XML 88 R77.htm IDEA: XBRL DOCUMENT v3.21.2
Supplemental Disclosures of Cash Flow Information - Cash Equivalents And Restricted Cash (Detail) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Cash And Cash Equivalents [Abstract]      
Cash and cash equivalents $ 2,735.1 $ 664.6 $ 629.9
Restricted cash 3,277.2 $ 2,909.7 2,844.9
Total cash, cash equivalents and restricted cash $ 6,012.3   $ 3,474.8