Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Detail of Certain Balance Sheet Accounts - Additional Information (Detail) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]    
Deferred compensation plan assets $ 46.7 $ 43.8
Deferred tax assets 90.5 96.0
Deferred compensation plan liabilities 79.9 72.3
Deferred income tax liabilities $ 39.6 $ 39.3