Annual report pursuant to Section 13 and 15(d)

Leases (Narrative) (Details)

v3.6.0.2
Leases (Narrative) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Operating Leased Assets [Line Items]      
Capital Leased Assets, Gross   $ 3.6  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation   0.4  
Number of real estate leases 44    
Number Of Service Center Locations 226    
Aggregate expense under operating leases $ 13.8 $ 15.2 $ 16.5