Earnings per Share (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net earnings attributable to PMI	$ 9,109	$ 8,056	$ 7,185
Less distributed and undistributed earnings attributable to share-based payment awards	26	20	17
Net earnings for basic and diluted EPS	9,083	8,036	7,168
Net earnings for basic and diluted EPS	$ 9,083	$ 8,036	$ 7,168
Weighted-average shares for basic EPS (in shares)	1,558,000,000	1,557,000,000	1,555,000,000
Plus contingently issuable performance stock units (PSUs) (in shares)	1,000,000	1,000,000	1,000,000
Weighted-average shares for diluted EPS (in shares)	1,559,000,000	1,558,000,000	1,556,000,000
Antidilutive stock options (in shares)	0	0	0