Investments in Equity Securities (Earnings from Equity Investments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments [Line Items]
(Income) losses from investments in equity securities	$ (493)	$ 2,186	$ 5,979
(Income) losses from investments in equity securities	(243)	3,641	5,979
ABI [Member]
Investments [Line Items]
(Income) losses from investments in equity securities	(539)	1,973	5,564
Cronos [Member]
Investments [Line Items]
(Income) losses from investments in equity securities	46	213	415
JUUL [Member]
Investments [Line Items]
JUUL	$ 250	$ 1,455	$ 0