Background and Basis of Presentation (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended	12 Months Ended
Dec. 31, 2012 Property, plant and equipment, net	Mar. 31, 2012 Reclassifications Operating activities	Mar. 31, 2012 Reclassifications Investing activities	Dec. 31, 2012 Reclassifications Inventories, net	Dec. 31, 2012 Reclassifications Property, plant and equipment, net
Reclassifications
Prior period reclassifications	$ 11.1	$ (2.4)	$ 2.4	$ (11.1)	$ 11.1

The amount of a reclassification adjustment made to prior period financial statement amounts.

No definition available.

Name:	us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration