Contingencies (Antitrust Litigation and Shareholder Class Action and Shareholder Derivative Lawsuits) (Details) $ in Millions	1 Months Ended					3 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) plantiff	Apr. 30, 2023 USD ($)	Oct. 31, 2022 USD ($)	Feb. 28, 2022 plantiff	Jan. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 23, 2023 lawsuit	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Nov. 30, 2020 complaint	Apr. 30, 2020
Loss Contingencies [Line Items]
Loss contingency, number of complaints | complaint														3
Number of plaintiffs | plantiff	3			4
Litigation settlement						$ 90
Loss contingency accrual, provision								$ 90
Payments for legal settlements					$ 90
Pre-tax charge	$ 373					$ 91	$ 71	$ 91		$ 381		$ 55	$ 25
Subsequent Event [Member]
Loss Contingencies [Line Items]
Loss contingency, class action lawsuit | lawsuit									17
Federal And State Shareholder Derivative Lawsuits [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision							$ 27
Loss contingency, settlement funding amount			$ 100
Loss contingency, settlement funding period			5 years
Judgments paid		$ 15
Pre-tax charge											$ 100
JUUL [Member]
Loss Contingencies [Line Items]
Equity securities, ownership percentage															35.00%