Income Taxes - Reconciliation of Effective Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%
Income tax credits	(59.00%)	(85.00%)	(124.00%)
Effects of ratemaking	(6.00%)	(11.00%)	(16.00%)
State income tax, net of federal income tax benefit	(1.00%)	(6.00%)	(6.00%)
Noncontrolling interest	(1.00%)	(4.00%)	(6.00%)
Income tax effect of foreign income	(2.00%)	(1.00%)	(4.00%)
Tax rate change - deferred (foreign)	0.00%	2.00%	0.00%
Equity earnings	(2.00%)	(3.00%)	(3.00%)
Other, net	0.00%	0.00%	2.00%
Effective income tax rate	(50.00%)	(87.00%)	(136.00%)