Segment Information (Segment Results) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 03, 2015 Business_Segments	Mar. 28, 2014
Segment Reporting Information [Line Items]
Number of segments reported	5
Sales	$ 4,873.3	$ 4,662.7
Operating profit	774.2	788.9
Operating segments | Test & Measurement
Segment Reporting Information [Line Items]
Sales	857.5	871.0
Operating profit	170.7	192.7
Operating segments | Environmental
Segment Reporting Information [Line Items]
Sales	823.2	768.7
Operating profit	160.6	145.6
Operating segments | Life Sciences & Diagnostics
Segment Reporting Information [Line Items]
Sales	1,695.7	1,659.6
Operating profit	215.5	219.7
Operating segments | Dental
Segment Reporting Information [Line Items]
Sales	662.4	509.7
Operating profit	60.1	75.5
Operating segments | Industrial Technologies
Segment Reporting Information [Line Items]
Sales	834.5	853.7
Operating profit	205.2	191.7
Corporate, non-segment | Other
Segment Reporting Information [Line Items]
Operating profit	$ (37.9)	$ (36.3)