Restructuring Charges (Tables)

3 Months Ended

Dec. 30, 2017

Restructuring and Related Activities [Abstract]

Charges Taken Related to Restructuring Actions

The following table displays charges related to these actions recorded in the fiscal 2018 year to date period (three months ended December 30, 2017) and fiscal 2017 (the year ended September 30, 2017) and a rollforward of the accrued balances from September 30, 2017 to December 30, 2017:

	Fiscal 2018 Actions		Fiscal 2017 Actions		Fiscal 2016 Actions		Total
Restructuring Charges
Fiscal 2017 charges:
Workforce reductions	$	—	$	8.5	$	—	$	8.5
Facility closure costs	—		—		4.8		4.8
Fiscal 2017 restructuring charges	$	—	$	8.5	$	4.8	$	13.3
Fiscal 2018 charges:
Workforce reductions	$	3.8	$	—	$	—	$	3.8
Fiscal 2018 restructuring charges	$	3.8	$	—	$	—	$	3.8

Charges Taken Related to Accrued Restructuring Actions

	Fiscal 2018 Actions			Fiscal 2017 Actions			Fiscal 2016 Actions			Other			Total
Rollforward of Accrued Restructuring
Balance as of September 30, 2017	$	—		$	7.5		$	3.7		$	0.3		$	11.5
Fiscal 2018 charges	3.8			—			—			—			3.8
Stock-based compensation	(1.3		)	—			—			—			(1.3		)
Severance payments and adjustments	(0.9		)	(2.3		)	(0.2		)	—			(3.4		)
Other payments	—			—			(0.3		)	(0.1		)	(0.4		)
Balance as of December 30, 2017	$	1.6		$	5.2		$	3.2		$	0.2		$	10.2