Goodwill and Other Intangible Assets, net (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Jul. 31, 2023
Loss Contingencies [Line Items]
Amortization of intangible assets	$ 42	$ 19	$ 87	$ 54	$ 73
Finite-lived intangible assets, amortization expense, next twelve months	170		170
Finite-lived intangible assets, amortization expense, year two	170		170
Finite-lived intangible assets, amortization expense, year three	170		170
Finite-lived intangible assets, amortization expense, year four	170		170
Finite-lived intangible assets, amortization expense, year five	170		170
Disposal group, including discontinued operation, interest income	3		54
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | IQOS Tobacco Heating System [Member]
Loss Contingencies [Line Items]
Disposal group, purchase agreement, consideration, additional payment					$ 1,000	$ 1,800
Disposal group, deferred gain on sale of rights under an agreement	$ 2,700		$ 2,700
Weighted Average
Loss Contingencies [Line Items]
Finite-lived intangible asset, useful life	18 years		18 years
UST Inc. [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks	$ 8,800		$ 8,800
Middleton [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks	$ 2,600		$ 2,600