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American Tower Corp./MA – ‘10-K’ for 12/31/21 – ‘EX-101.SCH’

On:  Thursday, 2/24/22, at 5:52pm ET   ·   As of:  2/25/22   ·   For:  12/31/21   ·   Accession #:  1053507-22-17   ·   File #:  1-14195

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  As Of               Filer                 Filing    For·On·As Docs:Size

 2/25/22  American Tower Corp./MA           10-K       12/31/21  164:29M

Annual Report   —   Form 10-K

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   2.70M 
 2: EX-4.29     Instrument Defining the Rights of Security Holders  HTML    215K 
 3: EX-10.28    Material Contract                                   HTML     69K 
 4: EX-10.29    Material Contract                                   HTML    755K 
 5: EX-10.30    Material Contract                                   HTML    707K 
 6: EX-10.31    Material Contract                                   HTML    582K 
 7: EX-10.32    Material Contract                                   HTML    591K 
 8: EX-10.33    Material Contract                                   HTML    577K 
 9: EX-21       Subsidiaries List                                   HTML     97K 
10: EX-23       Consent of Expert or Counsel                        HTML     42K 
11: EX-31.1     Certification -- §302 - SOA'02                      HTML     47K 
12: EX-31.2     Certification -- §302 - SOA'02                      HTML     47K 
13: EX-32       Certification -- §906 - SOA'02                      HTML     46K 
19: R1          Cover                                               HTML    134K 
20: R2          Audit Information                                   HTML     47K 
21: R3          Consolidated Balance Sheets                         HTML    182K 
22: R4          Consolidated Balance Sheets (Parenthetical)         HTML     53K 
23: R5          Consolidated Statements of Operations               HTML    139K 
24: R6          Consolidated Statements of Operations               HTML     44K 
                (Parenthetical)                                                  
25: R7          Consolidated Statements of Comprehensive Income     HTML     80K 
26: R8          Consolidated Statements of Comprehensive Income     HTML     50K 
                (Parenthetical)                                                  
27: R9          Consolidated Statements of Equity                   HTML    140K 
28: R10         Consolidated Statements of Equity (Parenthetical)   HTML     47K 
29: R11         Consolidated Statements of Cash Flows               HTML    156K 
30: R12         Business and Summary of Significant Accounting      HTML    200K 
                Policies                                                         
31: R13         Prepaid and Other Current Assets                    HTML     52K 
32: R14         Property and Equipment                              HTML     79K 
33: R15         Leases                                              HTML    269K 
34: R16         Goodwill and Other Intangible Assets                HTML    107K 
35: R17         Acquisitions                                        HTML    124K 
36: R18         Accrued Expenses                                    HTML     56K 
37: R19         Long-Term Obligations                               HTML    358K 
38: R20         Other Non-Current Liabilities                       HTML     49K 
39: R21         Asset Retirement Obligations                        HTML     53K 
40: R22         Fair Value Measurements                             HTML     76K 
41: R23         Income Taxes                                        HTML    150K 
42: R24         Stock-Based Compensation                            HTML    108K 
43: R25         Redeemable Noncontrolling Interests                 HTML     80K 
44: R26         Equity                                              HTML     80K 
45: R27         Noncontrolling Interest                             HTML     80K 
46: R28         Other Operating Expenses                            HTML     66K 
47: R29         Earnings Per Common Share                           HTML     62K 
48: R30         Commitments and Contingencies                       HTML     53K 
49: R31         Supplemental Cash Flow Information                  HTML     58K 
50: R32         Business Segments                                   HTML    295K 
51: R33         Related Party Transactions                          HTML     45K 
52: R34         Subsequent Events                                   HTML     45K 
53: R35         Schedule III - SCHEDULE OF REAL ESTATE AND          HTML     99K 
                ACCUMULATED DEPRECIATION                                         
54: R36         Business and Summary of Significant Accounting      HTML    158K 
                Policies (Policies)                                              
55: R37         Business and Summary of Significant Accounting      HTML    153K 
                Policies (Tables)                                                
56: R38         Prepaid and Other Current Assets (Tables)           HTML     52K 
57: R39         Property and Equipment (Tables)                     HTML     79K 
58: R40         Leases (Tables)                                     HTML    128K 
59: R41         Goodwill and Other Intangible Assets (Tables)       HTML    110K 
60: R42         Acquisitions (Tables)                               HTML    112K 
61: R43         Accrued Expenses (Tables)                           HTML     56K 
62: R44         Long-Term Obligations (Tables)                      HTML    309K 
63: R45         Other Non-Current Liabilities (Tables)              HTML     49K 
64: R46         Asset Retirement Obligations (Tables)               HTML     52K 
65: R47         Fair Value Measurements (Tables)                    HTML     68K 
66: R48         Income Taxes (Tables)                               HTML    153K 
67: R49         Stock-Based Compensation (Tables)                   HTML    107K 
68: R50         Redeemable Noncontrolling Interests (Tables)        HTML     60K 
69: R51         Equity (Tables)                                     HTML     75K 
70: R52         Noncontrolling Interest (Tables)                    HTML     54K 
71: R53         Other Operating Expenses (Tables)                   HTML     66K 
72: R54         Earnings Per Common Share (Tables)                  HTML     64K 
73: R55         Supplemental Cash Flow Information (Tables)         HTML     57K 
74: R56         Business Segments (Tables)                          HTML    292K 
75: R57         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     52K 
                POLICIES - Principles of Consolidation (Details)                 
76: R58         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     46K 
                POLICIES - Segments (Details)                                    
77: R59         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     51K 
                POLICIES - Accounts Receivable and Deferred Rent                 
                Asset (Details)                                                  
78: R60         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     50K 
                POLICIES - Changes in Allowances (Details)                       
79: R61         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     49K 
                POLICIES - Net Foreign Currency Losses (Details)                 
80: R62         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     52K 
                POLICIES - Cash, Cash Equivalents, And Restricted                
                Cash (Details)                                                   
81: R63         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     48K 
                POLICIES - Property and Equipment (Details)                      
82: R64         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     47K 
                POLICIES - Goodwill and Other Intangible Assets                  
                (Details)                                                        
83: R65         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     49K 
                POLICIES - Other Comprehensive Income (Loss))                    
                (Details)                                                        
84: R66         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     50K 
                POLICIES - Revenue Narrative (Details)                           
85: R67         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     95K 
                POLICIES - Disaggregation of Revenue (Details)                   
86: R68         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     57K 
                POLICIES - Schedule of Non-lease Receivables                     
                Contract Assets and Liabilities From Contracts                   
                with Tenants (Details)                                           
87: R69         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     44K 
                POLICIES - Rent Expense (Details)                                
88: R70         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     62K 
                POLICIES - Stock-Based Compensation (Details)                    
89: R71         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     48K 
                POLICIES - Retirement Plan (Details)                             
90: R72         Prepaid and Other Current Assets (Details)          HTML     56K 
91: R73         PROPERTY AND EQUIPMENT- Summary of Property and     HTML     77K 
                Equipment (Details)                                              
92: R74         PROPERTY AND EQUIPMENT - Narrative (Details)        HTML     47K 
93: R75         PROPERTY AND EQUIPMENT - Schedule of Finance Lease  HTML     58K 
                Assets Included in Property Plant and Equipment                  
                (Details)                                                        
94: R76         LEASES - Narrative (Details)                        HTML     68K 
95: R77         LEASES - Future Minimum Rental Receipts Expected    HTML     57K 
                Under Operating Leases (Details)                                 
96: R78         LEASES - Information About Other Lease-related      HTML     60K 
                Balances (Details)                                               
97: R79         LEASES - Schedule Of Weighted Average Lease Terms   HTML     53K 
                And Discount Rates (Details)                                     
98: R80         LEASES - Lease Costs (Details)                      HTML     46K 
99: R81         LEASES - Supplemental Cash Flow Information         HTML     57K 
                (Details)                                                        
100: R82         LEASES -Maturities Of Operating And Finance Leases  HTML     91K  
                (Details)                                                        
101: R83         GOODWILL AND OTHER INTANGIBLE ASSETS - Changes In   HTML     81K  
                The Carrying Value Of Goodwill (Details)                         
102: R84         GOODWILL AND OTHER INTANGIBLE ASSETS - Other        HTML     81K  
                Intangible Assets Subject To Amortization                        
                (Details)                                                        
103: R85         GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative    HTML     49K  
                (Details)                                                        
104: R86         GOODWILL AND OTHER INTANGIBLE ASSETS - Expected     HTML     53K  
                Future Amortization Expenses (Details)                           
105: R87         ACQUISITIONS - Schedule of Merger and Acquisition   HTML     46K  
                Related Costs (Details)                                          
106: R88         ACQUISITIONS - Narrative (Details)                  HTML    189K  
107: R89         ACQUISITIONS - Schedule of Allocation of Purchase   HTML    189K  
                Price (Details)                                                  
108: R90         ACQUISITIONS - Pro Forma Information (Details)      HTML     53K  
109: R91         Accrued Expenses (Details)                          HTML     64K  
110: R92         LONG-TERM OBLIGATIONS - Schedule of Long-Term Debt  HTML    288K  
                Obligations (Details)                                            
111: R93         LONG-TERM OBLIGATIONS - Current Portion of          HTML    325K  
                Long-Term Obligations and Bank Facilities                        
                (Details)                                                        
112: R94         LONG-TERM OBLIGATIONS - Schedule of Credit          HTML     75K  
                Facilities And Term Loans (Details)                              
113: R95         LONG-TERM OBLIGATIONS - Senior Notes (Details)      HTML    150K  
114: R96         LONG-TERM OBLIGATIONS - Key Terms Related to        HTML    255K  
                Outstanding Senior Notes (Details)                               
115: R97         LONG-TERM OBLIGATIONS - Subsidiary Debt Narrative   HTML     98K  
                (Details)                                                        
116: R98         LONG-TERM OBLIGATIONS - Schedule of India           HTML     60K  
                Indebtedness (Details)                                           
117: R99         LONG-TERM OBLIGATIONS - Schedule of Other           HTML     70K  
                Subsidiary Debt (Details)                                        
118: R100        LONG-TERM OBLIGATIONS - InSite and CoreSite Debt    HTML     58K  
                Narrative (Details)                                              
119: R101        LONG-TERM OBLIGATIONS - Schedule of CoreSite Debt   HTML     62K  
                Key Terms (Details)                                              
120: R102        LONG-TERM OBLIGATIONS - Finance Lease Obligations   HTML     44K  
                Narrative (Details)                                              
121: R103        LONG-TERM OBLIGATIONS - Maturities of Long Term     HTML     68K  
                Debt (Details)                                                   
122: R104        Other Non-Current Liabilities (Details)             HTML     48K  
123: R105        ASSET RETIREMENT OBLIGATIONS - Schedule of          HTML     56K  
                Carrying Value Of Asset Retirement Obligations                   
                (Details)                                                        
124: R106        ASSET RETIREMENT OBLIGATIONS - Narrative (Details)  HTML     43K  
125: R107        FAIR VALUE MEASUREMENTS - Assets And Liabilities    HTML     71K  
                Measured At Fair Value On a Recurring Basis                      
                (Details)                                                        
126: R108        FAIR VALUE MEASUREMENTS - Narrative (Details)       HTML     95K  
127: R109        INCOME TAXES - Income Tax Provision From            HTML     64K  
                Continuing Operations (Details)                                  
128: R110        INCOME TAXES - Narrative (Details)                  HTML     75K  
129: R111        INCOME TAXES - Reconciliation Between The U.S.      HTML     62K  
                Statutory Rate And The Effective Rate From                       
                Continuing Operations (Details)                                  
130: R112        INCOME TAXES - Domestic and Foreign Components Of   HTML     52K  
                Income From Continuing Operations Before Income                  
                Taxes (Details)                                                  
131: R113        INCOME TAXES - Components Of The Net Deferred Tax   HTML     84K  
                Asset And Related Valuation Allowance (Details)                  
132: R114        INCOME TAXES - Valuation Allowance Activity         HTML     50K  
                (Details)                                                        
133: R115        INCOME TAXES - Net Operating Loss Carryforwards     HTML     61K  
                Expire (Details)                                                 
134: R116        INCOME TAXES - Reconciliation Of The Beginning And  HTML     63K  
                Ending Amount Of Unrecognized Tax Benefits                       
                (Details)                                                        
135: R117        STOCK-BASED COMPENSATION - Narrative (Details)      HTML    105K  
136: R118        STOCK-BASED COMPENSATION - Summary Of Stock-based   HTML     54K  
                Compensation Expenses (Details)                                  
137: R119        STOCK-BASED COMPENSATION - Summary Of The           HTML     97K  
                Company's Option Activity (Details)                              
138: R120        STOCK-BASED COMPENSATION - Schedule Of Options      HTML     80K  
                Outstanding (Details)                                            
139: R121        STOCK-BASED COMPENSATION - Summary Of Restricted    HTML    130K  
                Stock Activity (Details)                                         
140: R122        REDEEMABLE NONCONTROLLING INTERESTS - Narrative     HTML     87K  
                (Details)                                                        
141: R123        REDEEMABLE NONCONTROLLING INTERESTS - Changes In    HTML     60K  
                Redeemable Noncontrolling Interest (Details)                     
142: R124        EQUITY - Narrative (Details)                        HTML     81K  
143: R125        EQUITY - Distributions Declared (Detail)            HTML     64K  
144: R126        NONCONTROLLING INTEREST - Narrative (Details)       HTML     94K  
145: R127        NONCONTROLLING INTEREST - Schedule of Changes in    HTML     80K  
                Noncontrolling Interest (Details)                                
146: R128        OTHER OPERATING EXPENSES - Schedule of Other        HTML     54K  
                Operating Expenses (Details)                                     
147: R129        OTHER OPERATING EXPENSES - Impairment Charges       HTML     54K  
                (Details)                                                        
148: R130        EARNINGS PER COMMON SHARE - Schedule Of Earnings    HTML     68K  
                Per Basic And Diluted By Common Class (Details)                  
149: R131        EARNINGS PER COMMON SHARE - Schedule Of Shares      HTML     47K  
                Excluded From Computation Of Earnings Per Share                  
                (Details)                                                        
150: R132        Commitments and Contingencies (Details)             HTML     72K  
151: R133        Supplemental Cash Flow Information (Details)        HTML     61K  
152: R134        BUSINESS SEGMENTS - Narrative (Details)             HTML     44K  
153: R135        BUSINESS SEGMENTS - Summarized Segment Financial    HTML    144K  
                Information (Details)                                            
154: R136        BUSINESS SEGMENTS - Additional Information          HTML     71K  
                Relating to the Company's Operating Segments                     
                (Details)                                                        
155: R137        BUSINESS SEGMENTS - Summary of Geographic           HTML    128K  
                Information (Details)                                            
156: R138        BUSINESS SEGMENTS - Major Customers (Details)       HTML     53K  
157: R139        Subsequent Events (Details)                         HTML     61K  
158: R140        Schedule III - SCHEDULE OF REAL ESTATE AND          HTML     69K  
                ACCUMULATED DEPRECIATION - Schedule of Real Estate               
                and Accumulated Depreciation (Details)                           
159: R141        Schedule III - SCHEDULE OF REAL ESTATE AND          HTML     93K  
                ACCUMULATED DEPRECIATION - Activity of real Estate               
                and Accumulated Depreciation (Details)                           
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161: EXCEL       IDEA Workbook of Financial Reports                  XLSX    249K  
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164: ZIP         XBRL Zipped Folder -- 0001053507-22-000017-xbrl      Zip   1.52M  


‘EX-101.SCH’   —   XBRL Schema — amt-20211231


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
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<link:definition> 240544037 - Disclosure - LONG-TERM OBLIGATIONS - Current Portion of Long-Term Obligations and Bank Facilities (Details) </link:definition>
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<link:definition> 240554038 - Disclosure - LONG-TERM OBLIGATIONS - Schedule of Credit Facilities And Term Loans (Details) </link:definition>
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<link:definition> 240564039 - Disclosure - LONG-TERM OBLIGATIONS - Senior Notes (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240574040 - Disclosure - LONG-TERM OBLIGATIONS - Key Terms Related to Outstanding Senior Notes (Details) </link:definition>
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<link:definition> 240584041 - Disclosure - LONG-TERM OBLIGATIONS - Subsidiary Debt Narrative (Details) </link:definition>
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<link:definition> 240594042 - Disclosure - LONG-TERM OBLIGATIONS - Schedule of India Indebtedness (Details) </link:definition>
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<link:definition> 240604043 - Disclosure - LONG-TERM OBLIGATIONS - Schedule of Other Subsidiary Debt (Details) </link:definition>
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<link:definition> 240614044 - Disclosure - LONG-TERM OBLIGATIONS - InSite and CoreSite Debt Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240624045 - Disclosure - LONG-TERM OBLIGATIONS - Schedule of CoreSite Debt Key Terms (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240634046 - Disclosure - LONG-TERM OBLIGATIONS - Finance Lease Obligations Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240644047 - Disclosure - LONG-TERM OBLIGATIONS - Maturities of Long Term Debt (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 210651009 - Disclosure - OTHER NON-CURRENT LIABILITIES </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 230663009 - Disclosure - OTHER NON-CURRENT LIABILITIES (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="OTHERNONCURRENTLIABILITIESDetails" roleURI="http://www.americantower.com/role/OTHERNONCURRENTLIABILITIESDetails">
<link:definition> 240674048 - Disclosure - OTHER NON-CURRENT LIABILITIES (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 210681010 - Disclosure - ASSET RETIREMENT OBLIGATIONS </link:definition>
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<link:definition> 230693010 - Disclosure - ASSET RETIREMENT OBLIGATIONS (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="ASSETRETIREMENTOBLIGATIONSScheduleofCarryingValueOfAssetRetirementObligationsDetails" roleURI="http://www.americantower.com/role/ASSETRETIREMENTOBLIGATIONSScheduleofCarryingValueOfAssetRetirementObligationsDetails">
<link:definition> 240704049 - Disclosure - ASSET RETIREMENT OBLIGATIONS - Schedule of Carrying Value Of Asset Retirement Obligations (Details) </link:definition>
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<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 240714050 - Disclosure - ASSET RETIREMENT OBLIGATIONS - Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 210721011 - Disclosure - FAIR VALUE MEASUREMENTS </link:definition>
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<link:definition> 230733011 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="FAIRVALUEMEASUREMENTSAssetsAndLiabilitiesMeasuredAtFairValueOnaRecurringBasisDetails" roleURI="http://www.americantower.com/role/FAIRVALUEMEASUREMENTSAssetsAndLiabilitiesMeasuredAtFairValueOnaRecurringBasisDetails">
<link:definition> 240744051 - Disclosure - FAIR VALUE MEASUREMENTS - Assets And Liabilities Measured At Fair Value On a Recurring Basis (Details) </link:definition>
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<link:definition> 240754052 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 210761012 - Disclosure - INCOME TAXES </link:definition>
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<link:definition> 230773012 - Disclosure - INCOME TAXES (Tables) </link:definition>
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<link:definition> 240784053 - Disclosure - INCOME TAXES - Income Tax Provision From Continuing Operations (Details) </link:definition>
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<link:definition> 240794054 - Disclosure - INCOME TAXES - Narrative (Details) </link:definition>
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<link:definition> 240804055 - Disclosure - INCOME TAXES - Reconciliation Between The U.S. Statutory Rate And The Effective Rate From Continuing Operations (Details) </link:definition>
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<link:definition> 240814056 - Disclosure - INCOME TAXES - Domestic and Foreign Components Of Income From Continuing Operations Before Income Taxes (Details) </link:definition>
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<link:definition> 240824057 - Disclosure - INCOME TAXES - Components Of The Net Deferred Tax Asset And Related Valuation Allowance (Details) </link:definition>
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<link:definition> 240834058 - Disclosure - INCOME TAXES - Valuation Allowance Activity (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="INCOMETAXESNetOperatingLossCarryforwardsExpireDetails" roleURI="http://www.americantower.com/role/INCOMETAXESNetOperatingLossCarryforwardsExpireDetails">
<link:definition> 240844059 - Disclosure - INCOME TAXES - Net Operating Loss Carryforwards Expire (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 240854060 - Disclosure - INCOME TAXES - Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits (Details) </link:definition>
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<link:definition> 210861013 - Disclosure - STOCK-BASED COMPENSATION </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 230873013 - Disclosure - STOCK-BASED COMPENSATION (Tables) </link:definition>
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<link:roleType id="STOCKBASEDCOMPENSATIONNarrativeDetails" roleURI="http://www.americantower.com/role/STOCKBASEDCOMPENSATIONNarrativeDetails">
<link:definition> 240884061 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240894062 - Disclosure - STOCK-BASED COMPENSATION - Summary Of Stock-based Compensation Expenses (Details) </link:definition>
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<link:definition> 240904063 - Disclosure - STOCK-BASED COMPENSATION - Summary Of The Company's Option Activity (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240914064 - Disclosure - STOCK-BASED COMPENSATION - Schedule Of Options Outstanding (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240924065 - Disclosure - STOCK-BASED COMPENSATION - Summary Of Restricted Stock Activity (Details) </link:definition>
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<link:definition> 210931014 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS </link:definition>
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<link:definition> 230943014 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 240954066 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="REDEEMABLENONCONTROLLINGINTERESTSChangesInRedeemableNoncontrollingInterestDetails" roleURI="http://www.americantower.com/role/REDEEMABLENONCONTROLLINGINTERESTSChangesInRedeemableNoncontrollingInterestDetails">
<link:definition> 240964067 - Disclosure - REDEEMABLE NONCONTROLLING INTERESTS - Changes In Redeemable Noncontrolling Interest (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 210971015 - Disclosure - EQUITY </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 230983015 - Disclosure - EQUITY (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 240994068 - Disclosure - EQUITY - Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="EQUITYDistributionsDeclaredDetail" roleURI="http://www.americantower.com/role/EQUITYDistributionsDeclaredDetail">
<link:definition> 241004069 - Disclosure - EQUITY - Distributions Declared (Detail) </link:definition>
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<link:definition> 211011016 - Disclosure - NONCONTROLLING INTEREST </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 231023016 - Disclosure - NONCONTROLLING INTEREST (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 241034070 - Disclosure - NONCONTROLLING INTEREST - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 241044071 - Disclosure - NONCONTROLLING INTEREST - Schedule of Changes in Noncontrolling Interest (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 211051017 - Disclosure - OTHER OPERATING EXPENSES </link:definition>
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<xs:element id="amt_TowersMember" abstract="true" name="TowersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_RangeOneMember" abstract="true" name="RangeOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_DebtInstrumentCovenantTotalDebtToAdjustedEBITDARatioAfterAQualifiedAcquisition" abstract="false" name="DebtInstrumentCovenantTotalDebtToAdjustedEBITDARatioAfterAQualifiedAcquisition" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
<xs:element id="amt_BankOfAmericaNAAndBofASecuritiesIncMember" abstract="true" name="BankOfAmericaNAAndBofASecuritiesIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A350SeniorNotesDue2023Member" abstract="true" name="A350SeniorNotesDue2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_LossContingencyForeignIncomeTaxAssessment" abstract="false" name="LossContingencyForeignIncomeTaxAssessment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_EffectiveIncomeTaxRateReconciliationTaxReserves" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxReserves" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="amt_ScheduleofFinanceLeaseAssetsIncludedInPropertyPlantAndEquipmentTableTextBlock" abstract="false" name="ScheduleofFinanceLeaseAssetsIncludedInPropertyPlantAndEquipmentTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="amt_ComprehensiveIncomeLossNetOfTaxAttributableToNonredeemableNoncontrollingInterest" abstract="false" name="ComprehensiveIncomeLossNetOfTaxAttributableToNonredeemableNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest" abstract="false" name="AssetAcquisitionRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A1500SeniorNotesDue2028Member" abstract="true" name="A1500SeniorNotesDue2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2900SeniorNotesDue2030Member" abstract="true" name="A2900SeniorNotesDue2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_MaximumAdjustedEBITDA" abstract="false" name="MaximumAdjustedEBITDA" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
<xs:element id="amt_NonLeaseRevenueMember" abstract="true" name="NonLeaseRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_RedeemableNoncontrollingInterestIncreaseFromBusinessCombination" abstract="false" name="RedeemableNoncontrollingInterestIncreaseFromBusinessCombination" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_LesseeOperatingLeaseNumberOfRenewalOptions" abstract="false" name="LesseeOperatingLeaseNumberOfRenewalOptions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_NonCashOperatingAndFinancingLeaseModifications" abstract="false" name="NonCashOperatingAndFinancingLeaseModifications" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_Series20151ClassAMember" abstract="true" name="Series20151ClassAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_PropertyMember" abstract="true" name="PropertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_StraightLineRevenue" abstract="false" name="StraightLineRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_KirtonkholaTowerBangladeshLimitedMember" abstract="true" name="KirtonkholaTowerBangladeshLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A3800SeniorNotesDue2029Member" abstract="true" name="A3800SeniorNotesDue2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2021CreditFacilityMember" abstract="true" name="A2021CreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ScheduleofContractAssetsAndLiabilitiesFromContractsWithCustomersLineItems" abstract="true" name="ScheduleofContractAssetsAndLiabilitiesFromContractsWithCustomersLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="amt_AssetAcquisitionFiniteLivedIntangibleAssetsNet" abstract="false" name="AssetAcquisitionFiniteLivedIntangibleAssetsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_OtherOperatingExpenses" abstract="false" name="OtherOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A2021EUR364DayDelayedDrawTermLoanMember" abstract="true" name="A2021EUR364DayDelayedDrawTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2007PlanMember" abstract="true" name="A2007PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SharebasedCompensationArrangementBySharebasedPaymentAwardWeightedAverageGrantDateFairValueVestedAndDeferred" abstract="false" name="SharebasedCompensationArrangementBySharebasedPaymentAwardWeightedAverageGrantDateFairValueVestedAndDeferred" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
<xs:element id="amt_DebtInstrumentCovenantNumberofConsecutiveQuartersRequiredForReleaseofFunds" abstract="false" name="DebtInstrumentCovenantNumberofConsecutiveQuartersRequiredForReleaseofFunds" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_A3000SeniorNotesDue2023Member" abstract="true" name="A3000SeniorNotesDue2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ScheduleofImpairmentChargesTableTextBlock" abstract="false" name="ScheduleofImpairmentChargesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="amt_A2300SeniorNotesDue2031Member" abstract="true" name="A2300SeniorNotesDue2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_DebtInstrumentCovenantDefaultThreshold" abstract="false" name="DebtInstrumentCovenantDefaultThreshold" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A2021EURThreeYearDelayedDrawTermLoanMember" abstract="true" name="A2021EURThreeYearDelayedDrawTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_OperatingLeasesAbstract" abstract="true" name="OperatingLeasesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="amt_A2029SeniorNotesMember" abstract="true" name="A2029SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ViomTransactionMember" abstract="true" name="ViomTransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_PaidDividendRSU" abstract="false" name="PaidDividendRSU" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_LossGainOnInvestmentsAndOtherNonCashIncomeExpense" abstract="false" name="LossGainOnInvestmentsAndOtherNonCashIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_JointVentureBangladeshOperationsMember" abstract="true" name="JointVentureBangladeshOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsExpectedToVestNetOfForfeitures" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsExpectedToVestNetOfForfeitures" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
<xs:element id="amt_TelxiusEuropeanTowerDivisionMember" abstract="true" name="TelxiusEuropeanTowerDivisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_EntelAcquisitionMember" abstract="true" name="EntelAcquisitionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_UnrecognizedTaxBenefitsReductionResultingfromLapseofApplicableStatueofLimitationsandEffectiveSettlements" abstract="false" name="UnrecognizedTaxBenefitsReductionResultingfromLapseofApplicableStatueofLimitationsandEffectiveSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A1375SeniorNotesDue2025Member" abstract="true" name="A1375SeniorNotesDue2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_TaxTreatmentAxis" abstract="true" name="TaxTreatmentAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="amt_TowerAndNetworkLocationsMember" abstract="true" name="TowerAndNetworkLocationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SaleOfStockAuthorizedAmountToBeSold" abstract="false" name="SaleOfStockAuthorizedAmountToBeSold" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_ScheduleOfMergerAndAcquisitionRelatedCostsTableTextBlock" abstract="false" name="ScheduleOfMergerAndAcquisitionRelatedCostsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
<xs:element id="amt_AdjustmentsToAdditionalPaidInCapitalAdditionalInterestAcquisitionCosts" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalAdditionalInterestAcquisitionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_AssetsHeldAndUsedLongLivedFairValueDisclosure" abstract="false" name="AssetsHeldAndUsedLongLivedFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_TelxiusTelecomSAMember" abstract="true" name="TelxiusTelecomSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2020ATMProgramMember" abstract="true" name="A2020ATMProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ViomWorkingCapitalFacilitiesMember" abstract="true" name="ViomWorkingCapitalFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ForeignCurrencyTransactionGainLossReclassifiedAsAOCI" abstract="false" name="ForeignCurrencyTransactionGainLossReclassifiedAsAOCI" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_AssetAcquisitionOtherAssetsNonCurrent" abstract="false" name="AssetAcquisitionOtherAssetsNonCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_IncreaseDecreaseInRightOfUseAssetAndOperatingLeaseLiability" abstract="false" name="IncreaseDecreaseInRightOfUseAssetAndOperatingLeaseLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_DebtInstrumentCovenantThresholdForMajorityOfHoldersInEventOfDefault" abstract="false" name="DebtInstrumentCovenantThresholdForMajorityOfHoldersInEventOfDefault" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="amt_TelxiusLatinAmericaTowerDivisionMember" abstract="true" name="TelxiusLatinAmericaTowerDivisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_MinimumDebtServiceCreditRatio" abstract="false" name="MinimumDebtServiceCreditRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
<xs:element id="amt_TermLoan2021Member" abstract="true" name="TermLoan2021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_EstimatedUndiscountedFutureCashOutlayForAssetRetirementObligations" abstract="false" name="EstimatedUndiscountedFutureCashOutlayForAssetRetirementObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_NumberOfAnnualRenewalPeriods" abstract="false" name="NumberOfAnnualRenewalPeriods" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_DividendsDeclaredandPaidMember" abstract="true" name="DividendsDeclaredandPaidMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_EuroInterbankOfferedRateEURIBORMember" abstract="true" name="EuroInterbankOfferedRateEURIBORMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationAdditionsAbstract" abstract="true" name="SECSchedule1228RealEstateCompaniesInvestmentInRealEstateAccumulatedDepreciationAdditionsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="amt_NumberOfCustomers" abstract="false" name="NumberOfCustomers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_SubsidiariesOperatingInSpainMember" abstract="true" name="SubsidiariesOperatingInSpainMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet" abstract="false" name="AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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<xs:element id="amt_A0450SeniorNotesDue20270875SeniorNotesDue2029And1250SeniorNotesDue2033Member" abstract="true" name="A0450SeniorNotesDue20270875SeniorNotesDue2029And1250SeniorNotesDue2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A0400SeniorNotesDue2027Member" abstract="true" name="A0400SeniorNotesDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_EatonTowersHoldingLimitedMember" abstract="true" name="EatonTowersHoldingLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_RangeThreeMember" abstract="true" name="RangeThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2950SeniorNotesDue2051Member" abstract="true" name="A2950SeniorNotesDue2051Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsPreviouslyVestedAndDeferred" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsPreviouslyVestedAndDeferred" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
<xs:element id="amt_DeferredTaxLiabilityDepreciationAndAmortization" abstract="false" name="DeferredTaxLiabilityDepreciationAndAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A2011BuybackMember" abstract="true" name="A2011BuybackMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_CommunicationSitesMember" abstract="true" name="CommunicationSitesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_AssetAcquisitionPurchasePeriod" abstract="false" name="AssetAcquisitionPurchasePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="amt_NumberOfTrustSitesAssets" abstract="false" name="NumberOfTrustSitesAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_GhanaAndUgandaSubsidiariesMember" abstract="true" name="GhanaAndUgandaSubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_NoncontrollingInterestAcquiredOwnershipPercentageByNoncontrollingOwners" abstract="false" name="NoncontrollingInterestAcquiredOwnershipPercentageByNoncontrollingOwners" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="amt_A1950SeniorNotesDue2026Member" abstract="true" name="A1950SeniorNotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2020PSUsMember" abstract="true" name="A2020PSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_Acquisitions2021Member" abstract="true" name="Acquisitions2021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_BusinessCombinationContingentConsiderationLiabilityInstallmentPaymentPeriod" abstract="false" name="BusinessCombinationContingentConsiderationLiabilityInstallmentPaymentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="amt_A1450SeniorNotesDue20262300SeniorNotesDue2031And2950SeniorNotesDue2051Member" abstract="true" name="A1450SeniorNotesDue20262300SeniorNotesDue2031And2950SeniorNotesDue2051Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_MacquarieMember" abstract="true" name="MacquarieMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_LeasedAssetsNumberOfUnits" abstract="false" name="LeasedAssetsNumberOfUnits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_A0875SeniorNotesDue2029Member" abstract="true" name="A0875SeniorNotesDue2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_AccruedPassThroughCosts" abstract="false" name="AccruedPassThroughCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_NetOperatingLossCarryforwardsExpiringYearsSixteenThroughTwenty" abstract="false" name="NetOperatingLossCarryforwardsExpiringYearsSixteenThroughTwenty" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_KenyaDebtMember" abstract="true" name="KenyaDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ServicesRevenueMember" abstract="true" name="ServicesRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_FairValueOfDebtAssumedThroughAcquisitions" abstract="false" name="FairValueOfDebtAssumedThroughAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_USSubsidiaryDebtMember" abstract="true" name="USSubsidiaryDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_AcquisitionRelatedPayablesCurrent" abstract="false" name="AcquisitionRelatedPayablesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_SiteAcquiredNumberOfOperatingMarkets" abstract="false" name="SiteAcquiredNumberOfOperatingMarkets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_CashFlowLesseeAbstract" abstract="true" name="CashFlowLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
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<xs:element id="amt_AcquiredNetworkLocationMember" abstract="true" name="AcquiredNetworkLocationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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<xs:element id="amt_PropertyUSAndCanadaMember" abstract="true" name="PropertyUSAndCanadaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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<xs:element id="amt_NumberOfDataCenters" abstract="false" name="NumberOfDataCenters" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_A2018PSUsMember" abstract="true" name="A2018PSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_DebtInstrumentPaymentTermsRepaymentPeriod" abstract="false" name="DebtInstrumentPaymentTermsRepaymentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="amt_A2021USDTwoYearDelayedDrawTermLoanMember" abstract="true" name="A2021USDTwoYearDelayedDrawTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SECSchedule1228RealEstateCompaniesInvestmentInRealEstatePeriodDeductionsToCost" abstract="false" name="SECSchedule1228RealEstateCompaniesInvestmentInRealEstatePeriodDeductionsToCost" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_UnrecognizedTaxBenefitsDecreaseInIncomeTaxPenaltiesAndInterestExpenseResultingFromExpirationOfApplicableStatuteOfLimitations" abstract="false" name="UnrecognizedTaxBenefitsDecreaseInIncomeTaxPenaltiesAndInterestExpenseResultingFromExpirationOfApplicableStatuteOfLimitations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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<xs:element id="amt_A2950SeniorNotesDue2025Member" abstract="true" name="A2950SeniorNotesDue2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ProceedsFromSaleOfAvailableForSaleSecuritiesAndOtherProductiveAssets" abstract="false" name="ProceedsFromSaleOfAvailableForSaleSecuritiesAndOtherProductiveAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_DeferredTaxDeferredRentNoncurrent" abstract="false" name="DeferredTaxDeferredRentNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_VerizonWirelessMember" abstract="true" name="VerizonWirelessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateDiscretionaryGroundLeasePurchases" abstract="false" name="SECSchedule1228RealEstateCompaniesInvestmentInRealEstateDiscretionaryGroundLeasePurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAssumedInBusinessCombination" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAssumedInBusinessCombination" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
<xs:element id="amt_ForeignCurrencyTransactionGainLossInAOCIAndIncomeStatement" abstract="false" name="ForeignCurrencyTransactionGainLossInAOCIAndIncomeStatement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_NumberOfDASNetworks" abstract="false" name="NumberOfDASNetworks" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_NumberOfAssetsAcquired" abstract="false" name="NumberOfAssetsAcquired" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="amt_A3375SeniorNotesDue2024Member" abstract="true" name="A3375SeniorNotesDue2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SecuredTowerRevenueSecuritiesSeries20181AMember" abstract="true" name="SecuredTowerRevenueSecuritiesSeries20181AMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_BusinessCombinationProFormaInformationGrossMarginOfAcquireeSinceAcquisitionDateActual" abstract="false" name="BusinessCombinationProFormaInformationGrossMarginOfAcquireeSinceAcquisitionDateActual" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_CommonStockDividendsDeclaredPercentageofTotal" abstract="false" name="CommonStockDividendsDeclaredPercentageofTotal" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="amt_A2017BuybackMember" abstract="true" name="A2017BuybackMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2019PSUsMember" abstract="true" name="A2019PSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ATandTTransactionMember" abstract="true" name="ATandTTransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2021USDTwoYearDelayedDrawTermLoanAnd2021USD364DayDelayedDrawTermLoanMember" abstract="true" name="A2021USDTwoYearDelayedDrawTermLoanAnd2021USD364DayDelayedDrawTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2021TermLoansAndCreditFacilitiesMember" abstract="true" name="A2021TermLoansAndCreditFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_TaxTreatmentDomain" abstract="true" name="TaxTreatmentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_AllianzCapitalPartnersMember" abstract="true" name="AllianzCapitalPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_NonCashItemsAbstract" abstract="true" name="NonCashItemsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="amt_AcquiredOtherIntangibleAssetsMember" abstract="true" name="AcquiredOtherIntangibleAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_PaymentsForRepurchaseOfRedeemableNoncontrollingInterestInterest" abstract="false" name="PaymentsForRepurchaseOfRedeemableNoncontrollingInterestInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A355SeniorNotesDue2027Member" abstract="true" name="A355SeniorNotesDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_CommercialMortgagePassThroughCertificatesSeries2015Member" abstract="true" name="CommercialMortgagePassThroughCertificatesSeries2015Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A4000SeniorNotesDue2025Member" abstract="true" name="A4000SeniorNotesDue2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A2100SeniorNotesDue2030Member" abstract="true" name="A2100SeniorNotesDue2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateStartUpCapitalExpenditures" abstract="false" name="SECSchedule1228RealEstateCompaniesInvestmentInRealEstateStartUpCapitalExpenditures" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_EureEtLoirRseauxMobilesSASMember" abstract="true" name="EureEtLoirRseauxMobilesSASMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_SecuredTowerRevenueSecuritiesSeries20131AMember" abstract="true" name="SecuredTowerRevenueSecuritiesSeries20131AMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_PropertyEuropeMember" abstract="true" name="PropertyEuropeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_ValuationAllowanceDeferredTaxAssetIncreaseDecreaseRelatedToForeignCurrency" abstract="false" name="ValuationAllowanceDeferredTaxAssetIncreaseDecreaseRelatedToForeignCurrency" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_Originalprincipalamount" abstract="false" name="Originalprincipalamount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_CaisseDeDepotEtPlacementDuQuebecMember" abstract="true" name="CaisseDeDepotEtPlacementDuQuebecMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_DeferredTaxLiabilitiesRightofUseAsset" abstract="false" name="DeferredTaxLiabilitiesRightofUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="amt_A0450SeniorNotesDue2027Member" abstract="true" name="A0450SeniorNotesDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_A2027SeniorNotesMember" abstract="true" name="A2027SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_PropertyAsiaPacificMember" abstract="true" name="PropertyAsiaPacificMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_TermLoan2020Member" abstract="true" name="TermLoan2020Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="amt_TaxAdjustmentRelatedToReit" abstract="false" name="TaxAdjustmentRelatedToReit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
<xs:element id="amt_A1450SeniorNotesDue2026Member" abstract="true" name="A1450SeniorNotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>


17 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/05/24  American Tower Corp./MA           424B2                  2:812K                                   Donnelley … Solutions/FA
 3/04/24  American Tower Corp./MA           424B5                  1:791K                                   Donnelley … Solutions/FA
 2/27/24  American Tower Corp./MA           10-K       12/31/23  167:22M
 9/13/23  American Tower Corp./MA           424B2                  1:799K                                   Donnelley … Solutions/FA
 9/12/23  American Tower Corp./MA           424B5                  1:791K                                   Donnelley … Solutions/FA
 5/23/23  American Tower Corp./MA           424B2                  2:884K                                   Donnelley … Solutions/FA
 5/22/23  American Tower Corp./MA           424B5                  1:867K                                   Donnelley … Solutions/FA
 5/10/23  American Tower Corp./MA           424B2                  2:900K                                   Donnelley … Solutions/FA
 5/09/23  American Tower Corp./MA           424B5                  1:885K                                   Donnelley … Solutions/FA
 3/01/23  American Tower Corp./MA           424B2                  2:874K                                   Donnelley … Solutions/FA
 2/28/23  American Tower Corp./MA           424B5                  1:818K                                   Donnelley … Solutions/FA
 2/23/23  American Tower Corp./MA           10-K       12/31/22  155:23M
 6/03/22  American Tower Corp./MA           424B2                  2:831K                                   Donnelley … Solutions/FA
 6/02/22  American Tower Corp./MA           424B5                  1:811K                                   Donnelley … Solutions/FA
 6/01/22  American Tower Corp./MA           S-3ASR      6/01/22    9:1.7M                                   Donnelley … Solutions/FA
 3/30/22  American Tower Corp./MA           424B2                  2:910K                                   Donnelley … Solutions/FA
 3/29/22  American Tower Corp./MA           424B5                  1:883K                                   Donnelley … Solutions/FA


52 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

11/15/21  American Tower Corp./MA           8-K:1,7,8,911/14/21   13:953K                                   Donnelley … Solutions/FA
10/28/21  American Tower Corp./MA           10-Q        9/30/21  108:14M
10/05/21  American Tower Corp./MA           8-K:1,2,9  10/05/21   13:594K                                   Donnelley … Solutions/FA
 9/27/21  American Tower Corp./MA           8-K:1,2,9   9/27/21   13:568K                                   Donnelley … Solutions/FA
 7/29/21  American Tower Corp./MA           10-Q        6/30/21  105:13M
 5/21/21  American Tower Corp./MA           8-K:1,2,9   5/21/21   13:611K                                   Donnelley … Solutions/FA
 3/29/21  American Tower Corp./MA           8-K:1,2,9   3/29/21   13:545K                                   Donnelley … Solutions/FA
 3/03/21  American Tower Corp./MA           8-K:5       2/25/21   12:262K
 2/25/21  American Tower Corp./MA           10-K       12/31/20  166:30M
11/20/20  American Tower Corp./MA           8-K:1,2,9  11/20/20   13:596K                                   Donnelley … Solutions/FA
 9/28/20  American Tower Corp./MA           8-K:1,2,9   9/28/20   13:469K                                   Donnelley … Solutions/FA
 9/10/20  American Tower Corp./MA           8-K:1,2,8,9 9/10/20   14:549K                                   Donnelley … Solutions/FA
 6/03/20  American Tower Corp./MA           8-K:1,2,9   6/03/20   13:569K                                   Donnelley … Solutions/FA
 4/16/20  American Tower Corp./MA           8-K/A:5,9   3/12/20   12:259K                                   Donnelley … Solutions/FA
 2/25/20  American Tower Corp./MA           10-K       12/31/19  164:30M
 1/10/20  American Tower Corp./MA           8-K:1,2,9   1/10/20   13:515K                                   Donnelley … Solutions/FA
10/03/19  American Tower Corp./MA           8-K:1,2,9  10/03/19   13:483K                                   Donnelley … Solutions/FA
 6/13/19  American Tower Corp./MA           8-K:1,2,9   6/13/19    3:296K                                   Donnelley … Solutions/FA
 6/04/19  American Tower Corp./MA           S-3ASR      6/04/19   10:1.5M                                   Donnelley … Solutions/FA
 3/15/19  American Tower Corp./MA           8-K:1,2,9   3/15/19    3:299K                                   Donnelley … Solutions/FA
 2/27/19  American Tower Corp./MA           10-K       12/31/18  155:24M
 5/22/18  American Tower Corp./MA           8-K:1,2,9   5/22/18    3:271K                                   Donnelley … Solutions/FA
 5/02/18  American Tower Corp./MA           10-Q        3/31/18   96:11M
12/08/17  American Tower Corp./MA           8-K:1,2,9  12/08/17    3:284K                                   Donnelley … Solutions/FA
 6/30/17  American Tower Corp./MA           8-K:1,2,8,9 6/30/17    4:269K                                   Donnelley … Solutions/FA
 4/06/17  American Tower Corp./MA           8-K:1,2,9   4/06/17    3:268K                                   Donnelley … Solutions/FA
 3/14/17  American Tower Corp./MA           8-K:5,8,9   3/08/17    5:171K
 9/30/16  American Tower Corp./MA           8-K:1,2,9   9/30/16    3:374K                                   Donnelley … Solutions/FA
 5/13/16  American Tower Corp./MA           8-K:1,2,9   5/13/16    3:340K
 3/09/16  American Tower Corp./MA           8-K:8,9     3/09/16    4:164K
 2/16/16  American Tower Corp./MA           8-K:5,9     2/12/16    2:196K
 1/12/16  American Tower Corp./MA           8-K:1,2,9   1/12/16    3:287K                                   Donnelley … Solutions/FA
 7/29/15  American Tower Corp./MA           10-Q        6/30/15   93:12M                                    Donnelley … Solutions/FA
 5/07/15  American Tower Corp./MA           8-K:1,2,9   5/07/15    3:301K                                   Donnelley … Solutions/FA
 4/30/15  American Tower Corp./MA           10-Q        3/31/15   89:13M                                    Donnelley … Solutions/FA
 3/03/15  American Tower Corp./MA           8-K:1,3,5,9 2/25/15    5:790K                                   Donnelley … Solutions/FA
 2/24/15  American Tower Corp./MA           10-K       12/31/14  151:31M                                    Donnelley … Solutions/FA
 5/12/14  American Tower Corp./MA           8-K:1,3,5,9 5/06/14    3:405K                                   Donnelley … Solutions/FA
 8/19/13  American Tower Corp./MA           8-K:1,2,9   8/19/13    3:362K                                   Donnelley … Solutions/FA
 5/23/13  American Tower Corp./MA           S-3ASR      5/23/13    9:1.6M                                   Donnelley … Solutions/FA
 5/01/13  American Tower Corp./MA           10-Q        3/31/13   82:10M                                    Donnelley … Solutions/FA
 2/27/13  American Tower Corp./MA           10-K       12/31/12  134:20M                                    Donnelley … Solutions/FA
 1/08/13  American Tower Corp./MA           8-K:1,2,9   1/08/13    3:315K                                   Donnelley … Solutions/FA
 1/03/12  American Tower Corp./MA           8-K:1,2,3,512/30/11   14:976K                                   Donnelley … Solutions/FA
 8/25/11  American Tower Corp./MA           8-K:1,9     8/24/11    3:77K                                    Donnelley … Solutions/FA
 5/13/10  American Tower Corp./MA           S-3ASR      5/13/10    7:841K                                   Donnelley … Solutions/FA
 3/01/10  American Tower Corp./MA           10-K       12/31/09   49:4.6M                                   Donnelley … Solutions/FA
 5/08/09  American Tower Corp./MA           10-Q        3/31/09    5:681K                                   Donnelley … Solutions/FA
 3/05/09  American Tower Corp./MA           8-K:5,9     3/02/09    6:172K                                   Donnelley … Solutions/FA
 3/22/07  American Tower Corp./MA           DEF 14A     5/09/07    1:697K                                   Donnelley … Solutions/FA
 5/11/01  Spectrasite Inc.                  10-Q        3/31/01    7:559K                                   Bowne - DC/FA
 4/02/01  American Tower Corp./MA           10-K       12/31/00   11:1.5M                                   Donnelley Fin’l S… 07/FA
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Filing Submission 0001053507-22-000017   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

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