Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.21.2
Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]        
Income taxes $ 34.3 $ 33.6 $ 104.2 $ 104.4
Effective income tax rate 22.60% 19.50% 20.30% 25.90%
Total amount of unrecognized tax benefits, including related interest and penalties $ 76.8   $ 76.8  
Unrecognized tax benefits excluding interest and penalties that if recognized would affect the effective tax rate 53.5   53.5  
Total accrued interest for tax contingencies 15.0   15.0  
Total accrued penalties for tax contingencies 2.5   2.5  
Amount of unrecognized tax benefits that could decrease within the next 12 months $ 9.1   $ 9.1