Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of amounts recognized in the consolidated balance sheets

	U.S. Plans				Non-U.S. Plans
(in millions)	2017		2016		2017		2016
Non-current asset	$	23	$	12	$	37	$	29
Current liabilities		(2)		(1)		(1)		(1)
Non-current liabilities		(10)		(10)		(49)		(40)
Net asset (liability) recognized	$	11	$	1	$	(13)	$	(12)

Schedule of amounts recognized in accumulated other comprehensive loss

	U.S. Plans				Non-U.S. Plans
(in millions)	2017		2016		2017		2016
Net actuarial loss	$	21	$	28	$	55	$	52
Transition obligation		—		—		1		1
Prior service credit		(6)		(6)		(1)		(1)
Net amount recognized	$	15	$	22	$	55	$	52

Schedule of plan obligations and assets for plans with an accumulated benefit obligation in excess of plan assets

	U.S. Plans				Non-U.S. Plans
(in millions)	2017		2016		2017		2016
Projected benefit obligation	$	12	$	11	$	51	$	43
Accumulated benefit obligation		11		10		41		36
Fair value of plan assets		—		—		2		2

Components of net periodic benefit cost

	Year Ended December 31,
	U.S. Plans						Non-U.S. Plans
(in millions)	2017		2016		2015		2017		2016		2015
Service cost	$	6	$	6	$	8	$	3	$	3	$	4
Interest cost		13		14		14		11		10		12
Expected return on plan assets		(21)		(20)		(24)		(10)		(10)		(13)
Amortization of actuarial loss		—		1		1		2		2		3
Amortization of prior service credit		(1)		—		—		—		—		—
Settlement loss		—		—		(1)		—		1		—
Net periodic benefit cost	$	(3)	$	1	$	(2)	$	6	$	6	$	6

Schedule of amounts recorded in other comprehensive income and net periodic benefit cost

(in millions, pre-tax)	U.S. Plans						Non-U.S. Plans
	2017		2016		2015		2017		2016		2015
Net actuarial (gain) loss	$	(7)	$	10	$	—	$	(3)	$	6	$	(18)
Prior service credit		—		(6)		—		—		(1)		—
Amortization of actuarial loss		—		(1)		(1)		(2)		(2)		(3)
Amortization of prior service credit		1		—		—		—		—		—
Settlement gain		—		—		1		—		—		—
Total recorded in other comprehensive income		(6)		3		—		(5)		3		(21)
Net periodic benefit cost		(3)		1		(2)		6		6		6
Total recorded in other comprehensive income and net periodic benefit cost	$	(9)	$	4	$	(2)	$	1	$	9	$	(15)

Schedule of weighted average assumptions used to determine the company's obligations

	U.S. Plans				Non-U.S. Plans
	2017		2016		2017		2016
Discount rate	3.70	%	4.30	%	4.02	%	4.34	%
Rate of compensation increase	4.42		4.54		3.58		3.62

Schedule of weighted average assumptions used to determine the company's net periodic benefit cost

	U.S. Plans						Non-U.S. Plans
	2017		2016		2015		2017		2016		2015
Discount rate	4.30	%	4.30	%	4.00	%	4.34	%	4.57	%	4.47	%
Expected long-term return on plan assets	5.75		5.75		7.00		5.29		5.41		6.48
Rate of compensation increase	4.54		4.71		4.31		3.62		3.73		3.76

Schedule of weighted average asset allocation

	U.S. Plans				Non-U.S. Plans
Asset Category	2017		2016		2017		2016
Equity securities	26	%	38	%	39	%	41	%
Debt securities	73		61		46		44
Cash and other	1		1		15		15
Total	100	%	100	%	100	%	100	%

Schedule of fair values of the company's plan assets, by asset category and level

	Fair Value Measurements at December 31, 2017
(in millions)	Level 1		Level 2		Level 3		Total
U.S. Plans:
Equity index:
U.S. (a)	$	—	$	51	$	—	$	51
International (b)		—		55		—		55
Fixed income index:
Long bond  (c)		—		273		—		273
Long government bond (d)		—		21		—		21
Cash  (e)		—		4		—		4
Total U.S. Plans	$	—	$	404	$	—	$	404
Non-U.S. Plans:
Equity index:
U.S. (a)	$	—	$	12	$	—	$	12
Canada (f)		—		22		—		22
International (b)		—		52		—		52
Real estate (g)		—		5		—		5
Fixed income index:
Intermediate bond (h)		—		25		—		25
Long bond (i)		—		84		—		84
Other (j)		—		24		—		24
Cash (e)		2		9		—		11
Total Non-U.S. Plans	$	2	$	233	$	—	$	235

	Fair Value Measurements at December 31, 2016
(in millions)	Level 1		Level 2		Level 3		Total
U.S. Plans:
Equity index:
U.S. (a)	$	—	$	70	$	—	$	70
International (b)		—		68		—		68
Fixed income index:
Long bond  (c)		—		227		—		227
Cash  (e)		—		3		—		3
Total U.S. Plans	$	—	$	368	$	—	$	368
Non-U.S. Plans:
Equity index:
U.S. (a)	$	—	$	11	$	—	$	11
Canada (f)		—		21		—		21
International (b)		—		49		—		49
Real estate (g)		—		5		—		5
Fixed income index:
Intermediate bond (h)		—		21		—		21
Long bond (i)		—		72		—		72
Other (j)		—		23		—		23
Cash (e)		1		8		—		9
Total Non-U.S. Plans	$	1	$	210	$	—	$	211

(a) This category consists of both passively and actively managed equity index funds that track the return of large capitalization U.S. equities.

(b) This category consists of both passively and actively managed equity index funds that track an index of returns on international developed market equities as well as infrastructure assets.

(c) This category consists of an actively managed fixed income index fund that invests in a diversified portfolio of fixed-income corporate securities with maturities generally exceeding 10 years.

(d) This category consists of an actively managed fixed income index fund that invests in a diversified portfolio of fixed-income U.S. treasury securities with maturities generally exceeding 10 years.

(e) This category represents cash or cash equivalents.

(f) This category consists of an actively managed equity index fund that tracks against an index of large capitalization Canadian equities.

(g) This category consists of an actively managed equity index fund that tracks against real estate investment trusts and real estate operating companies.

(h) This category consists of both passively and actively managed fixed income index funds that track the return of intermediate duration government and investment grade corporate bonds.

(i) This category consists of both passively and actively managed fixed income index funds that track the return of Canada government bonds, investment grade corporate bonds and hedge funds.

(j) This category mainly consists of investment products provided by an insurance company that offers returns that are subject to a minimum guarantee and mutual funds.

Schedule of benefit payments, which reflect anticipated future service, as appropriate and are expected to be made

(in millions)	U.S. Plans		Non-U.S. Plans
2018	$	21	$	11
2019		20		12
2020		21		12
2021		22		12
2022		23		12
Years 2023 - 2027		124		70

Pension Plan

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of funded status

	U.S. Plans				Non-U.S. Plans
(in millions)	2017		2016		2017		2016
Benefit obligation
At January 1	$	367	$	359	$	223	$	219
Service cost		6		6		3		3
Interest cost		13		14		11		10
Benefits paid		(23)		(16)		(12)		(15)
Actuarial (gain) loss		30		10		7		6
Curtailment/settlement/amendments		—		(6)		—		(5)
Foreign currency translation		—		—		16		5
Benefit obligation at December 31	$	393	$	367	$	248	$	223
Fair value of plan assets
At January 1	$	368	$	354	$	211	$	206
Actual return on plan assets		59		20		17		11
Employer contributions		—		10		5		7
Benefits paid		(23)		(16)		(12)		(15)
Plan settlements		—		—		—		(5)
Foreign currency translation		—		—		14		7
Fair value of plan assets at December 31	$	404	$	368	$	235	$	211
Funded status	$	11	$	1	$	(13)	$	(12)

Postemployment Retirement Benefits

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of funded status

(in millions)	2017		2016
Accumulated postretirement benefit obligation
At January 1	$	67	$	64
Service cost		1		1
Interest cost		3		2
Employee contributions		1		—
Actuarial loss		2		2
Benefits paid		(4)		(4)
Foreign currency translation		—		2
At December 31		70		67
Fair value of plan assets		—		—
Funded status	$	(70)	$	(67)

Schedule of amounts recognized in the consolidated balance sheets

(in millions)	2017		2016
Current liabilities	$	(4)	$	(4)
Non-current liabilities		(66)		(63)
Net liability recognized	$	(70)	$	(67)

Schedule of amounts recognized in accumulated other comprehensive loss

(in millions)	2017		2016
Net actuarial loss	$	11	$	7
Prior service credit		(6)		(8)
Net amount recognized	$	5	$	(1)

Components of net periodic benefit cost

	Year Ended December 31,
(in millions)	2017		2016		2015
Service cost	$	1	$	1	$	1
Interest cost		3		2		3
Amortization of prior service credit		(3)		(2)		(2)
Net periodic benefit cost	$	1	$	1	$	2

Schedule of amounts recorded in other comprehensive income and net periodic benefit cost

(in millions, pre-tax)	2017		2016		2015
Net actuarial loss (gain)	$	2	$	2	$	(2)
Amortization of prior service credit		3		2		2
New prior service credit		—		—		2
Total recorded in other comprehensive income		5		4		2
Net periodic benefit cost		1		1		2
Total recorded in other comprehensive income and net periodic benefit cost	$	6	$	5	$	4

Schedule of weighted average assumptions used to determine the company's obligations

	2017		2016
Discount rate	4.92	%	5.42	%

Schedule of weighted average assumptions used to determine the company's net periodic benefit cost

	2017		2016		2015
Discount rate	5.46	%	5.30	%	5.70	%

Schedule of assumptions made in measuring the company's postretirement benefit obligation

	U.S.		Canada		Brazil
2017 increase in per capita cost	6.50	%	5.54	%	8.41	%
Ultimate trend	4.50	%	4.50	%	8.41	%
Year ultimate trend reached	2037		2031		2017

Sensitivity to Trend Assumptions

(in millions)	2017
One-percentage point increase in trend rates:
- Increase in service cost and interest cost components	$	1
- Increase in year-end benefit obligations		7
One-percentage point decrease in trend rates:
- Decrease in service cost and interest cost components		1
- Decrease in year-end benefit obligations		6

Schedule of benefit payments, which reflect anticipated future service, as appropriate and are expected to be made

(in millions)
2018	$	4
2019		4
2020		4
2021		4
2022		5
Years 2023 - 2027		24