CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net earnings		$ 72.5	$ 69.9	$ 33.5	$ 140.6
Defined benefit pension and post-retirement benefit plans:
Amortization of prior service cost included in net periodic benefit cost, net of tax benefit of $0.1 and $0.2 for the three and nine months ended June 29, 2018, respectively, and $0.0 and $0.1 for the corresponding periods of fiscal year 2017, respectively.	[1]	(0.1)	(0.2)	(0.6)	(0.4)
Amortization of net actuarial loss included in net periodic benefit cost, net of tax expense of ($0.1) and ($0.4) for three and nine months ended June 29, 2018, respectively, and ($0.2) and ($0.6) for the corresponding periods of fiscal year 2017, respectively.		0.5	0.9	1.7	2.7
Defined benefit pension and post-retirement benefit plans		0.4	0.7	1.1	2.3
Derivative instruments:
Change in unrealized loss, net of tax benefit of $0.3 for the nine months ended June 29, 2018.		0.0	0.0	(0.6)	0.0
Reclassification adjustments, net of tax expense of ($0.3) for the nine months ended June 29, 2018.		0.0	0.0	0.6	0.0
Derivative instruments		0.0	0.0	0.0	0.0
Currency translation adjustment		(12.7)	14.7	(3.0)	4.5
Other comprehensive (loss) earnings		(12.3)	15.4	(1.9)	6.8
Comprehensive earnings		60.2	85.3	31.6	147.4
Less: Comprehensive (loss) earnings attributable to noncontrolling interests		(0.1)	0.2	0.0	0.7
Comprehensive earnings attributable to Varian		$ 60.3	$ 85.1	$ 31.6	$ 146.7

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