Dispositions (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended	6 Months Ended
	Apr. 04, 2011	Jul. 02, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses, net of cash divested		$ 13.8
Athena and Lancaster [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	304.0
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Per Diluted Share	$ 0.79
Revenues		54.3
Pre-tax Income (Loss)		9.1
Athena Diagnostics [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses, net of cash divested	740.0
Lancaster Laboratories [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses, net of cash divested	180.0
Escrowed proceeds from sale of business	$ 20.0