Aggregate Scheduled Maturities of Debt Outstanding (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
2021	$ 332,081
2022	107,587
2023	1,707,918
2024	8,284
2025	472,371
Later	1,246,203
Total debt before unamortized financing costs	3,874,444	$ 4,000,954
Less-Unamortized financing costs	(18,193)	(16,827)
Total debt after unamortized financing costs	$ 3,856,251	$ 3,984,127

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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