Employee Benefit Plans - Individually Significant (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Multiemployer Plans [Line Items]
EIN	73-1309529
Company Contributions	$ 52	$ 47	$ 47
Multiemployer Plan, Total Individually Significant Pension Plans [Member]
Multiemployer Plans [Line Items]
Company Contributions	36	33	31
Automotive Industries Pension Plan [Member]
Multiemployer Plans [Line Items]
Company Contributions	1	1	1
Suburban Teamsters of Northern Illinois Pension Plan [Member]
Multiemployer Plans [Line Items]
Company Contributions	3	3	3
Western Conference of Teamsters Pension Plan [Member]
Multiemployer Plans [Line Items]
Company Contributions	32	29	27
Multiemployer Plan, Aggregate Individually Insignificant Pension Plans [Member]
Multiemployer Plans [Line Items]
Company Contributions	$ 16	$ 14	$ 16