Condensed Consolidated and Combined Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Former Parent Investment, Net	Accumulated Other Comprehensive Loss	Total Envista Equity	Noncontrolling Interests
Balance, beginning of period at Dec. 31, 2018		$ 0.0	$ 0.0	$ 0.0	$ 4,901.3	$ (78.2)	$ 4,823.1	$ 3.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Former Parent common stock-based award activity					4.1		4.1
Net transfers from Former Parent					24.3		24.3
Net (loss) income					37.9		37.9
Other comprehensive income (loss)						(37.7)	(37.7)
Changes in noncontrolling interests								(0.1)
Balance, end of period at Mar. 29, 2019		0.0	0.0	0.0	4,967.6	(115.9)	4,851.7	3.2
Balance, beginning of period at Dec. 31, 2018		0.0	0.0	0.0	4,901.3	(78.2)	4,823.1	3.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ 161.5
Other comprehensive income (loss)	(62.7)
Balance, end of period at Sep. 27, 2019		1.6	3,613.6	37.0	0.0	(140.9)	3,511.3	2.7
Balance, beginning of period at Mar. 29, 2019		0.0	0.0	0.0	4,967.6	(115.9)	4,851.7	3.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Former Parent common stock-based award activity					4.8		4.8
Net transfers from Former Parent					(95.1)		(95.1)
Net (loss) income					61.5		61.5
Other comprehensive income (loss)						30.5	30.5
Changes in noncontrolling interests								(0.3)
Balance, end of period at Jun. 28, 2019		0.0	0.0	0.0	4,938.8	(85.4)	4,853.4	2.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock		1.6	643.1				644.7
Common stock-based award activity			0.5				0.5
Former Parent common stock-based award activity					3.1		3.1
Consideration to Danaher in connection with the Separation			(1,950.0)				(1,950.0)
Net transfers from Former Parent					(45.7)		(45.7)
Reclassification of net parent investment			4,920.0		(4,921.3)		(1.3)
Net (loss) income	62.1			37.0	25.1		62.1
Other comprehensive income (loss)	(55.5)					(55.5)	(55.5)
Changes in noncontrolling interests								(0.2)
Balance, end of period at Sep. 27, 2019		1.6	3,613.6	37.0	$ 0.0	(140.9)	3,511.3	2.7
Balance, beginning of period at Dec. 31, 2019	3,542.8	1.6	3,589.7	93.1		(144.2)	3,540.2	2.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock-based award activity			6.4				6.4
Net (loss) income				(17.2)			(17.2)
Other comprehensive income (loss)						(45.7)	(45.7)
Balance, end of period at Apr. 03, 2020		1.6	3,596.1	75.9		(189.9)	3,483.7	2.6
Balance, beginning of period at Dec. 31, 2019	3,542.8	1.6	3,589.7	93.1		(144.2)	3,540.2	2.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(75.1)
Other comprehensive income (loss)	8.0
Balance, end of period at Oct. 02, 2020	3,559.8	1.6	3,674.2	18.0		(136.2)	3,557.6	2.2
Balance, beginning of period at Apr. 03, 2020		1.6	3,596.1	75.9		(189.9)	3,483.7	2.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock-based award activity			7.6				7.6
Equity component of convertible senior notes, net of financing costs and taxes			77.9				77.9
Purchase of capped calls related to issuance of convertible senior notes, net of taxes			(15.7)				(15.7)
Net (loss) income				(93.5)			(93.5)
Other comprehensive income (loss)						33.4	33.4
Changes in noncontrolling interests								(0.1)
Balance, end of period at Jul. 03, 2020		1.6	3,665.9	(17.6)		(156.5)	3,493.4	2.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock-based award activity			8.3				8.3
Net (loss) income	35.6						35.6
Other comprehensive income (loss)	20.3					20.3	20.3
Changes in noncontrolling interests								(0.3)
Balance, end of period at Oct. 02, 2020	$ 3,559.8	$ 1.6	$ 3,674.2	$ 18.0		$ (136.2)	$ 3,557.6	$ 2.2