Fair Value Measurement - Summary of Investments Measured at Fair Value on Recurring Basis (Parenthetical) (Detail) - USD ($) $ in Millions |
Sep. 30, 2020 |
Dec. 31, 2019 |
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| Fair Value Disclosures [Abstract] | ||
| Restricted cash | $ 94.4 | $ 197.0 |
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- References No definition available.
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- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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