Income Taxes - Schedule Of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income before income taxes		$ 6,247	$ 9,951	$ 2,746
Federal statutory income tax rate		21.00%	21.00%	21.00%
Provision for federal income taxes at the statutory rate		$ (1,312)	$ (2,090)	$ (577)
State income tax provision (net of federal tax)		(43)	(45)	(33)
Transaction costs		0	0	(6)
Other		2	29	(12)
Income tax provision		$ (1,353)	$ (2,106)	$ (628)
Effective tax rate	22.00%		21.00%	23.00%