Pension Plans and Other Postretirement Benefit Plans (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended				3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012 Pension Plans	Feb. 21, 2012 Pension Plans	Mar. 31, 2012 U.S. qualified pension plans	Mar. 31, 2011 U.S. qualified pension plans	Mar. 31, 2012 Non-U.S. pension plans	Mar. 31, 2011 Non-U.S. pension plans	Mar. 31, 2012 Postretirement Benefits Other Than Pensions	Mar. 31, 2011 Postretirement Benefits Other Than Pensions
Net Periodic Benefit Cost
Service cost					$ 5.5	$ 4.7	$ 2.3	$ 2.2	$ 0.1	$ 0.1
Interest cost					14.2	15.3	5.5	5.6	0.6	0.8
Expected return on plan assets					(15.0)	(16.5)	(3.7)	(4.0)
Amortization of prior service cost					0.2	0.3
Amortization of net deferred actuarial loss					8.6	7.8	1.2	1.1	0.2	0.1
Net periodic benefit cost					13.5	11.6	5.3	4.9	0.9	1.0
Plan contributions and funding
Employer contribution to fund minimum required payments, approved by Bankruptcy Court				26
Accelerated employer contribution to fund minimum required payments, approved by Bankruptcy Court				83
Employer contribution			109
Defined contribution retirement plan
Percentage that the employer contributes of employee contributions under 401(k) plan	100.00%
Maximum percentage of employee compensation match by employer to defined contribution plan	6.00%
Costs related to defined contribution retirement plan	$ 3.4	$ 3.1