Benefit Plans - Detail (Details) $ in Millions	1 Months Ended	12 Months Ended
	Apr. 30, 2016 USD ($) item	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
US
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Service cost					$ 8
Interest cost					14
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost					8
Interest cost					14
Expected return on plan assets					(24)
Amortization of actuarial loss					1
Settlement loss					(1)
Net periodic benefit cost/Net postretirement benefit costs				$ 1	(2)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net actuarial loss (gain)				10
Prior service cost				(6)
Amortization of actuarial loss				(1)	(1)
Settlement gain					1
Total recorded in other comprehensive income				3
Net periodic benefit cost/Net postretirement benefit costs				1	(2)
Non-US
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Service cost					4
Interest cost					12
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost					4
Interest cost					12
Expected return on plan assets					(13)
Amortization of actuarial loss					3
Net periodic benefit cost/Net postretirement benefit costs				6	6
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net actuarial loss (gain)				6	(18)
Prior service cost				(1)
Amortization of actuarial loss				(2)	(3)
Total recorded in other comprehensive income				3	(21)
Net periodic benefit cost/Net postretirement benefit costs				6	6
Pension Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Balance at the beginning of the period		$ 603	$ 555
Balance at the end of the period			603	555
Pension Plan | US
Defined Benefit Plan Disclosure [Line Items]
Reduction of benefit obligation				(5)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Balance at the beginning of the period			367	359
Balance at the beginning of the period		393	367
Service cost			6	6
Interest cost			13	14
Benefits paid			(23)	(16)
Actuarial loss (gain)			30	10
Curtailment / settlement / amendments				(6)
Balance at the end of the period			393	367
Defined Benefit Plan, Benefit Obligation, Ending Balance				367	359
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Balance at the beginning of the period		$ 404	368	354
Actual return on plan assets			59	20
Cash contributions to defined benefit pension plan				10
Benefits paid			(23)	(16)
Balance at the end of the period			404	368	$ 354
Funded status			11	1
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current asset			23	12
Current liabilities			(2)	(1)
Non-current liabilities			(10)	(10)
Net asset (liability) recognized			11	1
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net actuarial loss			21	28
Prior service cost			(6)	(6)
Net amount recognized			15	22
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligation			12	11
Accumulated benefit obligation			11	10
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost			6	6
Interest cost			13	14
Expected return on plan assets			(21)	(20)
Amortization of actuarial loss				1
Amortization of prior service credit			(1)
Net periodic benefit cost/Net postretirement benefit costs			(3)	1
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year			1
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net actuarial loss (gain)			(7)
Amortization of prior service credit			1
Total recorded in other comprehensive income			(6)
Net periodic benefit cost/Net postretirement benefit costs			$ (3)	$ 1
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate (as a percent)			3.70%	4.30%
Rate of compensation increase (as a percent)			4.42%	4.54%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate (as a percent)			4.30%	4.30%	4.00%
Expected long-term return on plan assets (as a percent)			5.75%	5.75%	7.00%
Rate of compensation increase (as a percent)			4.54%	4.71%	4.31%
Pension Plan | US | Pro Forma
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Expected long-term return on plan assets (as a percent)		5.30%
Pension Plan | US | Minimum
Defined Benefit Plan Disclosure [Line Items]
Percent of base salary, bonus and overtime credited to participating employees' accounts by the Company			3.00%
Pension Plan | US | Maximum
Defined Benefit Plan Disclosure [Line Items]
Percent of base salary, bonus and overtime credited to participating employees' accounts by the Company			10.00%
Pension Plan | Non-US
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Balance at the beginning of the period			$ 223	$ 219
Balance at the beginning of the period		$ 248	223
Service cost			3	3
Interest cost			11	10
Benefits paid			(12)	(15)
Actuarial loss (gain)			7	6
Curtailment / settlement / amendments				(5)
Foreign currency translation			16	5
Balance at the end of the period			248	223
Defined Benefit Plan, Benefit Obligation, Ending Balance				223	$ 219
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Balance at the beginning of the period		$ 235	211	206
Actual return on plan assets			17	11
Cash contributions to defined benefit pension plan			5	7
Benefits paid			(12)	(15)
Plan settlements				(5)
Foreign currency translation			14	7
Balance at the end of the period			235	211	$ 206
Funded status			(13)	(12)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current asset			37	29
Current liabilities			(1)	(1)
Non-current liabilities			(49)	(40)
Net asset (liability) recognized			(13)	(12)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net actuarial loss			55	52
Transition obligation			1	1
Prior service cost			(1)	(1)
Net amount recognized			55	52
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligation			51	43
Accumulated benefit obligation			41	36
Fair value of plan assets			2	2
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost			3	3
Interest cost			11	10
Expected return on plan assets			(10)	(10)
Amortization of actuarial loss			2	2
Settlement loss				1
Net periodic benefit cost/Net postretirement benefit costs			6	6
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year			(2)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net actuarial loss (gain)			(3)
Amortization of actuarial loss			(2)
Total recorded in other comprehensive income			(5)
Net periodic benefit cost/Net postretirement benefit costs			$ 6	$ 6
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate (as a percent)			4.02%	4.34%
Rate of compensation increase (as a percent)			3.58%	3.62%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate (as a percent)			4.34%	4.57%	4.47%
Expected long-term return on plan assets (as a percent)			5.29%	5.41%	6.48%
Rate of compensation increase (as a percent)			3.62%	3.73%	3.76%
Pension Plan | Canadian Plans
Defined Benefit Plan Disclosure [Line Items]
Number of plans amended | item	1
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Settlement loss	$ 1
Settlement/curtailment	$ 5
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Expected long-term return on plan assets (as a percent)			4.76%
Pension Plan | Canadian Plans | Pro Forma
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Expected long-term return on plan assets (as a percent)		3.86%
Postemployment Retirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Balance at the beginning of the period		$ 70	$ 67	$ 64
Service cost			1	1	$ 1
Interest cost			3	2	3
Benefits paid			(4)	(4)
Employee contributions			1
Actuarial loss (gain)			2	2
Foreign currency translation				2
Defined Benefit Plan, Benefit Obligation, Ending Balance			70	67	64
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Funded status			(70)	(67)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Current liabilities			(4)	(4)
Non-current liabilities			(66)	(63)
Net asset (liability) recognized			(70)	(67)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net actuarial loss			11	7
Prior service cost			(6)	(8)
Net amount recognized			5	(1)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost			1	1	1
Interest cost			3	2	3
Amortization of prior service credit			(3)	(2)	(2)
Net periodic benefit cost/Net postretirement benefit costs			1	1	2
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net actuarial loss (gain)			2	2	(2)
Prior service cost					2
Amortization of prior service credit			3	2	2
Total recorded in other comprehensive income			5	4	2
Net periodic benefit cost/Net postretirement benefit costs			1	1	2
Total recorded in other comprehensive income and net periodic benefit cost			$ 6	$ 5	$ 4
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate (as a percent)			4.92%	5.42%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate (as a percent)			5.46%	5.30%	5.70%