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Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2020 USD ($) case	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 USD ($) case	Feb. 29, 2020 USD ($)	Jan. 31, 2020 USD ($)	Nov. 30, 2019 USD ($)	Feb. 28, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jul. 31, 2018 USD ($)	Nov. 30, 2017 USD ($)	Apr. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Sep. 30, 2015 USD ($)	Jan. 31, 2015 USD ($)	Sep. 30, 2014 USD ($)	Jul. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Provision related to litigation recorded	$ 7	$ 34	$ 18	$ 24	$ 29	$ 3	$ 28	$ 17
Pre-tax charges (gain) included in net earning	$ (5)	3,302	142	564	$ 3,686	$ 5,040	$ 63	764
PM USA [Member]
Loss Contingencies [Line Items]
Pre-tax charges (gain) included in net earning			10	17
Engle Progeny Cases, Berger [Berger] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																						$ 6
Provision related to litigation recorded									$ 6
Engle Progeny Cases, Berger [Berger] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded																						$ 21
Engle Progeny Cases, Santoro [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																			$ 2
Provision related to litigation recorded			1
Engle Progeny Cases, Santoro [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																			1
Punitive damages awarded																			$ 1
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, Cuddihee [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded												$ 3
Engle Progeny Cases, Cuddihee [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded												$ 0
Engle Progeny Cases, Rintoul [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded													$ 9
Engle Progeny Cases, Rintoul [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded													74
Engle Progeny Cases, Gloger [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded													15
Engle Progeny Cases, Gloger [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded													$ 11
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, Neff [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded								4
Engle Progeny Cases, Neff [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded								$ 2
Engle Progeny Cases, Mahfuz [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded														$ 12
Engle Progeny Cases, Mahfuz [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded														10
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																$ 2
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, Sommers [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																		$ 1
Provision related to litigation recorded										$ 1
Damages awarded, value										$ 3
Engle Progeny Cases, Sommers [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																					$ 8
Engle Progeny Cases, D. Brown [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded																					$ 9
Engle Progeny Cases, Harris [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																							$ 2
Engle Progeny Cases, Harris [Member] | Pending Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded																							1
Punitive damages awarded																							$ 0
Engle Progeny Cases, Kerrivan [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value		$ 26
Engle Progeny Cases, Landi [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value			$ 10
Engle Progeny Cases, Theis [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Damages awarded, value				$ 17
Engle Progeny Cases, Naugle, Gore, M. Brown, Jordan [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Loss contingency, number of cases with payments a year or more ago | case	4									4
Engle Progeny Cases, Naugle [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value										$ 8
Engle Progeny Cases, Gore [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value										2
Engle Progeny Cases, M. Brown [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value										9
Engle Progeny Cases, Jordan [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Damages awarded, value										$ 4

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