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Senior Secured Notes and Subordinated Notes (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Borrowing Outstanding	$ 4,139,917	$ 3,471,151
Fair Value	6,630,723	6,536,723
Senior Secured Notes
Debt Instrument [Line Items]
Fair Value	6,519,453	6,476,434
Subordinated Notes
Debt Instrument [Line Items]
Fair Value	111,270	60,289
Non-Consolidated Affiliates Senior Secured Notes
Debt Instrument [Line Items]
Borrowing Outstanding	124,540	114,909
Fair Value	94,818	56,012
Non-Consolidated Affiliates Senior Secured Notes | Senior Secured Notes
Debt Instrument [Line Items]
Borrowing Outstanding	42,750	3,250
Fair Value	45,243	3,201
Non-Consolidated Affiliates Senior Secured Notes | Subordinated Notes
Debt Instrument [Line Items]
Borrowing Outstanding	81,790	111,659
Fair Value	$ 49,575	$ 52,811

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value portion of notes payable.

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