Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 59,818	$ 56,102
Operating cash flows from finance leases	2,352	966
Financing cash flows from finance leases	1,589	1,267
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	12,322	$ 37,780
Finance leases	$ 7,690