Goodwill and Other Intangible Assets, net (Narrative) (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Apr. 30, 2024 USD ($)	Oct. 01, 2023	Sep. 30, 2023 USD ($)	Jul. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
Amortization of intangible assets	$ 37,000,000	$ 27,000,000	$ 64,000,000	$ 45,000,000	$ 128,000,000
Finite-lived intangible assets, amortization expense, next twelve months	150,000,000		150,000,000
Finite-lived intangible assets, amortization expense, year two	150,000,000		150,000,000
Finite-lived intangible assets, amortization expense, year three	150,000,000		150,000,000
Finite-lived intangible assets, amortization expense, year four	150,000,000		150,000,000
Finite-lived intangible assets, amortization expense, year five	150,000,000		150,000,000
Asset impairment	354,000,000	$ 0	354,000,000	$ 0
Carrying value	13,048,000,000		13,048,000,000		13,686,000,000					$ 12,384,000,000
Goodwill, accumulated impairment loss	0		0		0
Skoal [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks					$ 3,900,000,000
Percentage exceeded over carrying value					6.00%
Amount over carrying value					$ 200,000,000
Asset impairment	354,000,000		354,000,000
Carrying value	$ 3,600,000,000		$ 3,600,000,000
Skoal [Member] | Measurement Input, Perpetual Growth Rate [Member]
Loss Contingencies [Line Items]
Measurement input	0		0				0.01
Skoal [Member] | Measurement Input, Discount Rate [Member]
Loss Contingencies [Line Items]
Measurement input	0.115		0.115				0.110
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						$ 2,800,000,000		$ 1,800,000,000	$ 1,800,000,000	$ 1,000,000,000.0
Disposal group, deferred gain on disposal					$ 2,700,000,000
Disposal group, gain (loss) on disposal	$ 2,700,000,000		$ 2,700,000,000
Weighted Average
Loss Contingencies [Line Items]
Finite-lived intangible asset, useful life	19 years		19 years
MST and snus [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks	$ 8,500,000,000		$ 8,500,000,000
MST and snus [Member] | Copenhagen [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks	4,000,000,000.0		4,000,000,000.0
MST and snus [Member] | Skoal [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks	3,600,000,000		3,600,000,000
MST and snus [Member] | Other [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks	900,000,000		900,000,000
Middleton [Member]
Loss Contingencies [Line Items]
Indefinite-lived trademarks	$ 2,600,000,000		$ 2,600,000,000