Goodwill (Goodwill by Segment) (Details) - USD ($) $ in Millions	Sep. 27, 2019	Dec. 31, 2018
Goodwill [Line Items]
Total goodwill	$ 25,724.8	$ 25,906.0
Operating segments | Life Sciences
Goodwill [Line Items]
Total goodwill	13,300.2	13,311.0
Operating segments | Diagnostics
Goodwill [Line Items]
Total goodwill	6,829.9	6,925.6
Operating segments | Dental / Envista
Goodwill [Line Items]
Total goodwill	3,283.2	3,325.5
Operating segments | Environmental & Applied Solutions
Goodwill [Line Items]
Total goodwill	$ 2,311.5	$ 2,343.9