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| | | <Role> http://exeloncorp.com/role/DisclosurePreferredSecuritiesTables </Role> |
| | | <ContainEmbeddedReports> false </ContainEmbeddedReports> |
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| | | <Role> http://exeloncorp.com/role/DisclosureEarningsPerShareAndEquityTables </Role> |
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| | | <ContainEmbeddedReports> false </ContainEmbeddedReports> |
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| | | <ContainEmbeddedReports> false </ContainEmbeddedReports> |
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| | | <ShortName> Quarterly Data (Tables) </ShortName> |
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| | | <LongName> 0601 - Disclosure - Significant Accounting Policies (Details) </LongName> |
| | | <ShortName> Significant Accounting Policies (Details) </ShortName> |
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