Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	$ 0	$ 2.8	$ 0	$ 58.8
Income (Loss) from Operations of Discontinued Operations, Net of Tax	0	4.0	0	7.1
Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period	0	2.0	0	3.4
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	1.7	(15.2)	1.7	(15.2)
Discontinued Operation, Tax Effect of Income (Loss) from Disposal of Discontinued Operation	3.4	1.3	3.4	1.3
Income (Loss) from Discontinued Operations, Net of Tax	1.7	(11.2)	1.7	(8.1)
Cash consideration on sale of business		51.0
Escrow Deposits		8.0
Proceeds From Escrow Received During The Period			$ 7.8

Portion of sales proceeds from divestiture of business that is held in an escrow account.

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Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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After tax income (loss) from operations of a business component (exclusive of any gain (loss) on disposal, or provision therefore) during the reporting period, until its disposal.

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Income tax expense or benefit attributable to Income or Loss from discontinued operations during the phase-out period.

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Amount of tax expense or benefit on gain (loss), not previously recognized, resulting from the sale of a business component.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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