Leases - Summary of Operating Lease Right of use Assets and Lease Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Apr. 01, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 320,227	$ 327,329
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesAndOtherLiabilities
Operating lease liabilities	$ 40,804
Non-current operating lease liabilities	297,867	$ 305,167
Total operating lease liabilities	$ 338,671