Employee Benefit Plans (Details 6) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net periodic pension/postretirement benefit expense
Total net periodic benefit expense	$ 38.7	$ 35.4	$ 52.2
Domestic Pension Plans
Accumulated benefit obligations in excess of the fair value of plan assets
Projected benefit obligation	1,345.8	1,193.5
Accumulated benefit obligation	1,331.5	1,176.7
Fair value of plan assets	936.8	868.2
Accumulated benefit obligation	1,331.5	1,176.7
Net periodic pension/postretirement benefit expense
Service cost	9.8	9.9	9.3
Interest cost	54.4	57.4	61.1
Expected return on plan assets	(63.4)	(65.6)	(68.4)
Amortization of unrecognized losses	28.5	23.2	36.4
Amortization of unrecognized prior service credits	(0.6)	(0.9)	(0.9)
Curtailment (gain) loss	0.1
Total net periodic benefit expense	28.8	24.0	37.5
Net periodic benefit expense of continuing operations	28.8	24.0	37.5
Amount of reduction to pension expense		20.0
Other changes in plan assets and benefit obligations recognized in other comprehensive income
Current year actuarial loss	126.9
Amortization of actuarial loss	(28.5)
Amortization of prior service credits	0.6
Curtailment gain	(4.0)
Total other changes in plan assets and benefit obligations recognized in other comprehensive loss	95.0
Estimated amounts that will be amortized from accumulated other comprehensive income into net periodic benefit expense in 2013
Net actuarial loss	35.9
Aggregate estimated amounts that will be amortized from accumulated other comprehensive loss into net periodic benefit expense	35.9
Weighted-average actuarial assumptions used in determining net periodic pension expense:
Discount rate (as a percent)	4.69%	5.22%	5.80%
Rate of increase in compensation levels (as a percent)	3.75%	4.00%	4.00%
Expected long-term rate of return on assets (as a percent)	7.25%	7.25%	8.25%
Weighted-average actuarial assumptions used in determining year-end benefit obligations:
Discount rate (as a percent)	3.74%	4.69%	5.22%
Rate of increase in compensation levels (as a percent)	3.75%	3.75%	4.00%
Foreign Pension Plans
Accumulated benefit obligations in excess of the fair value of plan assets
Projected benefit obligation	119.3	112.3
Accumulated benefit obligation	116.4	111.0
Fair value of plan assets	48.5	55.3
Accumulated benefit obligation	314.8	275.3
Net periodic pension/postretirement benefit expense
Service cost	2.5	2.5
Service cost	2.8	2.8	2.3
Interest cost	14.3	14.0
Interest cost	14.6	14.2	14.1
Expected return on plan assets	(16.6)	(16.2)	(14.3)
Amortization of unrecognized losses	1.5	0.9	1.7
Curtailment (gain) loss		(0.1)
Total net periodic benefit expense	2.3	1.6	3.8
Less: Net periodic benefit expense of discontinued operations	(1.2)	(0.7)	(0.3)
Net periodic benefit expense of continuing operations	1.1	0.9	3.5
Other changes in plan assets and benefit obligations recognized in other comprehensive income
Current year actuarial loss	23.6
Amortization of actuarial loss	(1.5)
Foreign exchange and other	2.4
Total other changes in plan assets and benefit obligations recognized in other comprehensive loss	24.5
Estimated amounts that will be amortized from accumulated other comprehensive income into net periodic benefit expense in 2013
Net actuarial loss	2.7
Aggregate estimated amounts that will be amortized from accumulated other comprehensive loss into net periodic benefit expense	2.7
Weighted-average actuarial assumptions used in determining net periodic pension expense:
Discount rate (as a percent)	5.10%	5.42%	5.50%
Rate of increase in compensation levels (as a percent)	3.92%	4.15%	4.10%
Expected long-term rate of return on assets (as a percent)	6.56%	7.00%	7.04%
Weighted-average actuarial assumptions used in determining year-end benefit obligations:
Discount rate (as a percent)	4.35%	5.10%	5.42%
Rate of increase in compensation levels (as a percent)	3.91%	3.92%	4.15%
Postretirement Plans
Net periodic pension/postretirement benefit expense
Service cost	0.5	0.4	0.3
Interest cost	6.1	7.0	8.0
Amortization of unrecognized losses	3.6	4.5	4.2
Amortization of unrecognized prior service credits	(1.4)	(1.4)	(1.3)
Total net periodic benefit expense	8.8	10.5	11.2
Other changes in plan assets and benefit obligations recognized in other comprehensive income
Current year actuarial loss	7.2
Amortization of actuarial loss	(3.6)
Amortization of prior service credits	1.4
Total other changes in plan assets and benefit obligations recognized in other comprehensive loss	5.0
Estimated amounts that will be amortized from accumulated other comprehensive income into net periodic benefit expense in 2013
Net actuarial loss	4.0
Net prior service credits	1.4
Weighted-average actuarial assumptions used in determining net periodic pension expense:
Discount rate (as a percent)	4.36%	4.85%	5.46%
Weighted-average actuarial assumptions used in determining year-end benefit obligations:
Discount rate (as a percent)	3.37%	4.36%	4.85%
Assumed health care cost trend rates:
Heath care cost trend rate for next year (as a percent)	7.13%	7.52%	7.86%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) (as a percent)	5.00%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2019	2019	2019
Effects on postretirement expense of a percentage point change in assumed health care cost trend rates
Effect of 1% increase on total of service and interest costs	0.4
Effect of 1% decrease on total of service and interest costs	(0.3)
Effect of 1% increase on postretirement benefit obligation	9.2
Effect of 1% decrease on postretirement benefit obligation	$ (8.2)