Earnings Per Share: (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net earnings attributable to PMI	$ 2,148	$ 1,995
Less distributed and undistributed earnings attributable to share-based payment awards	6	6
Net earnings for basic EPS	2,142	1,989
Net earnings for diluted EPS	$ 2,142	$ 1,989
Weighted-average shares for basic EPS (in shares)	1,553,000,000	1,552,000,000
Plus contingently issuable performance stock units (PSUs), (in shares)	2,000,000	1,000,000
Weighted-average shares for diluted EPS (in shares)	1,555,000,000	1,553,000,000
Antidilutive stock awards (in shares)	0	0