Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 90
Tobacco and Health Litigation Cases [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	182	$ 83	$ 77
Tobacco and Health Litigation Cases [Member] | General Corporate [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	90	0	0
Tobacco and Health Litigation Cases [Member] | Interest And Other Debt Expense, Net [Member] | Interest and other debt expense, net [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	9	4	5
PM USA [Member] | Tobacco and Health Litigation Cases [Member] | Operating Income (Loss) [Member] | Operating Segments [Member] | Smokeable Products [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 83	$ 79	$ 72