Commitments and Contingencies - Schedule of Principal Debt Repayments Footnotes (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Amortization percentage	1.00%
Securitized debt obligations excluded from contractual obligations	$ 2,900.0
Nonconsolidated securitized debt excluded from contractual obligations	1,500.0
Non-consolidated senior interests excluded from contractual obligations	$ 300.1