Contingencies (NPM Adjustment Disputes) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) state	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) state contract	Dec. 31, 2015 USD ($)	Sep. 30, 2021 contract
Loss Contingencies [Line Items]
Litigation settlement	$ 90
Loss contingency number of states with concluded hearings | contract						4
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Litigation settlement	4,300	$ 4,400	$ 4,200
PM USA [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Amount ordered to be paid from other party				$ 1,030
Litigation settlement, amount expected to be awarded from other party	320
PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states with settled litigation including New York, subsequent expansion | state				36
PM USA [Member] | Health Care Cost Recovery Actions [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of additional states extended with settled litigation | contract				1
PM USA [Member] | Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	$ 388
Litigation settlement		$ 4
PM USA [Member] | Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states not settled | state	10
Loss contingency number of states with concluded hearings | state	9
Loss contingency, number of states not in compliance with escrow statues | state	2
Loss contingency, number of states in compliance with escrow statues | state	7
Loss contingency, damages sought, value	$ 23
PM USA [Member] | Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member] | Pending Litigation [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Loss contingency, reduction to cost of sales	21
PM USA [Member] | Health Care Cost Recovery Actions, 2005 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	181
PM USA [Member] | Health Care Cost Recovery Actions, 2006 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	154
PM USA [Member] | Health Care Cost Recovery Actions, 2007 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	185
PM USA [Member] | Health Care Cost Recovery Actions, 2008 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	250
PM USA [Member] | Health Care Cost Recovery Actions, 2009 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	211
PM USA [Member] | Health Care Cost Recovery Actions, 2010 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	218
PM USA [Member] | Health Care Cost Recovery Actions, 2011 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	166
PM USA [Member] | Health Care Cost Recovery Actions, 2012 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	214
PM USA [Member] | Health Care Cost Recovery Actions, 2013 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	224
PM USA [Member] | Health Care Cost Recovery Actions, 2014 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	258
PM USA [Member] | Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	313
PM USA [Member] | Health Care Cost Recovery Actions, 2016 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	292
PM USA [Member] | Health Care Cost Recovery Actions, 2017 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	302
PM USA [Member] | Health Care Cost Recovery Actions, 2018 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	325
PM USA [Member] | Health Care Cost Recovery Actions, 2019 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	444
PM USA [Member] | Health Care Cost Recovery Actions, 2020 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain	$ 572
PM USA [Member] | Health Care Cost Recovery Actions, 2004-2018 [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of additional states extended with settled litigation | state				35
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states not settled | state	10
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] | Period One
Loss Contingencies [Line Items]
Loss contingency, number of states not settled | state	9
Loss contingency, number of states not settled arbitration period	3 years
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] | Period Two
Loss Contingencies [Line Items]
Loss contingency, number of states not settled | state	1
Loss contingency, number of states not settled arbitration period	1 year
New York [Member] | PM USA [Member] | Health Care Cost Recovery Actions, Transition Years 2004-2020 [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement					$ 373