Leases Lease Obligations (Tables)

12 Months Ended

Dec. 31, 2024

Leases [Abstract]

Lease, Cost [Table Text Block]

The components of lease cost were as follows (in millions):

	2024		2023
Operating lease cost	$	2	$	4
Finance lease cost:
Amortization of right-of-use assets	$	14	$	14
Interest on lease liabilities	14		15
Total finance lease cost	$	28	$	29
Variable lease cost	$	28	$	33

Lessee, Operating Leases

Supplemental information related to amounts and presentation of leases in the consolidated balance sheets is presented below (in millions):

	Balance Sheet Classification	As of December 31,
		2024		2023
Operating Leases:
Operating lease right-of-use assets	Other noncurrent assets	$	312	$	18
Current liabilities	Accrued expenses and other current liabilities	$	26	$	3
Noncurrent liabilities	Other noncurrent liabilities	286		16
Total operating lease liabilities *		$	312	$	19
Finance Leases:
Finance lease right-of-use assets	Electric utility plant, net	$	276	$	291
Current liabilities	Current portion of finance lease obligations	$	27	$	20
Noncurrent liabilities	Finance lease obligations, net of current portion	276		289
Total finance lease liabilities *		$	303	$	309

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

As of December 31, 2024, maturities of lease liabilities were as follows (in millions):

	Operating Leases		Finance Leases
2025	$	26	$	27
2026	26		27
2027	26		27
2028	26		26
2029	26		26
Thereafter	414		330
Total lease payments	544		463
Less imputed interest	(232)		(160)
Total	$	312	$	303

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Supplemental cash flow information related to leases for the years indicated was as follows (in millions):

	2024		2023		2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used in operating leases	$	3	$	4	$	4
Operating cash flows used in finance leases	14		15		15
Financing cash flows used in finance leases	6		6		7
Right-of-use assets obtained in leasing arrangements:
Operating leases	$	295	$	—	$	—
Finance leases	—		—		29