CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Parenthetical) - USD ($) $ in Millions		3 Months Ended
		Jan. 03, 2020		Dec. 28, 2018
Statement of Comprehensive Income [Abstract]
Tax on amortization of prior service cost included in net periodic benefit cost	[1]	$ 0.0		$ 0.0
Tax on amortization of net actuarial loss included in net periodic benefit cost		(0.2)		(0.1)
Tax on increase (decrease) in unrealized gain on derivative instruments		0.0	[1]	0.0
Tax on reclassification adjustments on derivative instruments		$ 0.2		$ 0.0

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