Pension Plans and Other Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Funded status of fully funded, underfunded, and unfunded pension plans:
Overfunded defined benefit pension plans	$ 45.7		$ 45.7		$ 16.7
Total underfunded and unfunded defined benefit pension plans	(343.1)		(343.1)		(299.6)
Pension liabilities included in other current liabilities	(358.8)		(358.8)
Postretirement Benefits Other Than Pensions
Other Comprehensive Income, Effect of Postretirement Plan Changes, Pre-tax, Net	41.9		41.9
Effect of Postretirement Plan Changes, Amortize Amount from OCI	39.5
Effect of Postretirement Plan Changes, Amortization Period	5 months
Gain on termination of postretirement plans	7.9	0	7.9	0
Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Unfunded defined benefit pension plans included in liabilities subject to compromise	0		0		(123.6)
Pension liabilities included in other current liabilities	(15.7)		(15.7)		(15.0)
Net funded status	(313.1)		(313.1)		(421.5)
U.S. qualified pension plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Defined benefit pension plans, discount rate (as a percent)	4.43%		4.43%
Postretirement Benefits Other Than Pensions
Gain on termination of postretirement plans	0	0		0
Non-U.S. pension plans
Postretirement Benefits Other Than Pensions
Gain on termination of postretirement plans	0	0	0	0
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
Gain on termination of postretirement plans	7.9	0	7.9	0
Overfunded pension plans | Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Overfunded defined benefit pension plans	45.7		45.7		16.7
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	(343.1)		(343.1)		(299.6)
Underfunded pension plans | Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Total underfunded and unfunded defined benefit pension plans	(18.8)		(18.8)		(66.2)
Unfunded pension plans | Pension Plans
Funded status of fully funded, underfunded, and unfunded pension plans:
Total underfunded and unfunded defined benefit pension plans	$ (324.3)		$ (324.3)		$ (233.4)