Annual report pursuant to Section 13 and 15(d)

Detail of Certain Balance Sheet Accounts - Additional Information (Detail)

v3.20.4
Detail of Certain Balance Sheet Accounts - Additional Information (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]    
Deferred compensation plan assets $ 43.8 $ 38.9
Total deferred tax assets 96.0 79.3
Deferred compensation plan liabilities 72.3 62.4
Deferred income tax liabilities $ 39.3 $ 21.4