Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 employee labor_union	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]
Finalization of severance agreements, number of labor unions	2
Employee termination costs, number of employees	350
Employee termination benefits	$ 32.8
Other expense	6.7
Restructuring Reserve [Roll Forward]
Provision	39.5	0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Expected employee termination benefit costs to be incurred	26.0
Expected employee termination benefit costs to be incurred, period of recognition	2 years
Restructuring Reserve [Roll Forward]
Balance at December 31, 2013	11.2
Provision	32.8
Cash payments	(2.8)
Translation adjustment	0
Balance at March 31, 2014	41.2
Employee Severance [Member] | Drivetrain [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2013	8.4
Provision	32.1
Cash payments	(1.2)
Translation adjustment	0
Balance at March 31, 2014	39.3
Employee Severance [Member] | Engine [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2013	2.8
Provision	0.7
Cash payments	(1.6)
Translation adjustment	0
Balance at March 31, 2014	$ 1.9