Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans (Details)

v3.6.0.2
Employee Benefit Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]      
Company contributions $ 28.9 $ 30.3 $ 26.4
Deferred Compensation Liability, Current and Noncurrent 53.8 48.7  
Deferred compensation plan amounts owed $ 51.0 $ 44.5