Secured Debt, Net - Schedule of Secured Credit Facilities (Detail) - Secured Debt [Member] $ in Thousands	9 Months Ended
Sep. 30, 2021 USD ($) Countries
Schedule Of Secured Credit Facilities [Line Items]
Lenders \| Countries	12
Borrowings \| $	$ 11,188,855
Wtd Avg. Maturity	Feb. 17, 2025
Loan Count \| Countries	141
Collateral \| $	$ 15,258,991
Wtd Avg. Maturity	Feb. 10, 2025
Recourse Limitation Wtd. Avg.	32.00%
Minimum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	25.00%
Maximum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	100.00%
USD [Member]
Schedule Of Secured Credit Facilities [Line Items]
Lenders \| Countries	12
Borrowings \| $	$ 7,022,125
Wtd Avg. Maturity	May 05, 2025
Loan Count \| Countries	114
Collateral \| $	$ 9,557,168
Wtd Avg. Maturity	May 01, 2025
Recourse Limitation Wtd. Avg.	29.00%
USD [Member] \| Minimum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	25.00%
USD [Member] \| Maximum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	100.00%
EUR [Member]
Schedule Of Secured Credit Facilities [Line Items]
Lenders \| Countries	6
Borrowings \| $	$ 2,369,013
Wtd Avg. Maturity	Jul. 26, 2024
Loan Count \| Countries	10
Collateral \| $	$ 3,150,165
Wtd Avg. Maturity	Jul. 04, 2024
Recourse Limitation Wtd. Avg.	48.00%
EUR [Member] \| Minimum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	25.00%
EUR [Member] \| Maximum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	100.00%
GBP [Member]
Schedule Of Secured Credit Facilities [Line Items]
Lenders \| Countries	6
Borrowings \| $	$ 1,163,414
Wtd Avg. Maturity	Oct. 22, 2024
Loan Count \| Countries	12
Collateral \| $	$ 1,739,121
Wtd Avg. Maturity	Nov. 09, 2024
Recourse Limitation Wtd. Avg.	26.00%
GBP [Member] \| Minimum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	25.00%
GBP [Member] \| Maximum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	50.00%
Other Currencies [Member]
Schedule Of Secured Credit Facilities [Line Items]
Lenders \| Countries	4
Borrowings \| $	$ 634,303
Wtd Avg. Maturity	Jun. 17, 2025
Loan Count \| Countries	5
Collateral \| $	$ 812,537
Wtd Avg. Maturity	May 28, 2025
Recourse Limitation Wtd. Avg.	27.00%
Other Currencies [Member] \| Minimum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	25.00%
Other Currencies [Member] \| Maximum [Member]
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation Range	100.00%

Debt instrument range of recourse limitation.

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- Definition

Debt instrument weighted average recourse limitation.

+ References

No definition available.

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- Definition

Number of lenders.

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No definition available.

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- Definition

Number of loans count.

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- Definition

Schedule Of Secured Credit Facilities [Line Item]

+ References

No definition available.

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- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

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- Definition

Latest date the outstanding debt instruments are required to be repaid, in YYYY-MM-DD format.

+ References

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- Definition

Earliest date the outstanding debt instruments are required to be repaid, in YYYY-MM-DD format.

+ References

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

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