Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 56,102	$ 52,036
Operating cash flows from finance leases	966	1,108
Financing cash flows from finance leases	1,267	907
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$ 37,780	$ 359,329