Impairment and Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Impairment and Restructuring Charges for the Mobile Segment
Impairment charges									$ 3.9	$ 3.3	$ 98.9
Severance expense and related benefit costs		$ 3.3		$ 7.7	$ 4.3			$ 0.4	15.3	7.7	10.7
Exit costs		0.8		0.2	0.1			3.1	2.5	3.7	3.8
Total	$ 3.0	$ 5.3	$ 2.9	$ 10.5	$ 2.7	$ 4.4	$ 1.4	$ 6.2	21.7	14.7	113.4
Mobile Industries [Member]
Impairment and Restructuring Charges for the Mobile Segment
Impairment charges									3.9	0.1	98.2
Severance expense and related benefit costs									9.3	4.5	9.3
Exit costs									1.8	0.8	2.0
Total									15.0	5.4	109.5
Process Industries [Member]
Impairment and Restructuring Charges for the Mobile Segment
Impairment charges									0.0	3.2	0.3
Severance expense and related benefit costs									6.0	2.6	1.4
Exit costs									0.7	2.9	1.8
Total									6.7	8.7	3.5
Corporate Segment [Member]
Impairment and Restructuring Charges for the Mobile Segment
Impairment charges									0.0	0.0	0.4
Severance expense and related benefit costs									0.0	0.6	0.0
Exit costs									0.0	0.0	0.0
Total									$ 0.0	$ 0.6	$ 0.4