Employee Benefit Plans Change in Benefit Obligation and Plan Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets, aggregate accumulated benefit obligation	$ 612.6
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets, aggregate projected benefit obligation	621.3
Defined benefit plan, pension plans with accumulated benefit obligations in excess of plan assets, aggregate fair value of plan assets	570.1
Special and contractual termination benefits		28.7
Fair value of plan assets at beginning of year	695.4
Fair value of plan assets at end of year	713.4	695.4
Pension Contributions in Excess of Statutory Minimums	114.7
Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	3.4	3.1	4.8
Interest cost	33.8	35.1	37.1
Plan amendments		6.1
Special and contractual termination benefits	0	12.8	0
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.4	0.4	0.9
Interest cost	13.2	15.1	17.1
Special and contractual termination benefits	0	16.2	0
Settlements		4.7
Change in Benefit Obligation [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of year	842.8	716.7
Service cost	3.4	3.1
Interest cost	33.8	35.1
Plan amendments	0	6.1
Actuarial loss (gain)	(92.6)	97.3
Change in GM portion of OPEB obligation	0	0
Participant contributions	0.4	0.5
Special and contractual termination benefits	0	12.8
Settlements	0	0
Benefit payments	(35.3)	(34.2)
Currency fluctuations	2.9	5.4
Net change	(87.4)	126.1
Benefit obligation at end of year	755.4	842.8
Benefit payments	(35.3)	(34.2)
Change in Benefit Obligation [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of year	601.3	588.4
Service cost	0.4	0.4
Interest cost	13.2	15.1
Plan amendments	(8.1)	0
Actuarial loss (gain)	(0.7)	(7.1)
Change in GM portion of OPEB obligation	(17.0)	2.4
Participant contributions	0	0
Special and contractual termination benefits	0	18.3
Settlements	0	(4.7)
Benefit payments	(11.2)	(11.5)
Currency fluctuations	0	0
Net change	(23.4)	12.9
Benefit obligation at end of year	577.9	601.3
Benefit payments	(11.2)	(11.5)
Change in Plan Assets [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Participant contributions	0.4	0.5
Benefit payments	(35.3)	(34.2)
Fair value of plan assets at beginning of year	695.4	441.7
Actual return on plan assets	49.2	57.3
Employer contributions	0.8	225.4
Benefit payments	(35.3)	(34.2)
Currency fluctuations	2.9	4.7
Net change	18.0	253.7
Fair value of plan assets at end of year	713.4	695.4
Change in Plan Assets [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Participant contributions	0	0
Benefit payments	(11.2)	(11.5)
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	11.2	11.5
Benefit payments	(11.2)	(11.5)
Currency fluctuations	0	0
Net change	0	0
Fair value of plan assets at end of year	$ 0	$ 0