Debt - Long-Term Debt Maturities (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
2021	$ 281,490
2022	539,723
2023	169,316
2024	186,738
2025	188,893
Thereafter	15,215,429
Subtotal	16,581,589
Premiums (discounts), net	6,294
Debt issuance costs, net	(84,425)
Total	16,503,458	$ 16,849,076
Credit Facilities [Member]
Debt Instrument [Line Items]
2021	0
2022	0
2023	0
2024	53,250
2025	0
Thereafter	0
Subtotal	53,250
Premiums (discounts), net	0
Debt issuance costs, net	0
Total	53,250	171,794
Senior Notes [Member]
Debt Instrument [Line Items]
2021	0
2022	527,625
2023	0
2024	0
2025	45,127
Thereafter	13,931,343
Subtotal	14,504,095
Premiums (discounts), net	6,070
Debt issuance costs, net	(76,297)
Total	14,433,868	14,275,870
Term Loans and Unsecured Other [Member]
Debt Instrument [Line Items]
2021	260,135
2022	0
2023	135,244
2024	0
2025	0
Thereafter	1,281,618
Subtotal	1,676,997
Premiums (discounts), net	0
Debt issuance costs, net	(6,441)
Total	1,670,556	1,764,311
Secured Mortgage [Member]
Debt Instrument [Line Items]
2021	21,355
2022	12,098
2023	34,072
2024	133,488
2025	143,766
Thereafter	2,468
Subtotal	347,247
Premiums (discounts), net	224
Debt issuance costs, net	(1,687)
Total	$ 345,784	$ 637,101

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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