SEC Info - Southwestern Energy Co - ‘10-K’ for 12/31/19

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Southwestern Energy Co – ‘10-K’ for 12/31/19 – ‘EX-101.SCH’

On: Thursday, 2/27/20, at 4:45pm ET · For: 12/31/19 · Accession #: 7332-20-17 · File #: 1-08246

Previous ‘10-K’: ‘10-K’ on 2/28/19 for 12/31/18 · Next: ‘10-K’ on 3/1/21 for 12/31/20 · Latest: ‘10-K/A’ on 4/29/24 for 12/31/23 · 28 References:

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

 2/27/20  Southwestern Energy Co            10-K       12/31/19  154:40M

Annual Report — Form 10-K — Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Swn 2019 Form 10-K                                  HTML   3.92M 
 2: EX-4.1      EX-4.1 Description of Common Stock                  HTML     45K 
 3: EX-10.13    EX-10.13 Form of Performance Unit Award             HTML     70K 
 4: EX-10.21    EX-10.21 Form of Rsu Award for Officers             HTML     63K 
 5: EX-10.42    EX-10.42 Amendment #3 to Credit Agreement           HTML    119K 
 6: EX-10.43    EX-10.43 Amendment #4 to Credit Agreement           HTML    119K 
 7: EX-21.1     EX-21.1 List of Subsidiaries                        HTML     45K 
 8: EX-23.1     EX-23.1 Pwc Consent                                 HTML     45K 
 9: EX-23.2     EX-23.2 Nsai Consent                                HTML     46K 
14: EX-95.1     EX-95.1 Mine Safety Disclosure                      HTML     56K 
15: EX-99.1     EX-99.1 Nsai Audit Letter                           HTML     68K 
10: EX-31.1     EX-31.1 CEO 302 Certification                       HTML     49K 
11: EX-31.2     EX-31.2 CFO 302 Certification                       HTML     49K 
12: EX-32.1     EX-32.1 CEO 906 Certification                       HTML     46K 
13: EX-32.2     EX-32.2 CFO 906 Certification                       HTML     46K 
29: R1          Cover Page                                          HTML    107K 
117: R2          Consolidated Statements of Operations               HTML    162K  
132: R3          Consolidated Statements of Comprehensive Income     HTML     71K  
                (Loss)                                                           
84: R4          Consolidated Statements of Comprehensive Income     HTML     49K 
                (Loss) (Parenthetical)                                           
30: R5          Consolidated Balance Sheets                         HTML    146K 
119: R6          Consolidated Balance Sheets (Parenthetical)         HTML     56K  
134: R7          Consolidated Statements of Cash Flows               HTML    150K  
82: R8          Consolidated Statements of Changes in Equity        HTML    126K 
35: R9          Condensed Consolidated Statement of Changes in      HTML     45K 
                Equity (Parenthetical)                                           
122: R10         Organization and Summary of Significant Accounting  HTML    173K  
                Policies                                                         
107: R11         Restructuring Charges                               HTML     95K  
26: R12         Divestitures                                        HTML     54K 
77: R13         Leases                                              HTML     99K 
121: R14         Revenue Recognition                                 HTML    174K  
106: R15         Derivatives and Risk Management                     HTML    587K  
25: R16         Reclassifications from Accumulated Other            HTML     79K 
                Comprehensive Income (Loss)                                      
76: R17         Fair Value Measurements                             HTML    285K 
125: R18         Debt                                                HTML    133K  
104: R19         Commitments and Contingencies                       HTML     89K  
52: R20         Income Taxes                                        HTML    149K 
64: R21         Asset Retirement Obligations                        HTML     65K 
154: R22         Retirement and Employee Benefit Plans               HTML    392K  
100: R23         Stock-Based Compensation                            HTML    330K  
51: R24         Segment Information                                 HTML    178K 
63: R25         Condensed Consolidating Financial Information       HTML    994K 
153: R26         Subsequent Events                                   HTML     46K  
99: R27         Supplemental Quarterly Results                      HTML     93K 
48: R28         Supplemental Oil and Gas Disclosures                HTML    533K 
67: R29         Organization and Summary of Significant Accounting  HTML    136K 
                Policies (Policies)                                              
72: R30         Organization and Summary of Significant Accounting  HTML    126K 
                Policies (Tables)                                                
21: R31         Restructuring Charges (Tables)                      HTML     99K 
109: R32         Leases (Tables)                                     HTML     93K  
127: R33         Revenue Recognition (Tables)                        HTML    166K  
73: R34         Derivatives and Risk Management (Tables)            HTML    582K 
23: R35         Reclassifications from Accumulated Other            HTML     80K 
                Comprehensive Income (Loss) (Tables)                             
110: R36         Fair Value Measurements (Tables)                    HTML    275K  
128: R37         Debt (Tables)                                       HTML    116K  
71: R38         Commitments and Contingencies (Tables)              HTML     68K 
24: R39         Income Taxes (Tables)                               HTML    150K 
61: R40         Asset Retirement Obligations (Tables)               HTML     65K 
43: R41         Retirement and Employee Benefit Plans (Tables)      HTML    402K 
88: R42         Stock-Based Compensation (Tables)                   HTML    340K 
140: R43         Segment Information (Tables)                        HTML    178K  
62: R44         Condensed Consolidating Financial Information       HTML    992K 
                (Tables)                                                         
44: R45         Supplemental Quarterly Results (Tables)             HTML     92K 
89: R46         Supplemental Oil and Gas Disclosures (Tables)       HTML    543K 
141: R47         Organization and Summary of Significant Accounting  HTML    175K  
                Policies (Narrative) (Details)                                   
60: R48         Organization and Summary of Significant Accounting  HTML     53K 
                Policies (Summary of Cash and Cash Equivalents)                  
                (Details)                                                        
46: R49         Organization and Summary of Significant Accounting  HTML     94K 
                Policies (Schedule of Earnings Per Share)                        
                (Details)                                                        
38: R50         Organization and Summary of Significant Accounting  HTML     58K 
                Policies (Schedule of Antidilutive Securities                    
                Excluded from Computation of Earnings Per Share)                 
                (Details)                                                        
86: R51         Organization and Summary of Significant Accounting  HTML     51K 
                Policies (Schedule of Supplemental Disclosures of                
                Cash Flow Information) (Details)                                 
131: R52         Restructuring Charges (Narrative) (Details)         HTML     58K  
112: R53         Restructuring Charges (Summary of Restructuring     HTML     77K  
                Charges) (Details)                                               
37: R54         Restructuring Charges (Summary of Liabilities       HTML     54K 
                Associated with Restructuring Activities)                        
                (Details)                                                        
85: R55         Divestitures (Narrative) (Details)                  HTML    131K 
130: R56         Leases (Components of Lease Costs) (Details)        HTML     53K  
111: R57         Leases (Narrative) (Details)                        HTML     57K  
36: R58         Leases (Supplemental Information) (Details)         HTML     67K 
87: R59         Leases (Maturity Analysis) (Details)                HTML     86K 
144: R60         Revenue Recognition (Narrative) (Details)           HTML     66K  
94: R61         Revenue Recognition (Disaggregation of Revenue by   HTML    124K 
                Segment) (Details)                                               
41: R62         Revenue Recognition (Disaggregation of Revenue on   HTML     68K 
                Geographic Basis) (Details)                                      
58: R63         Revenue Recognition (Reconciliation of Accounts     HTML     51K 
                Receivable) (Details)                                            
143: R64         Derivatives and Risk Management (Narrative)         HTML     51K  
                (Details)                                                        
93: R65         Derivatives and Risk Management (Schedule of        HTML    163K 
                Derivative Instruments Notional Amount, Weighted                 
                Average Contract Prices and Fair Value) (Details)                
40: R66         Derivatives and Risk Management (Balance Sheet      HTML    122K 
                Classification of Derivative Financial                           
                Instruments) (Details)                                           
57: R67         Derivatives and Risk Management (Summary of Before  HTML     90K 
                Tax Effect of Cash Flow Hedges on Consolidated                   
                Financial Statements) (Details)                                  
146: R68         Reclassifications from Accumulated Other            HTML     70K  
                Comprehensive Income (Loss) (Components of                       
                Accumulated Other Comprehensive Income (Loss))                   
                (Details)                                                        
90: R69         Reclassifications from Accumulated Other            HTML     62K 
                Comprehensive Income (Loss) (Amounts Reclassified                
                from Accumulated Other Comprehensive Income                      
                (Loss)) (Details)                                                
114: R70         Fair Value Measurements (Narrative) (Details)       HTML     72K  
137: R71         Fair Value Measurements (Carrying Amount and        HTML     65K  
                Estimated Fair Values of Financial Instruments)                  
                (Details)                                                        
79: R72         Fair Value Measurements (Summary of Assets and      HTML    164K 
                Liabilities Measured at Fair Value on Recurring                  
                Basis) (Details)                                                 
32: R73         Fair Value Measurements (Reconciliations for        HTML     65K 
                Change in Net Fair Value of Derivative Assets and                
                Liabilities Measured at Fair Value on a Recurring                
                Basis Using Significant Unobservable Inputs (Level               
                3)) (Details)                                                    
115: R74         Debt (Components of Debt) (Details)                 HTML    105K  
138: R75         Debt (Schedule of Debt Maturities) (Details)        HTML     65K  
80: R76         Debt (2016 Credit Facility - Narrative) (Details)   HTML     75K 
33: R77         Debt (2018 Revolving Credit Facility - Narrative)   HTML     86K 
                (Details)                                                        
120: R78         Debt (Senior Notes - Narrative) (Details)           HTML     99K  
135: R79         Commitments and Contingencies (Narrative)           HTML    116K  
                (Details)                                                        
113: R80         Commitments and Contingencies (Schedule of Future   HTML     63K  
                Obligation under Transportation Agreements)                      
                (Details)                                                        
136: R81         Income Taxes (Narrative) (Details)                  HTML     84K  
78: R82         Income Taxes (Provision (Benefit) for Income        HTML     68K 
                Taxes) (Details)                                                 
31: R83         Income Taxes (Reconciliation of Provision for       HTML     73K 
                Income Taxes) (Details)                                          
116: R84         Income Taxes (Components of Deferred Tax Balances)  HTML     86K  
                (Details)                                                        
139: R85         Income Taxes (Reconciliation of Changes to the      HTML     48K  
                Valuation Allowance) (Details)                                   
81: R86         Income Taxes (Reconciliation of Beginning and       HTML     54K 
                Ending Balances of Unrecognized Tax Benefits)                    
                (Details)                                                        
34: R87         Asset Retirement Obligations (Schedule of Asset     HTML     67K 
                Retirement Obligations) (Details)                                
118: R88         Retirement and Employee Benefit Plans (Narrative)   HTML     85K  
                (Details)                                                        
133: R89         Retirement and Employee Benefit Plans (Changes in   HTML    104K  
                Plans Benefit Obligations, Fair Value of Assets,                 
                and Funded Status) (Details)                                     
145: R90         Retirement and Employee Benefit Plans (Projected    HTML     53K  
                Benefit Obligation, Accumulated Benefit Obligation               
                and Fair Value of Plan Assets) (Details)                         
95: R91         Retirement and Employee Benefit Plans (Pension and  HTML     81K 
                Other Postretirement Benefit Costs) (Details)                    
42: R92         Retirement and Employee Benefit Plans (Amounts      HTML     76K 
                Recognized in Other Comprehensive Income)                        
                (Details)                                                        
59: R93         Retirement and Employee Benefit Plans (Schedule of  HTML     53K 
                Assumptions Used - Benefit Obligations) (Details)                
142: R94         Retirement and Employee Benefit Plans (Schedule of  HTML     56K  
                Assumptions Used - Net Periodic Benefit Cost)                    
                (Details)                                                        
92: R95         Retirement and Employee Benefit Plans (Schedule of  HTML     50K 
                Health Care Cost Trend Rates) (Details)                          
39: R96         Retirement and Employee Benefit Plans (One          HTML     53K 
                Percentage Point Change in Assumed Health Care                   
                Cost Trend Rates) (Details)                                      
56: R97         Retirement and Employee Benefit Plans (Schedule of  HTML     62K 
                Expected Benefit Payments) (Details)                             
147: R98         Retirement and Employee Benefit Plans (Schedule of  HTML     59K  
                Allocation of Plan Assets) (Details)                             
91: R99         Retirement and Employee Benefit Plans (Fair Value   HTML    111K 
                Measurement of Pension Plan Assets) (Details)                    
149: R100        Stock-Based Compensation (Narrative) (Details)      HTML    105K  
98: R101        Stock-Based Compensation (Schedule of               HTML     51K 
                Equity-Classified Stock Option Stock-Based                       
                Compensation Costs) (Details)                                    
55: R102        Stock-Based Compensation (Schedule of               HTML     56K 
                Equity-Classified Valuation Assumptions) (Details)               
70: R103        Stock-Based Compensation (Summary of                HTML     69K 
                Equity-Classified Stock Option Activity) (Details)               
148: R104        Stock-Based Compensation (Summary of                HTML     91K  
                Equity-Classified Stock Options Outstanding and                  
                Options Exercisable) (Details)                                   
97: R105        Stock-Based Compensation (Schedule of               HTML     51K 
                Equity-Classified Restricted Stock Stock-Based                   
                Compensation Costs) (Details)                                    
54: R106        Stock-Based Compensation (Summary of                HTML     73K 
                Equity-Classified Restricted Stock Activity)                     
                (Details)                                                        
69: R107        Stock-Based Compensation (Schedule of               HTML     51K 
                Equity-Classified Performance Units Stock-Based                  
                Compensation Costs) (Details)                                    
150: R108        Stock-Based Compensation (Summary of                HTML     78K  
                Equity-Classified Performance Units Activity)                    
                (Details)                                                        
96: R109        Stock-Based Compensation (Schedule of               HTML     49K 
                Liability-Classified Restricted Stock Units                      
                Stock-Based Compensation Costs) (Details)                        
103: R110        Stock-Based Compensation (Summary of                HTML     68K  
                Liability-Classified Restricted Stock Unit                       
                Activity) (Details)                                              
124: R111        Stock-Based Compensation (Schedule of               HTML     49K  
                Liability-Classified Performance Units Stock-Based               
                Compensation Costs) (Details)                                    
74: R112        Stock-Based Compensation (Summary of                HTML     68K 
                Liability-Classified Performance Unit Activity)                  
                (Details)                                                        
27: R113        Segment Information (Details)                       HTML    180K 
105: R114        Condensed Consolidating Financial Information       HTML     45K  
                (Narrative) (Details)                                            
126: R115        Condensed Consolidating Financial Information       HTML    291K  
                (Condensed Consolidating Statement of Operations)                
                (Details)                                                        
75: R116        Condensed Consolidating Financial Information       HTML    184K 
                (Condensed Consolidating Balance Sheets) (Details)               
28: R117        Condensed Consolidating Financial Information       HTML    149K 
                (Condensed Consolidating Statements of Cash Flows)               
                (Details)                                                        
108: R118        Subsequent Events (Details)                         HTML     50K  
123: R119        Supplemental Quarterly Results (Schedule of         HTML     65K  
                Quarterly Financial Inform) (Details)                            
66: R120        Supplemental Oil and Gas Disclosures (Narrative)    HTML     78K 
                (Details)                                                        
47: R121        Supplemental Oil and Gas Disclosures (Capitalized   HTML     56K 
                Costs Relating to Oil and Gas Producing Activities               
                Disclosure) (Details)                                            
101: R122        Supplemental Oil and Gas Disclosures (Composition   HTML     65K  
                of Net Unevaluated Costs Excluded from                           
                Amortization) (Details)                                          
151: R123        Supplemental Oil and Gas Disclosures (Cost          HTML     56K  
                Incurred in Oil and Gas Property Acquisition,                    
                Exploration, and Development Activities                          
                Disclosure) (Details)                                            
68: R124        Supplemental Oil and Gas Disclosures (Results of    HTML     62K 
                Operations for Oil and Gas Producing Activities                  
                Disclosure) (Details)                                            
49: R125        Supplemental Oil and Gas Disclosures (Summary of    HTML    136K 
                Changes in Reserves - United States) (Details)                   
102: R126        Supplemental Oil and Gas Disclosures (Summary of    HTML    105K  
                Changes in Reserves) (Details)                                   
152: R127        Supplemental Oil and Gas Disclosures (Standardized  HTML     68K  
                Measure of Discounted Future Cash Flows Relating                 
                to Proved Reserves Disclosure) (Details)                         
65: R128        Supplemental Oil and Gas Disclosures (Schedule of   HTML     52K 
                Prices Used for Standardized Measure of Discounted               
                Future Cash Flows Relating to Proved Reserves                    
                Disclosure) (Details)                                            
53: R129        Supplemental Oil and Gas Disclosures (Schedule of   HTML     83K 
                Analysis of Changes in Standardized Measure)                     
                (Details)                                                        
83: XML         IDEA XML File -- Filing Summary                      XML    302K 
45: XML         XBRL Instance -- swn-20191231_htm                    XML  12.91M 
50: EXCEL       IDEA Workbook of Financial Reports                  XLSX    209K 
17: EX-101.CAL  XBRL Calculations -- swn-20191231_cal                XML    471K 
18: EX-101.DEF  XBRL Definitions -- swn-20191231_def                 XML   1.91M 
19: EX-101.LAB  XBRL Labels -- swn-20191231_lab                      XML   3.25M 
20: EX-101.PRE  XBRL Presentations -- swn-20191231_pre               XML   2.48M 
16: EX-101.SCH  XBRL Schema -- swn-20191231                          XSD    358K 
22: JSON        XBRL Instance as JSON Data -- MetaLinks              673±  1.09M 
129: ZIP         XBRL Zipped Folder -- 0000007332-20-000017-xbrl      Zip   1.08M

‘EX-101.SCH’ — XBRL Schema — swn-20191231

This Exhibit is an XBRL XML File.

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<xs:element id="swn_CapitalizedInternalCostsRelatedToAcquisitionsExplorationAndDevelopment" abstract="false" name="CapitalizedInternalCostsRelatedToAcquisitionsExplorationAndDevelopment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_DerivativeBasisDifferentialperMillionBritishThermalUnit" abstract="false" name="DerivativeBasisDifferentialperMillionBritishThermalUnit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>

<xs:element id="swn_NaturalGasAndOilPropertiesLineItems" abstract="true" name="NaturalGasAndOilPropertiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_ScheduleOfLiabilityBasedShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" abstract="false" name="ScheduleOfLiabilityBasedShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>

<xs:element id="swn_LesseeOperatingLeaseNotYetCommenced" abstract="false" name="LesseeOperatingLeaseNotYetCommenced" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_LiabilityBasedRestrictedStockShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognized" abstract="false" name="LiabilityBasedRestrictedStockShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognized" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_OutstandingChecksIncludedInAccountsPayable" abstract="false" name="OutstandingChecksIncludedInAccountsPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_ProvedDevelopedReservesAdditionsEnergy" abstract="false" name="ProvedDevelopedReservesAdditionsEnergy" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:energyItemType"/>

<xs:element id="swn_DerivativeAssetsMember" abstract="false" name="DerivativeAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_OilAndGasExplorationAndProductionIndustriesDisclosuresLineItems" abstract="true" name="OilAndGasExplorationAndProductionIndustriesDisclosuresLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_OfficeSpaceVehiclesAndEquipmentMember" abstract="true" name="OfficeSpaceVehiclesAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergyAbstract" abstract="true" name="ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergyAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_A2016CreditAgreementMember" abstract="true" name="A2016CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_DeferredTaxAssetValuationAllowanceRollForward" abstract="true" name="DeferredTaxAssetValuationAllowanceRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_OtherCommitmentDueInLessThanTwelveMonths" abstract="false" name="OtherCommitmentDueInLessThanTwelveMonths" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_LiabilitiesLesseeAbstract" abstract="true" name="LiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_TwoWayCostlessCollarsTwoMember" abstract="false" name="TwoWayCostlessCollarsTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_CapitalizedInterestOfNetUnevaluatedCostsExcludedFromAmortizationCumulative" abstract="false" name="CapitalizedInterestOfNetUnevaluatedCostsExcludedFromAmortizationCumulative" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_ReconciliationOfAccountsReceivableTableTextBlock" abstract="false" name="ReconciliationOfAccountsReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>

<xs:element id="swn_FixedPriceSwapsMember" abstract="false" name="FixedPriceSwapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_AggregateAnnualLeasePayment" abstract="false" name="AggregateAnnualLeasePayment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_ThreeWayCostlessCollarsMember" abstract="false" name="ThreeWayCostlessCollarsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_RateToWhichCostTrendIsAssumedToDecline" abstract="false" name="RateToWhichCostTrendIsAssumedToDecline" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>

<xs:element id="swn_DefinedBenefitPlanEquitySecuritiesUSLargeCapValueMember" abstract="true" name="DefinedBenefitPlanEquitySecuritiesUSLargeCapValueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_LeverageRatioAmountOfCreditLimit" abstract="false" name="LeverageRatioAmountOfCreditLimit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_DerivativeOneMember" abstract="false" name="DerivativeOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ProvedDevelopedAndUndevelopedReservesOtherThanPriceRevisionsEnergy" abstract="false" name="ProvedDevelopedAndUndevelopedReservesOtherThanPriceRevisionsEnergy" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:energyItemType"/>

<xs:element id="swn_CommitmentsAndContingenciesLineItems" abstract="true" name="CommitmentsAndContingenciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_FixedPriceSwapsOneMember" abstract="false" name="FixedPriceSwapsOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ScheduleOfShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" abstract="true" name="ScheduleOfShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>

<xs:element id="swn_NegativeCarryingAmountOfSubsidiariesNet" abstract="false" name="NegativeCarryingAmountOfSubsidiariesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_NaturalGasLiquidsSalesMember" abstract="false" name="NaturalGasLiquidsSalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_MinimumCurrentRatio" abstract="false" name="MinimumCurrentRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>

<xs:element id="swn_ExplorationAndDevelopmentCosts" abstract="false" name="ExplorationAndDevelopmentCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_RangeOfExercisePricesTwoMember" abstract="false" name="RangeOfExercisePricesTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergyAbstract" abstract="true" name="ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergyAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_AllocatedShareBasedCompensationExpenseLiabilityBased" abstract="false" name="AllocatedShareBasedCompensationExpenseLiabilityBased" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceDueToTaxReformAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowanceDueToTaxReformAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_DebtInstrumentCovenantCompliancePeriodOfComplianceDomain" abstract="true" name="DebtInstrumentCovenantCompliancePeriodOfComplianceDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ProvedDevelopedAndUndevelopedReservesOtherThanPriceRevisions" abstract="false" name="ProvedDevelopedAndUndevelopedReservesOtherThanPriceRevisions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:volumeItemType"/>

<xs:element id="swn_DefinedBenefitPlanEquitySecuritiesUSLargeCapGrowthMember" abstract="true" name="DefinedBenefitPlanEquitySecuritiesUSLargeCapGrowthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_StatutoryDepletionCarryforwardMember" abstract="true" name="StatutoryDepletionCarryforwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_OtherCommitmentAssumedByBuyer" abstract="false" name="OtherCommitmentAssumedByBuyer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_RightOfUseAssetObtainedInExchangeForLeaseLiabilityAbstract" abstract="true" name="RightOfUseAssetObtainedInExchangeForLeaseLiabilityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_FullCostPoolAmortizationPerMcfe" abstract="false" name="FullCostPoolAmortizationPerMcfe" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>

<xs:element id="swn_ScheduleOfLiabilityBasedShareBasedCompensationAllocationOfRecognizedPeriodCostsTableTextBlock" abstract="false" name="ScheduleOfLiabilityBasedShareBasedCompensationAllocationOfRecognizedPeriodCostsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>

<xs:element id="swn_InfrastructureCurrentlyInServiceMember" abstract="false" name="InfrastructureCurrentlyInServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ShareBasedCompensationArrangementIncreaseDecreaseInDeferredTaxAsset" abstract="false" name="ShareBasedCompensationArrangementIncreaseDecreaseInDeferredTaxAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_DisposalGroupIncludingDiscontinuedOperationAdjustmentDueToDifferencesFromEconomicEffectiveDateToCloseDate" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAdjustmentDueToDifferencesFromEconomicEffectiveDateToCloseDate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_DurationAverageQuotedPriceIncludingImpactOfDerivativesCalculateCeilingValueOfReserves" abstract="false" name="DurationAverageQuotedPriceIncludingImpactOfDerivativesCalculateCeilingValueOfReserves" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>

<xs:element id="swn_ProvedDevelopedReservesAbstract" abstract="true" name="ProvedDevelopedReservesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_OtherCommitmentDueAfterEighthYear" abstract="false" name="OtherCommitmentDueAfterEighthYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:perShareItemType"/>

<xs:element id="swn_UndevelopedPropertiesSouthwestAppalachiaMember" abstract="false" name="UndevelopedPropertiesSouthwestAppalachiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_PropaneMember" abstract="false" name="PropaneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_AssetRetirementObligationsTable" abstract="true" name="AssetRetirementObligationsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>

<xs:element id="swn_June302018ThroughMarch312019Member" abstract="true" name="June302018ThroughMarch312019Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_CapitalizedInterestOfNetUnevaluatedCostsExcludedFromAmortization" abstract="false" name="CapitalizedInterestOfNetUnevaluatedCostsExcludedFromAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_ProvedDevelopedAndUndevelopedReservesPerformanceAndProductionRevisionsEnergy" abstract="false" name="ProvedDevelopedAndUndevelopedReservesPerformanceAndProductionRevisionsEnergy" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:energyItemType"/>

<xs:element id="swn_OtherComprehensiveIncomeLossDefinedBenefitPlanSettlementGainLossBeforeTax" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanSettlementGainLossBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_EffectiveIncomeTaxRateReconciliationChangeInUncertainTaxPositions" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeInUncertainTaxPositions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_OtherCommitmentPotentialAmountToBeReimbursedToBuyer" abstract="false" name="OtherCommitmentPotentialAmountToBeReimbursedToBuyer" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_MarketingReportableSegmentMember" abstract="false" name="MarketingReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_OtherNonCoreAssetsMember" abstract="false" name="OtherNonCoreAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_LiabilityBasedShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" abstract="false" name="LiabilityBasedShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_RegulatoryApprovalAndOrConstructionSubsequentlyCancelledMember" abstract="true" name="RegulatoryApprovalAndOrConstructionSubsequentlyCancelledMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_UndevelopedPropertiesNortheastAppalachiaMember" abstract="false" name="UndevelopedPropertiesNortheastAppalachiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_NaturalGasOilAndNGLMember" abstract="true" name="NaturalGasOilAndNGLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ThreeWayCostlessCollarsTwoMember" abstract="false" name="ThreeWayCostlessCollarsTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_DerivativeGainLossOnDerivativeUnsettledNet" abstract="false" name="DerivativeGainLossOnDerivativeUnsettledNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_DebtInstrumentCovenantComplianceLimitOfSecuringIndebtednessPercentOfConsolidatedNetTangibleAssets" abstract="false" name="DebtInstrumentCovenantComplianceLimitOfSecuringIndebtednessPercentOfConsolidatedNetTangibleAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>

<xs:element id="swn_DerivativeTwoMember" abstract="false" name="DerivativeTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsForfeitedInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsForfeitedInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>

<xs:element id="swn_PendingRegulatoryApprovalAndOrConstructionMember" abstract="false" name="PendingRegulatoryApprovalAndOrConstructionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ScheduleOfChangeInValuationAllowanceTableTextBlock" abstract="false" name="ScheduleOfChangeInValuationAllowanceTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>

<xs:element id="swn_A2018TermLoanFacilityDueApril2023Member" abstract="true" name="A2018TermLoanFacilityDueApril2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ProvedUndevelopedReservesAbstract" abstract="true" name="ProvedUndevelopedReservesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>

<xs:element id="swn_PercentageOfPresentWorthOfProvedReserves" abstract="false" name="PercentageOfPresentWorthOfProvedReserves" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>

<xs:element id="swn_ScheduleOfPricesUsedForStandardizedMeasureOfDiscountedFutureCashFlowsRelatingToProvedReservesDisclosureTableTextBlock" abstract="false" name="ScheduleOfPricesUsedForStandardizedMeasureOfDiscountedFutureCashFlowsRelatingToProvedReservesDisclosureTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>

<xs:element id="swn_AssetRetirementAccretionOfDiscount" abstract="false" name="AssetRetirementAccretionOfDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_NonCoreGatheringAssetsMember" abstract="true" name="NonCoreGatheringAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_OilAndGasExplorationAndProductionIndustriesDisclosuresTable" abstract="true" name="OilAndGasExplorationAndProductionIndustriesDisclosuresTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>

<xs:element id="swn_LiabilityBasedPerformanceUnitsShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedPeriodForRecognition" abstract="false" name="LiabilityBasedPerformanceUnitsShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedPeriodForRecognition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>

<xs:element id="swn_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsForfeituresInPeriodWeightedAverageFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsForfeituresInPeriodWeightedAverageFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:perShareItemType"/>

<xs:element id="swn_AssetDivestituresMember" abstract="false" name="AssetDivestituresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ArkansasRoyaltyLitigationMember" abstract="false" name="ArkansasRoyaltyLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_DerivativeGainLossOnDerivativeSettledNet" abstract="false" name="DerivativeGainLossOnDerivativeSettledNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_TreasuryStockPolicyTextBlock" abstract="false" name="TreasuryStockPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>

<xs:element id="swn_OtherMember" abstract="false" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsNonvestedNumber" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityInstrumentsOtherThanOptionsNonvestedNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>

<xs:element id="swn_TaxCreditCarryforwardsAlternativeMinimumTaxExpectedRefunds" abstract="false" name="TaxCreditCarryforwardsAlternativeMinimumTaxExpectedRefunds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_AppalachianBasinMember" abstract="true" name="AppalachianBasinMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_RevenuePerformanceObligationPaymentTerms" abstract="false" name="RevenuePerformanceObligationPaymentTerms" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>

<xs:element id="swn_ProvedUndevelopedReservesAdditionsEnergy" abstract="false" name="ProvedUndevelopedReservesAdditionsEnergy" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:energyItemType"/>

<xs:element id="swn_BasisSwapOneMember" abstract="false" name="BasisSwapOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_GasGatheringMember" abstract="false" name="GasGatheringMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>

<xs:element id="swn_SeverenceCostsIncludingPayrollTaxes" abstract="false" name="SeverenceCostsIncludingPayrollTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

<xs:element id="swn_IntercompanyActivities" abstract="false" name="IntercompanyActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>

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