Discontinued Operations and Disposal Groups (Details) - Cash Flows - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Discontinued Operations - Income Statement
Depreciation, Amortization and Accretion, Net	$ 2,679	$ 6,204
Asset Impairment Charges	46
Gain (Loss) on Sale of Assets and Asset Impairment Charges	(8)	(147)
Deferred income taxes and amortization of investment tax credits	256	(45)
Net fair value changes related to derivatives	(59)	(1,244)
Net realized and unrealized (gains) losses on NDT funds	205	(383)
Net unrealized (gains) losses on equity investments	16	83
Other non-cash operating activities	(265)	293
Payments to Acquire Property, Plant, and Equipment	(5,179)	(5,970)
Collection of deferred purchase price	169	3,052
Decrease in capital expenditures not paid	(147)	(334)
Increase in deferred purchase price	348	2,933
Increase in PPE related to ARO update	331	574
Exelon Generation Co L L C [Member]
Discontinued Operations - Income Statement
Depreciation, Amortization and Accretion, Net	207	3,951
Asset Impairment Charges	0	537
Gain (Loss) on Sale of Assets and Asset Impairment Charges	9	(144)
Deferred income taxes and amortization of investment tax credits	(143)	(242)
Net fair value changes related to derivatives	(59)	(1,244)
Net realized and unrealized (gains) losses on NDT funds	205	(383)
Net unrealized (gains) losses on equity investments	16	83
Other non-cash operating activities	36	(810)
Payments to Acquire Property, Plant, and Equipment	(227)	(1,098)
Collection of deferred purchase price	169	3,052
Decrease in capital expenditures not paid	(128)	(77)
Increase in deferred purchase price	348	2,933
Increase in PPE related to ARO update	$ 335	$ 550

The non cash impact of change in capital expenditures incurred but not yet paid.

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