Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Statement of Comprehensive Income [Abstract]
Net foreign currency translation adjustment reclassifications to net income (loss)	$ 0.0	$ 2.5	$ 0.0	$ 2.5
Net unrealized gain (loss) on derivative instruments - tax impact	(3.9)	(0.8)	(4.3)	(3.6)
Reclassification of net unrealized (gains) losses on derivative instruments to net income - tax impact	0.7	(0.7)	0.9	(0.7)
Reclassification of net pension and other post-retirement benefit losses to net income - tax impact	$ 0.7	$ (0.1)	$ 0.4	$ 0.2

Amount before tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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