Income Taxes, Income Tax Components (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2024	Mar. 31, 2023	Mar. 29, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
United States income taxes	$ (4.6)	$ 16.1	$ 7.5	$ 42.5
Foreign income taxes	14.2	10.9	22.5	25.8
Provision for income taxes	$ 9.6	$ 27.0	$ 30.0	$ 68.3
Effective tax rate	5.00%	10.40%	6.70%	11.20%