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Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details) $ in Millions		1 Months Ended			3 Months Ended				6 Months Ended
	Jul. 26, 2021 USD ($)	Jun. 30, 2021 USD ($) case	May 31, 2021 USD ($)	Apr. 29, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2018 USD ($)	Jun. 30, 2021 USD ($) case	Feb. 29, 2020 USD ($)	Jan. 31, 2020 USD ($)	Nov. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Feb. 28, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jul. 31, 2018 USD ($)	Nov. 30, 2017 USD ($)	Apr. 30, 2017 USD ($)	Sep. 30, 2015 USD ($)	Jan. 31, 2015 USD ($)
Engle Progeny Cases, Garcia [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded			$ 3.0
Engle Progeny Cases, Duignan [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded										$ 3.0
Engle Progeny Cases, Duignan [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded										$ 12.0
Engle Progeny Cases, Cuddihee [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded											$ 3.0
Engle Progeny Cases, Cuddihee [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded											$ 0.0
Engle Progeny Cases, Rintoul [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded												$ 9.0
Engle Progeny Cases, Rintoul [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded												74.0
Engle Progeny Cases, Gloger [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded												15.0
Engle Progeny Cases, Gloger [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded												$ 11.0
Engle Progeny Cases, McCall [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded													$ 1.0
Engle Progeny Cases, McCall [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded													1.0
Punitive damages awarded													0.0
Engle Progeny Cases, Neff [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded													4.0
Engle Progeny Cases, Neff [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded													$ 2.0
Engle Progeny Cases, Mahfuz [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded														$ 12.0
Engle Progeny Cases, Mahfuz [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded														10.0
Engle Progeny Cases, Holliman [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded														3.0
Engle Progeny Cases, Holliman [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded														$ 0.0
Engle Progeny Cases, Chadwell [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded															$ 2.0
Engle Progeny Cases, Chadwell [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded															$ 0.0
Engle Progeny Cases, Kaplan [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																$ 2.0
Engle Progeny Cases, Kaplan [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded																$ 2.0
Engle Progeny Cases, R. Douglas [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																	$ 1.0
Engle Progeny Cases, R. Douglas [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded																	$ 0.0
Engle Progeny Cases, Sommers [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																		$ 1.0
Provision related to litigation recorded									$ 1.0
Damages awarded, value					$ 3.0
Engle Progeny Cases, Sommers [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded																		$ 0.0
Engle Progeny Cases, Cooper [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																			$ 5.0
Engle Progeny Cases, Cooper [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																			1.0
Punitive damages awarded																			$ 0.0
Engle Progeny Cases, D. Brown [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																				$ 8.0
Engle Progeny Cases, D. Brown [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded																				$ 9.0
Engle Progeny Cases, Berger [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value					29.0			$ 29.0
Engle Progeny Cases, Santoro [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value					$ 1.0		$ 1.0
Engle Progeny Cases, Dean (Kerrivan) [Member] | Settled Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Pre-tax charges (gain) included in net earning						$ 26.0
Engle Progeny Cases, Landi [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value		$ 3.0
Engle Progeny Cases, Landi [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value							$ 10.0
Engle Progeny Cases, Naugle, Gore, M. Brown, Jordan, Theis [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Loss contingency, number of cases with payments a year or more ago | case		5							5
Engle Progeny Cases, Naugle [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value									$ 8.0
Engle Progeny Cases, Gore [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value									2.0
Engle Progeny Cases, M. Brown [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value									8.0
Judgments paid (approximately)				$ 8.2
Engle Progeny Cases, Jordan [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value									$ 4.0
Engle Progeny Cases, Theis [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Judgments paid (approximately)			$ 1.0
Engle Progeny Cases, Theis [Member] | PM USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Damages awarded, value	$ 1.0

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