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Contingencies (Non-Engle Progeny Litigation) (Details) - USD ($)	1 Months Ended
	Sep. 30, 2021	Feb. 28, 2021	May 31, 2020	Feb. 29, 2020	Sep. 30, 2019	Aug. 31, 2019	Oct. 31, 2017
Non-Engle Progeny Smoking And Health Case, Principe [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded				$ 11,000,000
Punitive damages awarded				$ 0
Non-Engle Progeny Smoking and Health Case, Greene [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded		$ 2,300,000	$ 30,000,000		$ 10,000,000
Non-Engle Progeny Smoking and Health Case, Laramie [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded						$ 11,000,000
Punitive damages awarded						$ 10,000,000
Damages awarded, value	$ 21,000,000
Provision related to litigation recorded	$ 27,100,000
Non-Engle Progeny Smoking and Health Case, Gentile [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded							$ 7,100,000
Non-Engle Progeny Smoking and Health Case, Gentile [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages award, allocation percentage							75.00%

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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