Investments in Equity Securities (Investment in ABI Narrative) (Details) - USD ($) shares in Millions	3 Months Ended				12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2023	Dec. 31, 2022
ABI [Member]
Investments [Line Items]
Equity method investment, ownership percentage (approximately)					10.00%
Equity method investment, number of shares owned, restricted (in shares)					185.0
Equity method investment, number of shares owned, common (in shares)					12.0
Equity method investments					$ 9,676,000,000	$ 8,975,000,000
Equity method investment, difference between carrying amount and fair value, percentage	(22.00%)			(35.00%)	32.00%	33.00%
Equity method investment, impairment	$ 2,500,000,000			$ 6,200,000,000
Difference between carrying amount and underlying equity					$ 2,500,000,000
Cronos Group Inc. [Member]
Investments [Line Items]
Equity method investment, ownership percentage (approximately)					41.10%
Equity method investment, number of shares owned, common (in shares)					156.6
Equity method investment, difference between carrying amount and fair value					$ (8,000,000)	$ 22,000,000
Equity method investment, difference between carrying amount and fair value, percentage		20.00%	25.00%		2.00%	(6.00%)
Equity method investment, impairment		$ 107,000,000	$ 205,000,000		$ 0
Level 1 [Member] | ABI [Member]
Investments [Line Items]
Fair value of investment					$ 12,700,000,000	$ 11,900,000,000
Equity method investment, difference between carrying amount and fair value	$ (2,500,000,000)			$ (6,200,000,000)