Annual report pursuant to Section 13 and 15(d)

Segment Information - Geographical Information (Details)

v3.10.0.1
Segment Information - Geographical Information (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues $ 404.3 $ 429.9 $ 459.4 $ 471.8 $ 424.9 $ 359.4 $ 374.8 $ 419.5 $ 1,765.4 $ 1,578.6 $ 1,338.3
UNITED STATES                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 1,680.6 1,489.8 1,261.4
Asia Pacific [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 40.7 44.0 37.1
Mexico [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 $ 44.1 $ 44.8 $ 39.8