Schedule of Maturity of Lease Liabilities by Lease Classification (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating Leases, 2019	$ 141,043
Operating Leases, 2020	275,089
Operating Leases, 2021	257,560
Operating Leases, 2022	227,987
Operating Leases, 2023	196,942
Operating Leases, After 2023	697,076
Operating Leases, Total lease payments	1,795,697
Operating Leases, Less: Interest	306,038
Operating Leases, Present value of lease liabilities	1,489,659
Finance Leases, 2019	11,150
Finance Leases, 2020	22,373
Finance Leases, 2021	18,661
Finance Leases, 2022	17,925
Finance Leases, 2023	17,236
Finance Leases, After 2023	101,109
Finance Leases, Total lease payments	188,454
Finance Leases, Less: Interest	42,910
Finance Leases, Present value of lease liabilities	145,544
Total Leases, 2019	152,193
Total Leases, 2020	297,462
Total Leases, 2021	276,221
Total Leases, 2022	245,912
Total Leases, 2023	214,178
Total Leases, After 2023	798,185
Toatal Leases, Total lease payments	1,984,151
Total Leases, Less: Interest	348,948
Total Leases, Present value of lease liabilities	$ 1,635,203