Background and Basis of Presentation (Background Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Proceeds from the Ste. Michelle Transaction, net of cash transferred	$ 1,200	$ 0	$ 0	$ 1,176
PM USA [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in consolidated subsidiary		100.00%
Horizon {Member] | PM USA [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in consolidated subsidiary		75.00%
Horizon {Member] | JTIUH [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners		25.00%