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Employee Benefit Plans, Pensions, and Other Retiree Benefits (Pension) (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2016
Oct. 02, 2015
Compensation and Retirement Disclosure [Abstract]    
Pension benefit obligations at the end of the fiscal year $ 19.0 $ 14.9
Fair value of plan assets at the end of the fiscal year 11.4 9.8
Funded status (7.6) (5.1)
Net periodic benefit costs $ 0.1 $ 0.1