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Common Stock, Dividend Rate, Percentage Increase

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Equity Securities Without Readily Determinable Fair Value, Ownership Percentage

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Stock Repurchase Program, Rescinded Authorized Repurchase Amount

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Background and Basis of Presentation (Narrative) (Details) - USD ($)		3 Months Ended			6 Months Ended		18 Months Ended
	Jul. 27, 2020	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2019	Apr. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jul. 31, 2019	Mar. 31, 2019	May 31, 2018	Jan. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.84		$ 0.80	$ 1.68	$ 1.60
Common stock, dividend rate, annual (in usd per share)		$ 3.44			$ 3.44
ABI [Member]
Equity, Class of Treasury Stock [Line Items]
Equity method investment, ownership percentage		10.00%			10.00%				10.10%
JUUL [Member]
Equity, Class of Treasury Stock [Line Items]
Equity securities, ownership percentage		35.00%			35.00%			35.00%		35.00%
Cronos [Member]
Equity, Class of Treasury Stock [Line Items]
Equity method investment, ownership percentage		45.00%			45.00%							45.00%
January 2018 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Planned share repurchase program													$ 2,000,000,000.0	$ 1,000,000,000.0
Repurchase of common stock (shares)				3,700,000		6,400,000	34,000,000.0
Average price of repurchased shares, per share (usd per share)				$ 52.93		$ 54.36	$ 58.86
July 2019 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Planned share repurchase program											$ 1,000,000,000.0
Repurchase of common stock (shares)					0
Stock repurchase program, remaining authorized repurchase amount								$ 500,000,000
Helix Innovations LLC [Member]
Equity, Class of Treasury Stock [Line Items]
Noncontrolling interest, ownership percentage by parent			80.00%
Noncontrolling interest, ownership percentage by noncontrolling owners		20.00%			20.00%
Business combination, consideration transferred			$ 353,000,000
Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock, dividend rate, percentage increase	2.40%
Common Stock, Dividends, Per Share, Declared	$ 0.86