New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Interest

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

+ References

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- Definition

Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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- Definition

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
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- Definition

Amount of the effect of a change in accounting principle on net income.

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- Definition

Amount of each individual error being corrected in the correcting adjustment.

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Significant Accounting Policies - Narrative (Details) - USD ($)		3 Months Ended			6 Months Ended
	Mar. 31, 2016	Jun. 30, 2016	Mar. 23, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jan. 01, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Cash Provided by (Used in) Financing Activities					$ 1,469,000,000	$ 3,713,000,000
Net Cash Provided by (Used in) Operating Activities					4,553,000,000	3,969,000,000
Pepco Holdings LLC [Member] \| Predecessor [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Interest				$ 1,000,000		1,000,000
Net Cash Provided by (Used in) Financing Activities			$ 372,000,000			233,000,000
Net Cash Provided by (Used in) Operating Activities			$ 264,000,000			339,000,000
Pepco Holdings LLC [Member] \| Successor [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Quantifying Misstatement in Current Year Financial Statements, Amount	$ 46,000,000
Net Cash Provided by (Used in) Financing Activities	135,000,000	$ 137,000,000
Net Cash Provided by (Used in) Operating Activities	$ 3,000,000	$ 188,000,000
Delmarva Power and Light Company [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Interest				1,000,000
Net Cash Provided by (Used in) Financing Activities					(30,000,000)	35,000,000
Net Cash Provided by (Used in) Operating Activities					220,000,000	115,000,000
Atlantic City Electric Company [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Interest						1,000,000
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets							$ 12,000,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income				4,000,000		1,000,000
Net Cash Provided by (Used in) Financing Activities					100,000,000	58,000,000
Net Cash Provided by (Used in) Operating Activities					208,000,000	83,000,000
Potomac Electric Power Company [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Interest				$ 1,000,000		1,000,000
Net Cash Provided by (Used in) Financing Activities					64,000,000	159,000,000
Net Cash Provided by (Used in) Operating Activities					$ 365,000,000	$ 105,000,000