Earnings Per Share (Calculation of Basic and Diluted EPS) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net earnings attributable to PMI	$ 1,947	$ 2,319	$ 3,773	$ 3,673
Less distributed and undistributed earnings attributable to share-based payment awards	5	5	10	8
Net earnings for basic and diluted EPS	$ 1,942	$ 2,314	$ 3,763	$ 3,665
Weighted-average shares for basic EPS (in shares)	1,558,000,000	1,556,000,000	1,557,000,000	1,556,000,000
Plus contingently issuable performance stock units (PSUs) (in shares)	0	0	0	0
Weighted-average shares for diluted EPS (in shares)	1,558,000,000	1,556,000,000	1,557,000,000	1,556,000,000
Antidilutive stock awards (in shares)			0	0