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Pension and Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Components of Pension Expense and Benefits Cost

The components of pension expense were as follows:

U.S. Plans	2017				2016				2015
Service cost	$	14			$	14			$	14
Interest cost	50				50				63
Expected return on plan assets	(83		)		(91		)		(100		)
Settlements	—				14				2
Amortization of actuarial loss	52				50				50
Amortization of prior service cost	1				1				—
Net periodic cost	$	34			$	38			$	29

Non-U.S. Plans	2017				2016				2015
Service cost	$	22			$	21			$	24
Interest cost	75				101				127
Expected return on plan assets	(146		)		(157		)		(172		)
Curtailments	(3		)		—				—
Amortization of actuarial loss	42				50				55
Amortization of prior service credit	(11		)		(12		)		(13		)
Net periodic benefit / (cost)	$	(21	)		$	3			$	21

The components of net postretirement benefits cost were as follows:

Other Postretirement Benefits	2017				2016				2015
Service cost	$	—			$	—			$	1
Interest cost	6				6				7
Amortization of prior service credit	(40		)		(41		)		(37		)
Amortization of actuarial loss	4				5				4
Net periodic benefit credit	$	(30	)		$	(30	)		$	(25	)

Schedule of Projected Benefit Obligations, Accumulated Benefit Obligations, Plan Assets and Funded Status

The projected benefit obligations, accumulated benefit obligations, plan assets and funded status of the Company's U.S. and non-U.S. plans were as follows:

	U.S. Plans								Non-U.S. Plans
	2017				2016				2017				2016
Projected Benefit Obligations
Benefit obligations at January 1	$	1,482			$	1,501			$	3,283			$	3,493
Service cost	14				14				22				21
Interest cost	50				50				75				101
Plan participants’ contributions	—				—				3				3
Amendments	4				3				—				—
Settlements	—				(39		)		(7		)		—
Actuarial loss	51				54				39				382
Benefits paid	(102		)		(101		)		(214		)		(172		)
Foreign currency translation	—				—				306				(545		)
Benefit obligations at December 31	$	1,499			$	1,482			$	3,507			$	3,283
Plan Assets
Fair value of plan assets at January 1	$	1,156			$	1,190			$	3,152			$	3,169
Actual return on plan assets	162				65				134				611
Employer contributions	4				41				290				62
Plan participants’ contributions	—				—				3				3
Settlements	—				(39		)		(7		)		—
Benefits paid	(102		)		(101		)		(214		)		(172		)
Foreign currency translation	—				—				307				(521		)
Fair value of plan assets at December 31	$	1,220			$	1,156			$	3,665			$	3,152
Funded Status	$	(279	)		$	(326	)		$	158			$	(131	)
Accumulated benefit obligations at December 31	$	1,445			$	1,446			$	3,418			$	3,191

Information for Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets

Information for pension plans with accumulated benefit obligations in excess of plan assets was as follows: 

U.S. Plans	2017				2016
Projected benefit obligations	$	1,499			$	1,482
Accumulated benefit obligations	1,445				1,446
Fair value of plan assets	1,220				1,156

Non-U.S. Plans	2017				2016
Projected benefit obligations	$	247			$	224
Accumulated benefit obligations	223				200
Fair value of plan assets	94				85

Schedule of Ranges for Asset Allocation and Summary of Defined Benefit Plan Assets and Accrued Income

The strategic ranges for asset allocation in the U.S. plan are as follows: 

U.S. equities	38	%	to	48	%
International equities	12	%	to	18	%
Fixed income	15	%	to	25	%
Balanced funds	12	%	to	18	%
Real estate	5	%	to	10	%

The strategic ranges for asset allocation in the U.K. plan are as follows:

Investment grade credit	30	%	to	90	%
Equities	0	%	to	30	%
Hedge funds	0	%	to	10	%
Real estate	0	%	to	5	%
Private equity	0	%	to	15	%
Alternative credit	0	%	to	20	%
Other	0	%	to	15	%

The levels assigned to the defined benefit plan assets as of December 31, 2017 and 2016 are summarized in the tables below: 

		2017
		U.S. plan assets				Non-U.S. plan assets				Total
Level 1
Cash and cash equivalents		$	13			$	304			$	317
Global large cap equity		—				34				34
U.S. large cap equity		82				32				114
Global mid/small cap equity		—				10				10
U.S. mid/small cap equity		247				32				279
Mutual funds – global equity		175				—				175
Mutual funds – U.S. equity		225				—				225
Mutual funds – fixed income		93				—				93
		835				412				1,247
Level 2
Government issued debt securities		50				556				606
Corporate debt securities		76				4				80
Asset backed securities		9				—				9
Structured debt		—				904				904
Insurance contracts		—				18				18
Derivatives		—				136				136
Investment funds – fixed income		3				482				485
Investment funds – global equity		—				132				132
		138				2,232				2,370
Level 3
Investment funds – real estate		94				64				158
Hedge funds		—				189				189
Private equity		15				132				147
Real estate – direct		18				6				24
		127				391				518
Total assets in fair value hierarchy		1,100				3,035				4,135
Investments measured at NAV Practical Expedient (a)
Investment funds – fixed income		76				123				199
Investment funds – global equity		19				183				202
Investment funds – emerging markets		24				—				24
Hedge funds		—				251				251
Investment funds – real estate		—				68				68
		119				625				744
Total investments at fair value		$	1,219			$	3,660			$	4,879

		2016
		U.S. plan assets				Non-U.S. plan assets				Total
Level 1
Cash and cash equivalents		$	15			$	83			$	98
Global large cap equity		—				14				14
U.S. large cap equity		60				6				66
Global mid/small cap equity		—				5				5
U.S. mid/small cap equity		238				24				262
Mutual funds – global equity		149				2				151
Mutual funds – U.S. equity		214				—				214
Mutual funds – fixed income		92				—				92
		768				134				902
Level 2
Government issued debt securities		49				514				563
Corporate debt securities		75				61				136
Asset backed securities		11				2				13
Structured debt		—				695				695
Insurance contracts		—				16				16
Derivatives		—				98				98
Investment funds – fixed income		2				496				498
Investment funds – global equity		—				82				82
		137				1,964				2,101
Level 3
Investment funds – real estate		85				47				132
Hedge funds		—				207				207
Private equity		22				193				215
Real estate – direct		17				5				22
		124				452				576
Total assets in fair value hierarchy		1,029				2,550				3,579
Investments measured at NAV Practical Expedient (a)
Investment funds – fixed income		77				110				187
Investment funds – global equity		26				243				269
Investment funds – emerging markets		23				—				23
Hedge funds		—				186				186
Investment funds – real estate		—				57				57
		126				596				722
Total investments at fair value		$	1,155			$	3,146			$	4,301

(a) In accordance with ASU No. 2015-07, certain investments that are measured at fair value using the NAV per share practical expedient have not been classified in the fair value hierarchy.

Accrued income excluded from the tables above was as follows:

	2017				2016
U.S. plan assets	$	1			$	1
Non-U.S. plan assets	5				6

Reconciliation of Plan Assets Using Level 3

The following tables reconcile the beginning and ending balances of plan assets measured using significant unobservable inputs (Level 3).

		Hedge funds				Private equity				Real estate				Total
Balance at January 1, 2016		$	225			$	281			$	136			$	642
Foreign currency translation		(37		)		(42		)		(4		)		(83		)
Asset returns – assets held at reporting date		24				2				10				36
Asset returns – assets sold during the period		1				36				—				37
Purchases, sales and settlements, net		(6		)		(62		)		12				(56		)
Balance at December 31, 2016		207				215				154				576
Foreign currency translation		20				19				5				44
Asset returns – assets held at reporting date		(38		)		(57		)		7				(88		)
Asset returns – assets sold during the period		32				53				—				85
Purchases, sales and settlements, net		(32		)		(83		)		16				(99		)
Balance at December 31, 2017		$	189			$	147			$	182			$	518

Additional Information About Pension Plan Assets Valued Using Net Asset Value

The following table presents additional information about the pension plan assets valued using net asset value as a practical expedient:

	Fair Value			Redemption Frequency	Redemption Notice Period
Balance at December 31, 2017
Investment funds – fixed income	$	199		Daily	1 day
Investment funds – global equity	202			Monthly	1 - 30 days
Investment funds – emerging markets	24			Daily	30 days
Hedge funds	251			Monthly	3 - 45 days
Investment funds – real estate	68			Weekly	2 days
Balance at December 31, 2016
Investment funds – fixed income	$	187		Daily	1 - 15 days
Investment funds – global equity	269			Monthly	1 - 30 days
Investment funds – emerging markets	23			Daily	30 days
Hedge funds	186			Monthly	5 - 45 days
Investment funds – real estate	57			Weekly	2 days

Schedule of Pension Assets and Liabilities

Pension assets and liabilities included in the Consolidated Balance Sheets were: 

		2017				2016
Non-current assets		$	313			$	14
Current liabilities		6				8
Non-current liabilities		434				469

Schedule of Changes in Net Loss and Prior Service Cost/(Credit)

Changes in the net loss and prior service credit for the Company’s postretirement benefit plans were: 

		2017								2016								2015
		Net loss				Prior service				Net loss				Prior service				Net loss				Prior service
Balance at January 1		$	49			$	(182	)		$	47			$	(225	)		$	69			$	(211	)
Reclassification to net periodic benefit cost		(4		)		40				(5		)		41				(4		)		37
Current year loss		4				—				7				—				(18		)		—
Amendments		—				—				—				—				—				(51		)
Foreign currency translation		—				—				—				2				—				—
Balance at December 31		$	49			$	(142	)		$	49			$	(182	)		$	47			$	(225	)

Changes in the net loss and prior service credit for the Company’s pension plans were: 

		2017								2016								2015
		Net loss				Prior service				Net loss				Prior service				Net loss				Prior service
Balance at January 1		$	2,032			$	(32	)		$	2,320			$	(54	)		$	2,423			$	(71	)
Reclassification to net periodic benefit cost		(95		)		14				(114		)		11				(105		)		13
Current year loss/(gain)		21				—				13				—				95				—
Amendments		—				4				—				3				—				—
Foreign currency translation		99				(2		)		(187		)		8				(93		)		4
Balance at December 31		$	2,057			$	(16	)		$	2,032			$	(32	)		$	2,320			$	(54	)

Schedule of Expected Future Benefit Payments

Expected future benefit payments are as follows:

	Benefit Payments
2018	$	14
2019	14
2020	14
2021	13
2022	13
2023 - 2027	56

Expected future benefit payments as of December 31, 2017 are: 

	U.S. plans				Non-U.S. plans
2018	$	102			$	161
2019	107				164
2020	107				167
2021	98				166
2022	100				168
2023 - 2027	491				846

Schedule of Benefit Obligations Weighted Average Actuarial Assumptions

The weighted average actuarial assumptions used to calculate pension expense for each year were: 

U.S. Plans		2017			2016			2015
Discount rate - service cost		4.7	%		4.9	%		4.0	%
Discount rate - interest cost		3.4	%		3.5	%		4.0	%
Compensation increase		4.6	%		4.6	%		4.6	%
Long-term rate of return		7.5	%		8.0	%		8.0	%

Non-U.S. Plans		2017			2016			2015
Discount rate - service cost		2.8	%		3.9	%		3.4	%
Discount rate - interest cost		2.3	%		3.2	%		3.4	%
Compensation increase		3.3	%		2.9	%		2.7	%
Long-term rate of return		4.5	%		5.4	%		5.2	%

The weighted average actuarial assumptions used to calculate the benefit obligations at December 31 were: 

U.S. Plans		2017			2016			2015
Discount rate		3.7	%		4.2	%		4.4	%
Compensation increase		4.7	%		4.6	%		4.6	%

Non-U.S. Plans		2017			2016			2015
Discount rate		2.5	%		2.7	%		3.7	%
Compensation increase		3.2	%		3.3	%		2.9	%

Schedule of Changes in Benefit Obligations

Changes in the benefit obligations were:

		2017				2016
Benefit obligations at January 1		$	167			$	171
Service cost		—				—
Interest cost		6				6
Actuarial loss		4				7
Benefits paid		(13		)		(15		)
Foreign currency translation		4				(2		)
Benefit obligations at December 31		$	168			$	167

Schedule of Assumed Health Care Cost Trend Rates

The assumed health care cost trend rates at December 31, 2017 were as follows: 

Health care cost trend rate assumed for 2018	4.6	%
Rate that the cost trend rate gradually declines to	3.8	%
Year that the rate reaches the rate it is assumed to remain	2035

Schedule of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one-percentage-point change in assumed health care cost trend rates would have the following effects: 

		One percentage point
		Increase				Decrease
Effect on total service and interest cost		$	1			$	1
Effect on postretirement benefit obligation		$	7			$	6

Schedule of Weighted Average Discount Rates Used in Benefit Obligations Calculation

Weighted average discount rates used to calculate the benefit obligations at the end of each year and the cost for each year are presented below. 

	2017			2016			2015
Benefit obligations	3.8	%		4.0	%		3.9	%
Service cost	5.0	%		4.9	%		4.0	%
Interest cost	3.5	%		3.6	%		4.0	%

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Tabular disclosure of the assumed health care cost trend rates for the next year used to measure the expected cost of benefits covered by the plans, including the ultimate trend rate(s) and when that rate is expected to be achieved.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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X

- Definition

Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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X

- Definition

Tabular disclosure of the average discount rate in the country of origin applied to insurance contracts to determine future policy benefits to be paid to or on behalf of policyholders and the methodology and assumptions for calculating the discount rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65670685&loc=d3e14881-158438

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6482852&loc=d3e14931-158439

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