Pension Plans and Other Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Funded status of fully funded, underfunded, and unfunded pension plans:
Overfunded defined benefit pension plans	$ 28.3	$ 33.8
Total underfunded and unfunded defined benefit pension plans	(272.7)	(400.6)
Unfunded defined benefit pension plans included in liabilities subject to compromise	(177.9)	(188.1)
Pension liabilities included in other current liabilities	(410.5)
Defined benefit pension plans, projected obligation		1,955
Defined Benefit Plan, Fair Value of Plan Assets, Period Increase (Decrease)	7
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	129
Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Unfunded defined benefit pension plans included in liabilities subject to compromise	(123.8)	(128.5)
Pension liabilities included in other current liabilities	(14.0)	(14.0)
Net funded status	(382.2)	(509.3)
Non-U.S. pension plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Percentage of defined benefit plan obligation represented by specified group of countries		90.00%
Postretirement Benefits Other Than Pensions
Ultimate health care cost rate (as a percent)	5.00%
Non-U.S. pension plans | Canada
Funded status of fully funded, underfunded, and unfunded pension plans:
Defined benefit pension plans, discount rate (as a percent)	4.50%
Non-U.S. pension plans | UNITED KINGDOM
Funded status of fully funded, underfunded, and unfunded pension plans:
Defined benefit pension plans, discount rate (as a percent)	4.50%	4.25%
Non-U.S. pension plans | GERMANY
Funded status of fully funded, underfunded, and unfunded pension plans:
Defined benefit pension plans, discount rate (as a percent)	3.75%	3.50%
Postretirement Benefits Other Than Pensions
Postretirement Benefits Other Than Pensions
Minimum eligible age for medical plan benefits	55 years
Minimum eligible tenure of service for medical plan benefits	10 years
Minimum required contribution by retirees and beneficiaries, as percentage of the calculated premium	40.00%
Percentage contribution by retirees for any increase in premium costs	100.00%
Initially assumed increase in per capita costs (as a percent)	8.25%
Maximum impact of one percentage point increase (decrease) in assumed health care medical cost trend rate on postretirement benefit obligations	1
Overfunded pension plans | Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Overfunded defined benefit pension plans	28.3	33.8
Overfunded pension plans | Non-U.S. pension plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Defined benefit pension plans, discount rate (as a percent)		4.06%
Underfunded and Unfunded pension plans | Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Total underfunded and unfunded defined benefit pension plans	(272.7)	(400.6)
Underfunded pension plans | Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Total underfunded and unfunded defined benefit pension plans	(61.2)	(179.7)
Underfunded pension plans | U.S. qualified pension plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Defined benefit pension plans, discount rate (as a percent)	4.50%	3.75%
Unfunded pension plans | Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Total underfunded and unfunded defined benefit pension plans	$ (211.5)	$ (220.9)