Deconsolidation of RBH (Details) $ in Millions, $ in Millions			3 Months Ended	12 Months Ended
	Mar. 01, 2019 USD ($) litigationCase	Mar. 01, 2019 CAD ($) litigationCase	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 litigationCase	Mar. 22, 2019 USD ($)
Loss Contingencies [Line Items]
Number of cases decided in favor of plaintiff | litigationCase					14
Marketing, administration and research costs
Loss Contingencies [Line Items]
Deconsolidation amount				$ 239
Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Loss Contingencies [Line Items]
Pending litigation liabilities measurement input						0.08
Measurement Input, Terminal Growth Rate | Valuation Technique, Discounted Cash Flow
Loss Contingencies [Line Items]
Pending litigation liabilities measurement input						0.025
RBH
Loss Contingencies [Line Items]
Amount deconsolidated from balance sheet						$ 3,519
Equity securities						3,280
Tax benefit for reversal of deferred tax liabilities				49
RBH | Cash
Loss Contingencies [Line Items]
Amount deconsolidated from balance sheet						1,323
RBH | Goodwill
Loss Contingencies [Line Items]
Amount deconsolidated from balance sheet						1,463
RBH | Other Comprehensive Earnings
Loss Contingencies [Line Items]
Amount deconsolidated from balance sheet						529
RBH | Other Assets and Liabilities
Loss Contingencies [Line Items]
Amount deconsolidated from balance sheet						$ 204
Appellate Ruling | Cecilia Letourneau & Conseil Quebecois Sur La Tabac Et La Sante and Jean-Yves Blais Cases | Smoking and Health Class Actions | Canada | RBH
Loss Contingencies [Line Items]
Number of cases decided in favor of plaintiff | litigationCase	2	2
Amount of litigation charge			$ 194	$ 194
Amount of litigation charge net of tax			$ 142
Amount of security ordered, funded by defendant	$ 194	$ 257