Income Taxes (Components of income tax expense and reconciliation of effective tax rate) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current
Federal	$ 561	$ (34)	$ 78
Foreign	66	100	26
State and local	125	94	88
Current income tax expense	752	160	192
Deferred
Federal	5	525	260
Foreign	13	(16)	14
State and local	17	28	(6)
Deferred income tax expense (benefit)	35	537	268
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Computed tax at statutory tax rate	674	588	388
State income taxes, net of federal tax benefit	116	102	64
Other permanent items	(3)	18	1
Change in federal valuation allowance	(15)	15	0
Foreign restructuring	0	(37)	0
Foreign tax rate differential	15	11	7
Total	$ 787	$ 697	$ 460