Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details) - USD ($) $ in Millions	1 Months Ended					12 Months Ended
	Jan. 31, 2023	Dec. 31, 2022	Oct. 31, 2022	Aug. 31, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2022	Apr. 30, 2022	Sep. 30, 2021	May 31, 2021	Feb. 29, 2020	Mar. 31, 2019	Sep. 30, 2018	Jul. 31, 2018	Sep. 30, 2015
Loss Contingencies [Line Items]
Provision related to litigation recorded						$ 90
Engle Progeny Cases, Hoffman [Member] | Pending Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded	$ 5
Engle Progeny Cases, Hoffman [Member] | Pending Litigation [Member] | PM USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded	3
Punitive damages awarded	0
Engle Progeny Cases, Levine [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded							$ 1
Engle Progeny Cases, Levine [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded							$ 0
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, Garcia [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded										3
Punitive damages awarded										$ 0
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, 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, 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, Holliman [Member] | Settled Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Damages awarded, value	$ 3
Engle Progeny Cases, Tuttle [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value			$ 1
Engle Progeny Cases, Miller [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value		$ 1
Engle Progeny Cases, D. Brown [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value				$ 5
Engle Progeny Cases, Cuddihee [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value					$ 2