Summary of Significant Accounting Policies - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015 USD ($) Segment	Dec. 31, 2014 USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets attributable to consolidated VIEs		$ 0
Liabilities attributable to consolidated VIEs		$ 0
Income accrual, description	Income accrual is generally suspended for loans at the earlier of the date at which payments become 90 days past due or when, in the opinion of our Manager, recovery of income and principal becomes doubtful.
Cash and cash equivalents, description	Cash and cash equivalents represent cash held in banks, cash on hand, and liquid investments with original maturities of three months or less.
Number of operating segment | Segment	2
General Electrical Capital Corporation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Purchase price of Loan Portfolio	$ 4,700,000,000
Cash and Cash Equivalents [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Expected loss	$ 0