Employee Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2015

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Benefit Cost Information or Defined Benefit Plan and Other Postretirement Benefit Plan

Summarized financial information about postretirement plans, excluding defined contribution retirement plans, is presented below:

	Pension Benefits						Other Benefits
	Year Ended December 31
	2015			2014			2015			2014
Change in Benefit Obligation
Benefit obligation at beginning of year	$	6,860		$	6,164		$	788		$	761
Service cost	38			46			12			13
Interest cost	187			279			32			35
Actuarial loss (gain)	(150		)	986			(53		)	39
Currency and other	(139		)	(207		)	(8		)	(4		)
Benefit payments from plans	(235		)	(356		)	—			—
Direct benefit payments	(12		)	(10		)	(54		)	(56		)
Settlements	(2,590		)	(42		)	—			—
Benefit obligation at end of year	3,959			6,860			717			788
Change in Plan Assets
Fair value of plan assets at beginning of year	5,914			5,567			—			—
Actual return on plan assets	54			694			—			—
Employer contributions	484			185			—			—
Currency and other	(119		)	(142		)	—			—
Benefit payments	(235		)	(356		)	—			—
Settlements	(2,590		)	(34		)	—			—
Fair value of plan assets at end of year	3,508			5,914			—			—
Funded Status	$	(451	)	$	(946	)	$	(717	)	$	(788	)
Amounts Recognized in the Balance Sheet
Noncurrent asset - prepaid benefit cost	$	16		$	6		$	—		$	—
Current liability - accrued benefit cost	(11		)	(13		)	(50		)	(51		)
Noncurrent liability - accrued benefit cost	(456		)	(939		)	(667		)	(737		)
Net amount recognized	$	(451	)	$	(946	)	$	(717	)	$	(788	)

Principal Plans and all Other Pension Plans

	Principal Plans				All Other Pension Plans				Total
	Year Ended December 31
	2015		2014		2015		2014		2015		2014
Projected benefit obligation (“PBO”)	$	3,295	$	6,312	$	664	$	548	$	3,959	$	6,860
Accumulated benefit obligation (“ABO”)	3,253		6,221		594		475		3,847		6,696
Fair value of plan assets	3,019		5,559		489		355		3,508		5,914

Pension Plans with an ABO in Excess of Plan Assets

	December 31
	2015		2014
PBO	$	2,115	$	4,983
ABO	2,096		4,908
Fair value of plan assets	1,696		4,111

Components of Net Periodic Benefit Cost

	Pension Benefits									Other Benefits
	Year Ended December 31
	2015			2014			2013			2015			2014			2013
Service cost	$	38		$	46		$	53		$	12		$	13		$	17
Interest cost	187			279			257			32			35			32
Expected return on plan assets(a)	(215		)	(332		)	(331		)	—			—			—
Recognized net actuarial loss	75			100			120			—			—			3
Curtailments	—			—			(32		)	—			—			—
Settlements	1,357			20			1			—			—			—
Other	(10		)	(3		)	1			(1		)	(1		)	(2		)
Net periodic benefit cost	$	1,432		$	110		$	69		$	43		$	47		$	50

^(a)  The expected return on plan assets is determined by multiplying the fair value of plan assets at the remeasurement date, typically the prior year-end adjusted for estimated current year cash benefit payments and contributions, by the expected long-term rate of return.

Weighted-Average Assumptions Used to Determine Net Cost

	Pension Benefits								Other Benefits
	Projected 2016		2015		2014		2013		2015		2014		2013
Discount rate	3.91	%	3.86	%	4.66	%	4.04	%	4.28	%	4.97	%	3.97	%
Expected long-term return on plan assets	4.84	%	5.21	%	5.98	%	6.26	%	—		—		—
Rate of compensation increase	2.32	%	2.63	%	2.67	%	2.73	%	—		—		—

Weighted-Average Assumptions Used to Determine Benefit Obligations

	Pension Benefits				Other Benefits
	2015		2014		2015		2014
Discount rate	3.91	%	3.83	%	4.59	%	4.28	%
Rate of compensation increase	2.32	%	2.63	%	—		—

Pension Plan Assets of the Principal Plans Measured at Fair Value

	Fair Value Measurements at December 31, 2015
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and Cash Equivalents
Held directly	$	14	$	12	$	2	$	—
Held through mutual and pooled funds	34		—		34		—
Fixed Income
Held directly
U.S. government and municipals	157		141		16		—
U.S. corporate debt	21		—		21		—
Held through mutual and pooled funds
U.S. government and municipals	149		—		149		—
U.S. corporate debt	623		—		623		—
International bonds	1,236		—		1,236		—
Equity
Held directly
U.S. equity	58		58		—		—
International equity	30		30		—		—
Held through mutual and pooled funds
Non-U.S. equity	67		—		67		—
Global equity	630		—		630		—
Total Plan Assets	$	3,019	$	241	$	2,778	$	—

For the U.S. pension plan, Treasury futures contracts are used when appropriate to manage duration targets.  As of December 31, 2015, the U.S. plan had Treasury futures contracts in place with a total notional value of approximately $15 and an insignificant fair value.

	Fair Value Measurements at December 31, 2014
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and Cash Equivalents
Held directly	$	28	$	28	$	—	$	—
Held through mutual and pooled funds	175		9		166		—
Fixed Income
Held directly
U.S. government and municipals	252		71		181		—
U.S. corporate debt	2,167		—		2,167		—
U.S. securitized fixed income	6		—		6		—
Held through mutual and pooled funds
U.S. corporate debt	149		—		149		—
International bonds	1,438		—		1,438		—
Multi-sector	1		1		—		—
Equity
Held directly
U.S. equity	18		18		—		—
Held through mutual and pooled funds
U.S. equity	4		4		—		—
Non-U.S. equity	106		1		105		—
Global equity	1,186		—		1,186		—
Other	29		29		—		—
Total Plan Assets	$	5,559	$	161	$	5,398	$	—

Estimated Future Benefit Payments

	Pension Benefits		Other Benefits
2016	$	217	$	51
2017	234		53
2018	238		54
2019	242		56
2020	251		58
2021-2025	1,284		291