Quarterly report pursuant to Section 13 or 15(d)

Nonrecourse Debt - Schedule of Outstanding Nonrecourse Asset-Backed Debt and Bank Loans (Parenthetical) (Detail)

v3.7.0.1
Nonrecourse Debt - Schedule of Outstanding Nonrecourse Asset-Backed Debt and Bank Loans (Parenthetical) (Detail) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Asset-Backed Nonrecourse Debt Agreement [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Total collateral pledged against our nonrecourse debt $ 1,269 $ 864