Defined Contribution Plan (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 01, 2014	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Retirement Benefits [Abstract]
Percentage of company match	100.00%
Maximum percentage of eligible compensation	6.00%
Charged to expense		$ 9.6	$ 9.5	$ 10.4