Taxes on Earnings - Schedule of Earnings Before Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018
Income Tax Disclosure [Abstract]
United States	$ 63.8	$ 136.4	$ 168.4
Foreign	294.5	284.4	283.7
Earnings before taxes	$ 358.3	$ 420.8	$ 452.1

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details