Contingencies (Engle Class Action And Engle Progeny Trial Results) (Details)		1 Months Ended
	Jul. 24, 2020 USD ($) case plantiff	Jul. 31, 2006	Jan. 31, 2008 case	Jul. 31, 2000 USD ($)
Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Punitive damages awarded | $				$ 145,000,000,000
Engle Progeny Cases [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded | $				$ 74,000,000,000
Loss contingency, period for decertified class members to file individual actions against defendants		1 year
Engle Progeny Cases, State [Member]
Loss Contingencies [Line Items]
Number of cases pending			9,300
Subsequent Event [Member] | Engle Progeny Cases [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of verdicts returned	134
Number of unfavorable verdicts	78
Number of claims with unfavorable verdicts pending/reversed	4
Number of favorable verdicts	48
Subsequent Event [Member] | Engle Progeny Cases, State [Member]
Loss Contingencies [Line Items]
Number of cases pending	1,400
Number of plaintiffs | plantiff	1,800
Subsequent Event [Member] | Engle Progeny Cases, State [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts	43
Subsequent Event [Member] | Engle Progeny Cases, Federal [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of cases pending	4
Subsequent Event [Member] | Engle Progeny Cases, D Cohen, Collar, Chacon [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of verdicts reversed	4
Subsequent Event [Member] | Engle Progeny Cases, Reider and Banks [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Zero damages verdicts	2
Damages awarded, value | $	$ 0
Subsequent Event [Member] | Engle Progeny Cases, Weingart and Hancock [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value | $	$ 0
Zero damages verdict modified	2
Subsequent Event [Member] | Engle Progeny Cases, Pollari [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts	1
Subsequent Event [Member] | Engle Progeny Cases, Gloger, Rintoul and Duignam [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts	3
Subsequent Event [Member] | Engle Progeny Cases, Freeman [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts	1