Goodwill (Goodwill By Segment) (Details) - USD ($) $ in Millions	Sep. 29, 2017	Dec. 31, 2016
Goodwill [Line Items]
Total goodwill	$ 24,783.8	$ 23,826.9
Operating segments | Life Sciences
Goodwill [Line Items]
Total goodwill	12,153.9	11,610.3
Operating segments | Diagnostics
Goodwill [Line Items]
Total goodwill	7,049.0	6,903.0
Operating segments | Dental
Goodwill [Line Items]
Total goodwill	3,341.1	3,215.6
Operating segments | Environmental & Applied Solutions
Goodwill [Line Items]
Total goodwill	$ 2,239.8	$ 2,098.0