Leases - Summary of Lease Balances (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 374,310	$ 330,767
Operating lease liabilities, current	60,175	67,549
Operating lease liabilities, noncurrent	376,039	309,680
Operating lease liabilities	$ 436,214	$ 377,229