Earnings Per Share (Calculation of Basic and Diluted EPS) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net earnings attributable to PMI	$ 1,970	$ 1,938	$ 5,341	$ 5,256
Less distributed and undistributed earnings attributable to share-based payment awards	4	5	12	15
Net earnings for basic and diluted EPS	$ 1,966	$ 1,933	$ 5,329	$ 5,241
Weighted-average shares for basic EPS (in shares)	1,553,000,000	1,551,000,000	1,552,000,000	1,551,000,000
Plus contingently issuable performance stock units (PSUs) (in shares)	1,000,000	0	1,000,000	0
Weighted-average shares for diluted EPS (in shares)	1,554,000,000	1,551,000,000	1,553,000,000	1,551,000,000
Antidilutive stock awards (in shares)	0	0	0	0