Dispositions (Narrative) (Details) - Discontinued Operations, Held-for-sale - Commercial Renewables $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
Nov. 30, 2022 Units	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of disposal groups \| Units	2
Pre-tax impairment		$ 220	$ 1,700
Noncontrolling interest balance		$ 1,700	$ 1,600

Amount before tax of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a discontinued operation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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