Held-for-Sale Treatment of the Clean Energy Businesses - Schedule of Carrying Amounts (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS
TOTAL CURRENT ASSETS	$ 133	$ 163
Non-utility property, net accumulated depreciation	12	13
CURRENT LIABILITIES
TOTAL CURRENT LIABILITIES	79	76
Disposal Group, Held-for-sale, Not Discontinued Operations | Clean Energy Businesses
CURRENT ASSETS
Cash and temporary cash investments	1	0
Accounts receivable and other receivables - net allowance for uncollectible accounts	2	1
Accrued unbilled revenue	0	1
Restricted cash	8	5
Other current assets	0	1
TOTAL CURRENT ASSETS	11	8
Non-utility property, net accumulated depreciation	59	76
NET PLANT	59	76
OTHER NONCURRENT ASSETS
Intangible assets, less accumulated amortization	56	72
Operating lease right-of-use asset	7	7
TOTAL OTHER NONCURRENT ASSETS	63	79
TOTAL ASSETS	133	163
CURRENT LIABILITIES
Long-term debt due within one year	2	2
Operating lease liabilities	2	2
Other current liabilities	10	4
TOTAL CURRENT LIABILITIES	14	8
NONCURRENT LIABILITIES
Asset retirement obligations	3	3
Operating lease liabilities	5	5
TOTAL NONCURRENT LIABILITIES	8	8
LONG-TERM DEBT	57	60
TOTAL LIABILITIES	$ 79	$ 76