Acquisition of NJOY - Narrative (Details)			1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 01, 2023 USD ($)	Jul. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 21, 2024 product	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)
Business Acquisition [Line Items]
Business acquisition, intangible assets, expected tax deductible amount		$ 0
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
Term Loan [Member]
Business Acquisition [Line Items]
Face amount		2,000,000,000.0								$ 2,000,000,000.0
NJOY Holdings, Inc. [Member]
Business Acquisition [Line Items]
Total consideration	$ 2,901,000,000	2,901,000,000
Payments to acquire businesses, gross		2,750,000,000	$ 250,000,000
Business combination, contingent consideration arrangements, range of outcomes, value, high		500,000,000
Business combination, contingent consideration, liability				20,000,000		20,000,000			$ 130,000,000
Number of products | product								4
Business combination, change in amount of contingent consideration, liability						140,000,000
Business combination, acquisition related costs				$ 44,000,000	$ 14,000,000	$ 187,000,000	$ 63,000,000
NJOY Holdings, Inc. [Member] | Menthol Pod [Member]
Business Acquisition [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high		250,000,000
NJOY Holdings, Inc. [Member] | Blueberry Pod [Member]
Business Acquisition [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high		125,000,000
NJOY Holdings, Inc. [Member] | Watermelon Pod [Member]
Business Acquisition [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high		$ 125,000,000
NJOY Holdings, Inc. [Member] | Weighted Average
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		18 years