Investments in Equity Securities (Earnings in Equity Securities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule of Equity Method Investments [Line Items]
(Income) losses from investments under equity method of accounting	$ (134)	$ (251)
(Income) losses from equity investments	(34)	(51)
ABI [Member]
Schedule of Equity Method Investments [Line Items]
(Income) losses from investments under equity method of accounting	(200)	(318)
Cronos [Member]
Schedule of Equity Method Investments [Line Items]
(Income) losses from investments under equity method of accounting	66	67
JUUL [Member]
Schedule of Equity Method Investments [Line Items]
JUUL	$ 100	$ 200