XML 60 R49.htm IDEA: XBRL DOCUMENT v3.21.2
Other Assets and Intangibles, net - Components of Other Assets and Intangibles (Parenthetical) (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Intangible Assets Net Excluding Goodwill [Abstract]        
Amortization expense $ 5.3 $ 3.2 $ 16.3 $ 10.3