Commitments and Contingencies - Schedule of Principal Debt Repayments (Detail) $ in Thousands	Jun. 30, 2021 USD ($)
Debt Instrument [Line Items]
2021 (remainder of the year)	$ 143,176
2022	1,017,087
2023	2,349,788
2024	3,489,652
2025	888,387
2026	3,119,432
Thereafter	0
Total Obligation	11,007,522
Secured Debt Agreements[Member]
Debt Instrument [Line Items]
2021 (remainder of the year)	136,307
2022	600,849
2023	1,969,885
2024	3,475,914
2025	721,213
2026	1,825,113
Thereafter	0
Total Obligation	8,729,281
Asset-Specific Agreements [Member]
Debt Instrument [Line Items]
2021 (remainder of the year)	0
2022	0
2023	146,165
2024	0
2025	153,436
2026	0
Thereafter	0
Total Obligation	299,601
Secured Term Loans [Member]
Debt Instrument [Line Items]
2021 (remainder of the year)	6,869
2022	13,738
2023	13,738
2024	13,738
2025	13,738
2026	1,294,319
Thereafter	0
Total Obligation	1,356,140
Convertible Notes [Member]
Debt Instrument [Line Items]
2021 (remainder of the year)	0
2022	402,500
2023	220,000
2024	0
2025	0
2026	0
Thereafter	0
Total Obligation	$ 622,500

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