Quarterly report pursuant to Section 13 or 15(d)

Our Portfolio - Schedule of Equity Method Investments (Parenthetical) (Detail)

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Our Portfolio - Schedule of Equity Method Investments (Parenthetical) (Detail)
$ in Millions
1 Months Ended
Jun. 30, 2017
USD ($)
JP Morgan [Member]  
Schedule of Equity Method Investments [Line Items]  
Acquisition of remaining interest in holding company $ 22