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Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Investments [Line Items]
Impairment of JUUL equity securities	$ 0	$ 2,600,000,000	$ 0	$ 2,600,000,000
ABI [Member]
Investments [Line Items]
Equity method investment, impairment	$ 6,157,000,000		$ 6,157,000,000		$ 0
JUUL [Member]
Investments [Line Items]
Impairment of JUUL equity securities		$ 2,600,000,000		$ 2,600,000,000

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Amount of impairment loss on investment in equity security without readily determinable fair value.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

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