Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Property, net

	September 30,
	2020		2019
Land and land improvements	$	0.8	$	0.7
Buildings and leasehold improvements	5.4		5.7
Machinery and equipment	14.2		12.2
Software	1.9		1.8
Construction in progress	0.3		0.7
	22.6		21.1
Accumulated depreciation	(12.4)		(9.4)
Property, net	$	10.2	$	11.7

Carrying amount of goodwill

Goodwill, gross	$	180.7
Accumulated impairment losses	(114.8)
Goodwill	$	65.9

Schedule of finite-lived intangible assets

	September 30, 2020						September 30, 2019
	Carrying Amount		Accumulated Amortization		Net Amount		Carrying Amount		Accumulated Amortization		Net Amount
Customer relationships	$	209.4	$	(76.9)	$	132.5	$	209.4	$	(65.5)	$	143.9
Trademarks and brands	213.4		(71.6)		141.8		213.4		(60.8)		152.6
Other intangible assets	3.1		(3.1)		—		3.1		(3.1)		—
Intangible assets, net	$	425.9	$	(151.6)	$	274.3	$	425.9	$	(129.4)	$	296.5

Impact from ASC 606 adoption

	Year Ended September 30, 2019
	As Reported Under Topic 606		As Reported Under Prior Guidance		Impact of Adoption
Net Sales	$	854.4	$	863.2	$	(8.8)
Cost of goods sold	542.6		542.6		—
Gross Profit	311.8		320.6		(8.8)
Selling, general and administrative expenses	127.1		135.9		(8.8)
Amortization of intangible assets	22.2		22.2		—
Operating Profit	$	162.5	$	162.5	$	—