Segment Information (Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 27, 2019	Sep. 28, 2018	Sep. 27, 2019	Sep. 28, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Sales	$ 5,037.3	$ 4,853.1	$ 15,073.8	$ 14,529.5
Operating profit	834.8	830.7	2,442.4	2,441.2
Identifiable assets	61,531.1		61,531.1		$ 47,832.5
Other
Segment Reporting Information [Line Items]
Operating profit	(108.9)	(57.6)	(302.8)	(166.1)
Identifiable assets	14,490.2		14,490.2		1,144.4
Life Sciences \| Operating segments
Segment Reporting Information [Line Items]
Sales	1,695.6	1,596.7	5,035.1	4,677.9
Operating profit	342.5	312.8	995.5	875.6
Identifiable assets	22,115.0		22,115.0		22,122.4
Diagnostics \| Operating segments
Segment Reporting Information [Line Items]
Sales	1,601.9	1,502.5	4,757.0	4,573.1
Operating profit	266.0	235.1	782.0	757.4
Identifiable assets	14,175.1		14,175.1		14,031.1
Dental / Envista \| Operating segments
Segment Reporting Information [Line Items]
Sales	659.3	679.5	2,031.1	2,085.5
Operating profit	78.7	86.1	206.4	241.8
Identifiable assets	6,009.5		6,009.5		5,897.3
Environmental & Applied Solutions \| Operating segments
Segment Reporting Information [Line Items]
Sales	1,080.5	1,074.4	3,250.6	3,193.0
Operating profit	256.5	$ 254.3	761.3	$ 732.5
Identifiable assets	$ 4,741.3		$ 4,741.3		$ 4,637.3

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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