Segment Reporting (Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Segment Reporting Information [Line Items]
Net revenues	$ 21,585	$ 20,638	$ 19,319	$ 16,556	$ 19,189	$ 19,935	$ 19,041	$ 16,788	$ 78,098	[1]	$ 74,953	[1]	$ 73,908	[1]
Amortization of intangibles									(88)		(74)		(82)
General corporate expenses									(164)		(161)		(162)
Equity (income)/loss in unconsolidated subsidiaries, net									(59)		(94)		(105)
Operating income									11,503		10,815		10,623
Interest expense, net									(914)		(891)		(1,008)
Earnings before income taxes									10,589		9,924		9,615
Indonesia [Member] | Geographic Concentration Risk [Member]
Segment Reporting Information [Line Items]
Net revenues									8,000		7,700		7,100
Germany [Member] | Geographic Concentration Risk [Member]
Segment Reporting Information [Line Items]
Net revenues									7,200		7,100		7,200
Operating Segments [Member] | European Union [Member]
Segment Reporting Information [Line Items]
Net revenues									27,580		27,129		26,563
Operating companies income									3,775		3,994		3,576
Operating Segments [Member] | Eastern Europe, Middle East & Africa [Member]
Segment Reporting Information [Line Items]
Net revenues									18,045		18,286		18,328
Operating companies income									2,888		3,016		3,425
Operating Segments [Member] | Asia [Member]
Segment Reporting Information [Line Items]
Net revenues									22,635		20,531		19,469
Operating companies income									4,149		3,196		2,886
Operating Segments [Member] | Latin America & Canada [Member]
Segment Reporting Information [Line Items]
Net revenues									9,838		9,007		9,548
Operating companies income									$ 1,002		$ 938		$ 1,085

[1] Total net revenues attributable to customers located in Indonesia, PMI’s largest market in terms of net revenues, were $8.0 billion, $7.7 billion and $7.1 billion for the years ended December 31, 2017, 2016 and 2015, respectively. Total net revenues attributable to customers located in Germany were $7.2 billion, $7.1 billion and $7.2 billion for the years ended December 31, 2017, 2016 and 2015, respectively.