The loss (gain) resulting from the write-down of the carrying value of assets classified as a disposal group, but one which is not further classified as a discontinued operation, to fair value less cost to sell. A (gain) results from a subsequent increase in fair value less cost to sell, but not in excess of the cumulative loss previously recognized. For example, the write-down of a disposal group subject to a plan of sale, which was not sold in the current period, to its held-for-sale value. The loss (gain) is included in income from continuing operations before income taxes in the income statement.

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations				29.00%	23.70%
Tax benefit associated with disposal activities and restructuring				$ 5.5
Loss from disposal activities	37.9		0	37.9	0
Repatriation of foreign earnings				9.0
Effective income tax rate associated with on-going operations	27.00%	26.00%
Tax impact of patent infringement settlement					11.0
Tax impact of other tax adjustments					$ 6.2