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Income Taxes - Reconciliation Of Statutory Rate To Effective Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Amount
Federal income tax at statutory rate	$ 699	$ 487	$ 867
State income taxes, net of federal tax effect	66	65	143
Tax credits	(14)	(27)	(10)
State law changes	(15)	0	(136)
Other, net	(29)	(32)	(4)
Income taxes	$ 707	$ 493	$ 860
Percent
Federal income tax at statutory rate	21.00%	21.00%	21.00%
State income taxes, net of federal tax effect	2.00%	2.90%	3.50%
Tax credits	(0.40%)	(1.20%)	(0.20%)
State law changes	(0.40%)	0.00%	(3.30%)
Other, net	(1.00%)	(1.40%)	(0.20%)
Effective income taxes rate	21.20%	21.30%	20.80%

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