Leases - Summary of Lease Balances (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jul. 01, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 346,273	$ 354,317
Operating lease liabilities, current	69,715
Operating lease liabilities, noncurrent	324,601	$ 331,761
Operating lease liabilities	$ 394,316