Contingencies (NPM Adjustment Disputes) (Details) $ in Millions	1 Months Ended			3 Months Ended					12 Months Ended			252 Months Ended
	Jul. 31, 2022 USD ($)	Mar. 31, 2022 USD ($) state	Sep. 30, 2021 state	Mar. 31, 2023 USD ($) state	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($) state	Dec. 31, 2018 state	Dec. 31, 2015 USD ($)	Dec. 31, 2018 state
Loss Contingencies [Line Items]
Litigation settlement							$ 90
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Litigation settlement				$ 900		$ 900
PM USA [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states with settled litigation including New York, subsequent expansion | state		37										36
Loss contingency, credits to offset payments				1,150
Litigation settlement, amount expected to be awarded from other party				410
PM USA [Member] | Health Care Cost Recovery Actions [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 [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of additional states extended with settled litigation | state										1
PM USA [Member] | Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain				$ 388
PM USA [Member] | Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states with concluded hearings | state				9					9
Loss contingency, number of states not settled | state									10
Loss contingency, number of states not in compliance with escrow statues | state			3
Loss contingency, number of states in compliance with escrow statues | state				7
Loss contingency, damages sought, value					$ 5			$ 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					$ 3			$ 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				285
PM USA [Member] | Health Care Cost Recovery Actions, 2018 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain				318
PM USA [Member] | Health Care Cost Recovery Actions, 2019 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain				415
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, 2021 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain				$ 675
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				9
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				8
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
PM USA [Member] | Health Care Cost Recovery Actions, 2022 NPM Adjustments
Loss Contingencies [Line Items]
Estimate of possible gain				$ 571
New York [Member] | PM USA [Member] | Health Care Cost Recovery Actions, Transition Years 2004-2018 [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement											$ 435
MONTANA [Member] | PM USA [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement									$ 4
Illinois [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement						$ 80
Illinois [Member] | PM USA [Member] | Health Care Cost Recovery Actions, Transition Years 2004-2021 [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement		$ 80
Illinois [Member] | PM USA [Member] | Health Care Cost Recovery Actions, Transition Years 2019-2021 [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement		$ 20
Iowa [Member] | PM USA [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 133
New Mexico [Member] | PM USA [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 84