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Leases - Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Assets    
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] us-gaap:OtherAssets us-gaap:OtherAssets
Operating $ 1,001,608 $ 1,020,352
Financing 117,117 117,805
Total leased assets $ 1,118,725 $ 1,138,157
Current:    
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Other current liabilities Other current liabilities
Operating $ 216,879 $ 208,526
Financing $ 36,232 $ 39,298
Non-current:    
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other liabilities Other liabilities
Operating $ 1,071,499 $ 1,116,795
Financing 80,376 78,881
Total lease liabilities $ 1,404,986 $ 1,443,500