Segment Information (Segment Results) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2015 USD ($)	Sep. 26, 2014 USD ($)	Oct. 02, 2015 USD ($) Business_Segments	Sep. 26, 2014 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of segments reported | Business_Segments			5
Sales	$ 5,023.4	$ 4,707.1	$ 14,678.3	$ 13,929.8
Operating profit	800.8	866.2	2,490.3	2,479.8
Identifiable Assets	49,707.9		49,707.9		$ 36,991.7
Continuing operations | Operating segments | Test & Measurement
Segment Reporting Information [Line Items]
Sales	643.5	657.8	1,997.7	1,981.7
Operating profit	146.1	144.2	461.4	430.1
Identifiable Assets	3,522.0		3,522.0		3,550.9
Continuing operations | Operating segments | Environmental
Segment Reporting Information [Line Items]
Sales	922.4	914.1	2,637.9	2,558.8
Operating profit	202.8	186.2	564.5	515.6
Identifiable Assets	3,821.1		3,821.1		3,824.9
Continuing operations | Operating segments | Life Sciences & Diagnostics
Segment Reporting Information [Line Items]
Sales	1,997.6	1,741.2	5,533.6	5,190.8
Operating profit	214.8	272.8	716.4	775.2
Identifiable Assets	29,928.5		29,928.5		13,743.9
Continuing operations | Operating segments | Dental
Segment Reporting Information [Line Items]
Sales	652.2	528.4	2,002.2	1,566.2
Operating profit	96.8	91.2	254.2	244.6
Identifiable Assets	5,963.9		5,963.9		6,224.3
Continuing operations | Operating segments | Industrial Technologies
Segment Reporting Information [Line Items]
Sales	807.7	865.6	2,506.9	2,632.3
Operating profit	196.8	210.1	623.4	619.3
Identifiable Assets	4,054.3		4,054.3		4,149.0
Continuing operations | Other
Segment Reporting Information [Line Items]
Operating profit	(56.5)	$ (38.3)	(129.6)	$ (105.0)
Identifiable Assets	2,418.1		2,418.1		3,615.2
Discontinued operations
Segment Reporting Information [Line Items]
Identifiable Assets	$ 0.0		$ 0.0		$ 1,883.5