Goodwill And Other Intangible Assets (Rollforward Of Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Balance at beginning of year	$ 25,138.6	$ 23,826.9
Attributable to acquisitions	1,275.4	267.6	$ 3,061.8
Adjustments due to finalization of purchase price adjustments	7.5	(49.9)
Foreign currency translation and other	(515.5)	1,094.0
Balance at end of year	25,906.0	25,138.6	23,826.9
Operating segments | Life Sciences
Goodwill [Roll Forward]
Balance at beginning of year	12,335.5	11,610.3
Attributable to acquisitions	1,212.6	95.5
Adjustments due to finalization of purchase price adjustments	2.8	(19.1)
Foreign currency translation and other	(239.9)	648.8
Balance at end of year	13,311.0	12,335.5	11,610.3
Operating segments | Diagnostics
Goodwill [Roll Forward]
Balance at beginning of year	7,079.5	6,903.0
Attributable to acquisitions	0.0	0.0
Adjustments due to finalization of purchase price adjustments	0.0	(39.6)
Foreign currency translation and other	(153.9)	216.1
Balance at end of year	6,925.6	7,079.5	6,903.0
Operating segments | Dental
Goodwill [Roll Forward]
Balance at beginning of year	3,370.0	3,215.6
Attributable to acquisitions	0.0	2.8
Adjustments due to finalization of purchase price adjustments	0.0	8.8
Foreign currency translation and other	(44.5)	142.8
Balance at end of year	3,325.5	3,370.0	3,215.6
Operating segments | Environmental & Applied Solutions
Goodwill [Roll Forward]
Balance at beginning of year	2,353.6	2,098.0
Attributable to acquisitions	62.8	169.3
Adjustments due to finalization of purchase price adjustments	4.7	0.0
Foreign currency translation and other	(77.2)	86.3
Balance at end of year	$ 2,343.9	$ 2,353.6	$ 2,098.0