Discontinued Operations and Disposal Groups (Details) - Cash Flows - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Discontinued Operations - Income Statement
Depreciation, Amortization and Accretion, Net	$ 1,854	$ 4,180
Gain (Loss) on Sale of Assets and Asset Impairment Charges	(8)	(83)
Deferred income taxes and amortization of investment tax credits	143	(163)
Net fair value changes related to derivatives	(59)	(490)
Net realized and unrealized (gains) losses on NDT funds	205	(376)
Net unrealized (gains) losses on equity investments	16	(96)
Other non-cash operating activities	(276)	331
Payments to Acquire Property, Plant, and Equipment	(3,507)	(4,040)
Collection of deferred purchase price	169	2,209
Decrease in capital expenditures not paid	(276)	(313)
Increase in deferred purchase price	348	1,958
Increase in PPE related to ARO update	(335)	2
Exelon Generation Co L L C [Member]
Discontinued Operations - Income Statement
Depreciation, Amortization and Accretion, Net	207	2,686
Asset Impairment Charges	0	493
Gain (Loss) on Sale of Assets and Asset Impairment Charges	9	(79)
Deferred income taxes and amortization of investment tax credits	(143)	(268)
Net fair value changes related to derivatives	(59)	(490)
Net realized and unrealized (gains) losses on NDT funds	205	(376)
Net unrealized (gains) losses on equity investments	16	(96)
Other non-cash operating activities	36	(636)
Payments to Acquire Property, Plant, and Equipment	(227)	(731)
Collection of deferred purchase price	169	2,209
Decrease in capital expenditures not paid	(128)	(66)
Increase in deferred purchase price	348	1,958
Increase in PPE related to ARO update	$ 335	$ 0

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

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