CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Parenthetical) - USD ($) $ in Millions		3 Months Ended
		Dec. 30, 2016	Jan. 01, 2016
Statement of Comprehensive Income [Abstract]
Tax on amortization of prior service cost included in net periodic benefit cost	[1]	$ 0.1	$ 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	0.0
Tax on increase (decrease) in unrealized gain (loss) on available for sale securities		0.0	0.1
Tax on reclassification adjustments on available for sale securities		$ 0.0	$ (0.2)

[1] Taxes related to the fiscal quarter ended January 1, 2016 were not material.