Investments in Equity Securities (Earnings in Equity Securities) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Schedule of Equity Method Investments [Line Items]
(Income) losses from investments under equity method of accounting	$ (119)	$ (127)	$ (414)	$ (297)
(Income) losses from investments in equity securities	(119)	(127)	(414)	(47)
ABI [Member]
Schedule of Equity Method Investments [Line Items]
(Income) losses from investments under equity method of accounting	(121)	(135)	(434)	(340)
Gain on partial sale of our investment			165
Cronos [Member]
Schedule of Equity Method Investments [Line Items]
(Income) losses from investments under equity method of accounting	2	8	20	43
JUUL [Member]
Schedule of Equity Method Investments [Line Items]
Loss on disposition of JUUL equity securities	$ 0	$ 0	$ 0	$ 250