Leases - Schedule of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Lessee Lease Description [Line Items]
2019, remainder	$ 56,860
2020	118,030
2021	90,359
2022	63,460
2023	37,809
Thereafter	103,468
Total minimum lease payments	469,986
Less: amount of lease payments representing interest	(82,364)
Total operating lease liabilities	387,622	$ 314,100
Less: current obligations under leases	(92,458)
Operating lease liabilities	295,164
Real Estate Lease
Lessee Lease Description [Line Items]
2019, remainder	28,541
2020	60,100
2021	58,083
2022	52,769
2023	37,809
Thereafter	103,468
Total minimum lease payments	340,770
Less: amount of lease payments representing interest	(72,970)
Total operating lease liabilities	267,800
Less: current obligations under leases	(36,538)
Operating lease liabilities	231,262
Express Drive Partner Program
Lessee Lease Description [Line Items]
2019, remainder	28,319
2020	57,930
2021	32,276
2022	10,691
Total minimum lease payments	129,216
Less: amount of lease payments representing interest	(9,394)
Total operating lease liabilities	119,822
Less: current obligations under leases	(55,920)
Operating lease liabilities	$ 63,902