CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jul. 03, 2020	Jun. 28, 2019	Jul. 03, 2020	Jun. 28, 2019
Statement of Comprehensive Income [Abstract]
Net earnings		$ 60.9	$ 29.5	$ 192.9	$ 221.8
Defined benefit pension and post-retirement benefit plans:
Amortization of prior service cost included in net periodic benefit cost, net of tax benefit of $0.0* and $0.1, for the three and nine months ended July 3, 2020, respectively, and $0.0* and $0.1, for the corresponding periods of fiscal year 2019, respectively	[1]	(0.2)	(0.2)	(0.5)	(0.5)
Amortization of net actuarial loss included in net periodic benefit cost, net of tax expense of $(0.1) and $(0.4), for the three and nine months ended July 3, 2020, respectively, and $(0.1) and $(0.3), for the corresponding periods of fiscal year 2019, respectively		0.9	0.5	2.7	1.4
Defined benefit pension and post-retirement benefit plans		0.7	0.3	2.2	0.9
Derivative instruments:
Change in unrealized gain (loss), net of tax benefit (expense) of $0.4 and $(0.2), for the three and nine months ended July 3, 2020, respectively, and $0.0* and $0.0* for the corresponding periods of fiscal year 2019, respectively	[1]	(1.1)	(0.3)	0.9	(0.3)
Reclassification adjustments, net of tax benefit of $0.3 and $0.7, for the three and nine months ended July 3, 2020, respectively		(0.8)	0.0	(2.3)	0.0
Derivative instruments		(1.9)	(0.3)	(1.4)	(0.3)
Currency translation adjustment		(10.5)	2.3	(12.2)	(4.8)
Other comprehensive earnings (loss)		(11.7)	2.3	(11.4)	(4.2)
Comprehensive earnings		49.2	31.8	181.5	217.6
Less: Comprehensive earnings (loss) attributable to noncontrolling interests		(0.3)	0.1	0.3	0.6
Comprehensive earnings attributable to Varian		$ 49.5	$ 31.7	$ 181.2	$ 217.0

[1] Tax expense or benefit related to the periods presented are not material.