Acquisitions - General Information (Details) - USD ($) $ in Millions			12 Months Ended
	Sep. 13, 2016	Feb. 03, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Nov. 28, 2016	Nov. 30, 2015
Business Acquisition [Line Items]
Amortization of acquired intangible assets			$ 17.1	$ 15.0	$ 12.9
PBMMI and Novare
Business Acquisition [Line Items]
Actual revenues			3.4
Actual net income (loss)			0.8
Amortization of acquired intangible assets			0.3
Cool Lab, LLC
Business Acquisition [Line Items]
Liabilities arising from contingencies, amount recognized			0.7			$ 0.7
Actual revenues			3.7
Actual net income (loss)			(0.3)
Inventory step up			0.4
Amortization of acquired intangible assets			1.2
BioStorage Technologies, Inc.
Business Acquisition [Line Items]
Proceeds from settlement of business acquisition working capital adjustments	$ 0.2
Change in purchase price	(0.2)
Decrease in goodwill	$ 0.2
Actual revenues			62.8	44.6
Actual net income (loss)			9.3	2.4
Amortization of acquired intangible assets			4.6	2.9
Escrow deposit for acquiree's employees retention obligations							$ 2.5
Compensation expense			0.1	2.4
Contact Co., Ltd
Business Acquisition [Line Items]
Actual revenues			7.0	4.5
Actual net income (loss)			2.0	(1.1)
Inventory step up			0.1	0.6
Amortization of acquired intangible assets			0.4	0.7
FluidX
Business Acquisition [Line Items]
Change in purchase price		$ 0.1
Actual revenues			17.7	15.6	15.0
Actual net income (loss)			(0.4)	(0.2)	(0.6)
Inventory step up					1.0
Amortization of acquired intangible assets			1.1	1.2	1.4
Selling, General and Administrative Expenses | PBMMI and Novare
Business Acquisition [Line Items]
Acquisition related costs			0.3
Selling, General and Administrative Expenses | Cool Lab, LLC
Business Acquisition [Line Items]
Acquisition related costs			0.4
Selling, General and Administrative Expenses | BioStorage Technologies, Inc.
Business Acquisition [Line Items]
Acquisition related costs			0.3	3.2
Selling, General and Administrative Expenses | Contact Co., Ltd
Business Acquisition [Line Items]
Acquisition related costs			0.0	0.1	0.2
Selling, General and Administrative Expenses | FluidX
Business Acquisition [Line Items]
Acquisition related costs					$ 0.5
Prepaid Expenses and Other Current Assets | BioStorage Technologies, Inc.
Business Acquisition [Line Items]
Escrow deposit for acquiree's employees retention obligations			$ 0.0	$ 0.1			$ 2.5