Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details) - Pending Litigation [Member] - USD ($) $ in Millions	Jun. 30, 2024	Oct. 31, 2023	Sep. 30, 2021	Mar. 31, 2019
Engle Progeny Cases, Garcia [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded	$ 2
Engle Progeny Cases, Garcia [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded	$ 10
Engle Progeny Cases, Chacon [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded		$ 1
Engle Progeny Cases, Chacon [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded		$ 1
Engle Progeny Cases, Lipp [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded			$ 15
Engle Progeny Cases, Lipp [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded			$ 28
Engle Progeny Cases, McCall [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded				$ 1
Engle Progeny Cases, McCall [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded				1
Punitive damages awarded				$ 1