Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Detail of Certain Balance Sheet Accounts - Additional Information (Detail) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]    
Deferred compensation plan assets $ 34.6 $ 31.2
Deferred tax assets 79.1 79.1
Deferred compensation plan liabilities 57.2 51.3
Deferred income tax liabilities $ 7.4 $ 7.5