Provision (Benefit) for Income Taxes Reconciliations to Recorded Tax Provision (Benefit) Table (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Effective Income Tax Rate Reconciliation [Abstract]
Provision (benefit) at statutory rate	$ 925	$ 534	$ 435
Increases (decreases) in taxes resulting from:
State income taxes (net of federal benefit)	129	113	71
State deferred income tax rate change	(25)	(92)	0
Federal valuation allowance	0	(70)	3
Federal settlements	0	(45)	0
Impact of nontaxable noncontrolling interests	(26)	(14)	(9)
Other – net	2	(1)	11
Less: Provision (benefit) for income taxes	$ 1,005	$ 425	$ 511