Consolidated Statements of Stockholders' Equity (USD $) In Millions	Total	Common Class A [Member]	Common Class B [Member]	Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Balance at Dec. 31, 2008	$ 477.4	$ 13.4	$ 5.1	$ 11.0	$ 504.4	$ (56.5)
Net loss	(93.4)				(93.4)
Gain (Loss) on derivatives (net of tax of $14.6 for 2009, $0.9 for 2010 and ($1.8) for 2011)	35.7					35.7
Translation adjustments (net of tax of $1.0 for 2009, $1.5 for 2010 and $1.7 for 2011)	63.1					63.1
Total Comprehensive Income (Loss)	5.4
Postretirement and postemployment benefits (net of tax of $0.0 for 2009, $12.2 for 2010 and ($0.8) for 2011)(see Note 5)	(19.4)					(19.4)
Balance at Dec. 31, 2009	463.4	13.4	5.1	11.0	411.0	22.9
Net loss	(56.8)				(56.8)
Gain (Loss) on derivatives (net of tax of $14.6 for 2009, $0.9 for 2010 and ($1.8) for 2011)	(0.2)					(0.2)
Translation adjustments (net of tax of $1.0 for 2009, $1.5 for 2010 and $1.7 for 2011)	8.0					8.0
Total Comprehensive Income (Loss)	(49.0)
Postretirement and postemployment benefits (net of tax of $0.0 for 2009, $12.2 for 2010 and ($0.8) for 2011)(see Note 5)	20.5					20.5
Balance at Dec. 31, 2010	434.9	13.4	5.1	11.0	354.2	51.2
Net loss	(73.2)				(73.2)
Gain (Loss) on derivatives (net of tax of $14.6 for 2009, $0.9 for 2010 and ($1.8) for 2011)	(26.1)					(26.1)
Translation adjustments (net of tax of $1.0 for 2009, $1.5 for 2010 and $1.7 for 2011)	(26.9)					(26.9)
Total Comprehensive Income (Loss)	(126.2)
Postretirement and postemployment benefits (net of tax of $0.0 for 2009, $12.2 for 2010 and ($0.8) for 2011)(see Note 5)	(22.8)					(22.8)
Balance at Dec. 31, 2011	$ 285.9	$ 13.4	$ 5.1	$ 11.0	$ 281.0	$ (24.6)