Segment and Geographic Information Segment and Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 958.4	$ 971.6	$ 1,004.0	$ 969.1	$ 939.5	$ 950.8	$ 946.9	$ 858.8	$ 3,903.1	$ 3,696.0	$ 3,207.3
Long-lived assets	1,704.9				1,732.1				1,704.9	1,732.1	1,667.3
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									2,121.9	2,073.6	1,682.0
Long-lived assets	824.0				867.1				824.0	867.1	827.9
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									119.3	64.6	74.4
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,060.2	1,055.5	865.6
Long-lived assets	522.6				513.2				522.6	513.2	469.3
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									106.6	156.5	201.1
Long-lived assets	48.5				80.5				48.5	80.5	100.2
CHINA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									185.5	71.3	34.4
Long-lived assets	85.8				59.8				85.8	59.8	63.8
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									185.2	167.3	220.8
Long-lived assets	103.7				117.5				103.7	117.5	112.9
Europe and other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									124.4	107.2	129.0
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 120.3				$ 94.0				$ 120.3	$ 94.0	$ 93.2