Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 31,043	$ 28,227
Operating cash flows from finance leases	1,184	489
Financing cash flows from finance leases	697	628
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	5,907	$ 29,112
Finance leases	$ 7,690