This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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-Topic 805
-SubTopic 10
-Section 25
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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 450
-SubTopic 20
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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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Segment Reporting (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2021
Segment Reporting Information [Line Items]
Provision related to litigation recorded				$ 90
Smokeable Products Segment [Member] \| Operating Segments [Member] \| Non-Participating Manufacturer Arbitration Panel Decision [Member] \| Operating Income (Loss) [Member] \| NPM Adjustment to Cost Of Sales [Member] \| PM USA [Member]
Segment Reporting Information [Line Items]
Gain (loss) related to litigation settlement	$ 60	$ 32
Smokeable Products Segment [Member] \| Operating Segments [Member] \| Tobacco and Health Litigation Cases [Member] \| Operating Income (Loss) [Member] \| PM USA [Member]
Segment Reporting Information [Line Items]
Provision related to litigation recorded	$ 12		$ 35
Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Business combination, acquisition related costs		$ 37