Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021	Apr. 30, 2022	Sep. 30, 2021	May 31, 2021	Feb. 29, 2020	Mar. 31, 2019	Feb. 28, 2019	Sep. 30, 2018	Jul. 31, 2018	Nov. 30, 2017	Sep. 30, 2015	Jan. 31, 2015
Loss Contingencies [Line Items]
Loss contingency accrual, provision		$ 90
Engle Progeny Cases, Schertzer [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded			$ 3
Engle Progeny Cases, Schertzer [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded			$ 0
Engle Progeny Cases, Lipp [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded				$ 15
Engle Progeny Cases, Lipp [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded				$ 28
Engle Progeny Cases, Garcia [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded					$ 6
Engle Progeny Cases, Duignan [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded						$ 3
Engle Progeny Cases, Duignan [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded						$ 12
Engle Progeny Cases, McCall [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded							$ 1
Engle Progeny Cases, McCall [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded							1
Punitive damages awarded							$ 0
Engle Progeny Cases, Holliman [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded								$ 3
Engle Progeny Cases, Holliman [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded								$ 0
Engle Progeny Cases, Chadwell [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded									$ 2
Engle Progeny Cases, Chadwell [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded									$ 0
Engle Progeny Cases, Kaplan [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded										$ 2
Engle Progeny Cases, Kaplan [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded										$ 0
Engle Progeny Cases, R. Douglas [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded											$ 1
Engle Progeny Cases, R. Douglas [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded											$ 0
Engle Progeny Cases, Cooper [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded												$ 5
Engle Progeny Cases, Cooper [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded												1
Punitive damages awarded												$ 0
Engle Progeny Cases, D. Brown [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded	$ 5												$ 8
Engle Progeny Cases, D. Brown [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded													5
Punitive damages awarded													$ 0
Engle Progeny Cases, Cuddihee [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value	$ 2