Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gain on settlement of litigation related to ARS								$ 0.8	$ 20.0	$ 0	$ 0
Total Sales	458.7	467.8	427.8	361.5	312.2	350.6	362.4	331.7	1,715.8	1,356.9	1,383.6
Operating Income (Loss)									107.4	(140.1)	(7.6)
Other operating charges and gain loss									(2)	(63)	(3)
unallocated and other than temporary impairment									(148)	(110)	(113)
Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest	61.1	39.3	(48.3)	(12.4)	(59.8)	(80.2)	(41.3)	(29.7)	39.7	(211.0)	(54.3)
Provision (benefit) for income taxes	12.0	7.9	(11.1)	(1.2)	(3.0)	(20.9)	(8.4)	(6.8)	7.6	(39.1)	(22.1)
Income (loss) from continuing operations, including portion attributable to noncontrolling interest	49.1	31.4	(37.2)	(11.2)	(56.8)	(59.3)	(32.9)	(22.9)	32.1	(171.9)	(32.2)
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	784				841				784	841	982
Reductions, net of additions, to product related contingency reserves						(10.7)			(5.0)	(11.5)	(2.5)
Other-than-temporary impairment of investments									0	14.8	17.0
South America [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales	41.7	42.0	42.7	42.4	33.8	36.3	39.5	35.3	168.8	144.9	124.7
Operating Income (Loss)	6.8	4.5	3.6	3.1	1.5	2.3	4.2	3.6	18.0	11.6	7.2
UNITED STATES
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales									1,342.0	991.0	1,015.0
Operating Income (Loss)									169.0	14.0	55.0
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	540				576				540	576	683
CANADA
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales									331.0	280.0	314.0
Operating Income (Loss)									3.0	(64.0)	0
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	144				158				144	158	172
South America [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales									164.0	145.0	125.0
Operating Income (Loss)									18.0	12.0	7.0
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile	100				107				100	107	127
Intersegment sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Sales									(121.0)	(59.0)	(70.0)
Fair Value, Inputs, Level 2 [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Impairment of Long-Lived Assets to be Disposed of									4.4	6.9
Other-than-temporary impairment of investments											$ 17.0