Pension Plans and Other Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended												12 Months Ended								9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Pension Plans	Dec. 31, 2011 Pension Plans	Sep. 30, 2012 Pension Plans Underfunded and Unfunded pension plans	Dec. 31, 2011 Pension Plans Underfunded and Unfunded pension plans	Sep. 30, 2012 Pension Plans Underfunded pension plans	Dec. 31, 2011 Pension Plans Underfunded pension plans	Sep. 30, 2012 Pension Plans Unfunded pension plans	Dec. 31, 2011 Pension Plans Unfunded pension plans	Sep. 30, 2012 U.S. qualified pension plans	Dec. 31, 2011 U.S. qualified pension plans	Dec. 31, 2011 U.S. qualified pension plans United Kingdom, Germany and Canada	Dec. 31, 2011 Non-U.S. pension plans	Sep. 30, 2012 Non-U.S. pension plans United Kingdom	Dec. 31, 2011 Non-U.S. pension plans United Kingdom	Sep. 30, 2012 Non-U.S. pension plans Germany	Dec. 31, 2011 Non-U.S. pension plans Germany	Sep. 30, 2012 Non-U.S. pension plans Canada	Dec. 31, 2011 Non-U.S. pension plans Canada	Sep. 30, 2012 Postretirement Benefits Other Than Pensions year
Funded status of fully funded, underfunded, and unfunded pension plans:
Overfunded defined benefit pension plans	$ 32.8	$ 37.1	$ 32.8	$ 37.1
Total underfunded and unfunded defined benefit pension plans	(380.6)	(407.4)			(380.6)	(407.4)	(155.6)	(228.0)	(225.0)	(179.4)
Unfunded defined benefit pension plans included in liabilities subject to compromise	(189.6)	(185.2)	(127.2)	(123.3)
Pension liabilities included in other current liabilities			(14.1)	(13.2)
Net funded status			(489.1)	(506.8)
Combined balance of the underfunded and unfunded plans			521.9
Defined benefit pension plans, projected obligation				1,757
Defined benefit pension plans, discount rate (as a percent)											3.75%	4.50%		4.83%	4.25%	4.75%	3.00%	4.50%	4.25%	5.25%
Pension benefit obligation (as a percent)													90.00%
Increase (Decrease) in total plan assets	15
Increase (Decrease) in total plan liabilities	162
Postretirement Benefits Other Than Pensions
Minimum eligible age for medical plan benefits																					55
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)																					9.50%
Ultimate health care cost rate (as a percent)																					5.00%
Maximum impact of one percentage point increase (decrease) in assumed health care medical cost trend rate on postretirement benefit obligations																					$ 1
Minimum eligible tenure of service for medical plan benefits																					10 years