Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value Schedule of Derivative Financial Instruments, Pension Plan Assets and Debt

The aggregate fair values of PMI’s derivative financial instruments, pension plan assets and debt as of December 31, 2017 and 2016, were as follows:

(in millions)	Fair ValueAtDecember 31,2017		QuotedPricesin Active Markets forIdenticalAssets/Liabilities(Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs(Level 3)
Assets:
Foreign exchange contracts	$	140	$	—	$	140	$	—
Pension plan assets	7,288		5,260		2,028		—
Total assets in fair value hierarchy	$	7,428	$	5,260	$	2,168	$	—
Pension plan assets measured at net asset value(a)	310
Total assets	$	7,738
Liabilities:
Debt	$	35,856	$	35,685	$	171	$	—
Foreign exchange contracts	1,128		—		1,128		—
Total liabilities	$	36,984	$	35,685	$	1,299	$	—

(in millions)	Fair Value AtDecember 31, 2016		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs(Level 3)
Assets:
Foreign exchange contracts	$	813	$	—	$	813	$	—
Pension plan assets	6,160		4,420		1,740		—
Total assets in fair value hierarchy	$	6,973	$	4,420	$	2,553	$	—
Pension plan assets measured at net asset value(a)	297
Total assets	$	7,270
Liabilities:
Debt	$	30,192	$	29,756	$	436	$	—
Foreign exchange contracts	163		—		163		—
Total liabilities	$	30,355	$	29,756	$	599	$	—

^(a) In accordance with FASB ASC Subtopic 820-10, certain investments measured at fair value using the net asset value per share practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in these tables are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position.