Held-for-Sale Treatment of the Clean Energy Businesses - Schedule of Carrying Amounts (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
CURRENT ASSETS
TOTAL CURRENT ASSETS	$ 0	$ 133
LIABILITIES
TOTAL CURRENT LIABILITIES	$ 0	79
Disposal Group, Held-for-sale, Not Discontinued Operations | Clean Energy Businesses
CURRENT ASSETS
Cash and temporary cash investments		1
Accounts receivable and other receivables - net allowance for uncollectible accounts		2
Restricted cash		8
TOTAL CURRENT ASSETS		11
Non-utility property, net accumulated depreciation		59
NET PLANT		59
OTHER NONCURRENT ASSETS
Intangible assets, less accumulated amortization		56
Operating lease right-of-use asset		7
TOTAL OTHER NONCURRENT ASSETS		63
TOTAL ASSETS		133
LIABILITIES
Long-term debt due within one year		2
Operating lease liabilities		2
Other current liabilities		10
TOTAL CURRENT LIABILITIES		14
NONCURRENT LIABILITIES
Asset retirement obligations		3
Operating lease liabilities		5
TOTAL NONCURRENT LIABILITIES		8
LONG-TERM DEBT		57
TOTAL LIABILITIES		$ 79