Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Summary of Investments Measured at Fair Value on Recurring Basis (Parenthetical) (Detail)

v3.10.0.1
Fair Value Measurement - Summary of Investments Measured at Fair Value on Recurring Basis (Parenthetical) (Detail)
$ in Millions
Sep. 30, 2018
USD ($)
Fair Value Disclosures [Abstract]  
Restricted cash $ 70.0