Consolidated Condensed Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Oct. 02, 2020	Sep. 27, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 883.5	$ 668.0	$ 2,405.9	$ 1,733.1
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustments	922.8	(235.8)	1,845.6	(293.1)
Pension and postretirement plan benefit adjustments	8.9	5.8	25.0	15.8
Unrealized gain on available-for-sale securities adjustments	0.0	0.5	1.0	1.4
Cash flow hedge adjustments	(89.7)	(41.8)	175.6	(48.6)
Total other comprehensive income (loss), net of income taxes	842.0	(271.3)	2,047.2	(324.5)
Less: other comprehensive loss attributable to noncontrolling interest	0.0	1.2	0.0	1.2
Comprehensive income attributable to Danaher	$ 1,725.5	$ 397.9	$ 4,453.1	$ 1,409.8