Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details) - USD ($) $ in Millions	21 Months Ended
	Mar. 31, 2025	Jun. 30, 2024	Oct. 31, 2023	Sep. 30, 2021	Mar. 31, 2019	Jul. 31, 2018	Sep. 30, 2015
Engle Progeny Cases, Garcia [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded		$ 2
Engle Progeny Cases, Garcia [Member] \| Pending Litigation [Member] \| PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded		$ 10
Engle Progeny Cases, Chacon [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded			$ 1
Engle Progeny Cases, Chacon [Member] \| Pending Litigation [Member] \| PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded			$ 1
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, 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					$ 1
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] \| PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded							$ 1
Punitive damages awarded							$ 0
Engle Progeny Cases, Chadwell [Member] \| Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value	$ 2
Engle Progeny Cases, Schertzer [Member] \| Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value	4
Engle Progeny Cases, Hoffman [Member] \| Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value	3
Engle Progeny Cases, Levine [Member] \| Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value	$ 1