Employee Benefit Plans - Schedule of Plan Assets Measured at Fair Value (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	$ 131	$ 113
Common/collective trusts measured at net asset value ("NAV")	229	199
Plan assets measured at fair value, Total	360	312
United States [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	131	113
Plan assets measured at fair value, Total	131	113
United States [Member] | Domestic Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	37	32
United States [Member] | Domestic Equities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	37	32
United States [Member] | International Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	23	20
United States [Member] | International Equities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	23	20
United States [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	53	46
United States [Member] | Corporate Bonds [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	53	46
United States [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	18	15
United States [Member] | Real Estate [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	18	15
Non-United States Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	295	267
Common/collective trusts measured at net asset value ("NAV")	96	81
Plan assets measured at fair value, Total	391	348
Non-United States Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	2	2
Plan assets measured at fair value, Total	2	2
Non-United States Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	293	265
Plan assets measured at fair value, Total	293	265
Non-United States Plans [Member] | International Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	66	57
Non-United States Plans [Member] | International Equities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	66	57
Non-United States Plans [Member] | Debt Issued by National, State or Local Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	57	50
Non-United States Plans [Member] | Debt Issued by National, State or Local Government [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	2	2
Non-United States Plans [Member] | Debt Issued by National, State or Local Government [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	55	48
Non-United States Plans [Member] | Diversified Growth Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	17	14
Non-United States Plans [Member] | Diversified Growth Fund [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	17	14
Non-United States Plans [Member] | Investments Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	7	7
Non-United States Plans [Member] | Investments Funds [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	7	7
Non-United States Plans [Member] | Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	141	133
Non-United States Plans [Member] | Insurance Contracts [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	141	133
Non-United States Plans [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	7	6
Non-United States Plans [Member] | Other [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	$ 7	$ 6