Discontinued Operations and Divestitures (Income (loss) from Discontinued Operations) (Details) - Contrast Media and Delivery Systems - USD ($) $ in Millions	12 Months Ended
Sep. 25, 2015	Sep. 26, 2014	Sep. 27, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 413.8	$ 495.8	$ 549.3
Cost of sales	306.4	352.9	346.7
Selling, general and administrative	97.5	97.1	114.0
Restructuring charges, net	0.3	47.2	9.5
Non-restructuring impairment charges	0.0	204.0	0.0
Other	4.7	4.1	8.4
Income (loss) from discontinued operations	4.9	(209.5)	70.7
Income tax expense (benefit)	10.8	(34.7)	21.1
Income (loss) from discontinued operations net of tax	$ (5.9)	$ (174.8)	$ 49.6

Disposal Group, Including Discontinued Operation, Restructuring Charges, Net

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Disposal Group, Including Discontinued Operations, Net Sales

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Disposal Group, Including Discontinued Operations, Non-Restructuring Impairment

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Amount before tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until its disposal.

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Amount after tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until disposal.

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Amount of tax expense (benefit) attributable to income (loss) from operations classified as a discontinued operation. Excludes tax expense (benefit) for gain (loss) on disposal and for provision for gain (loss) until disposal.

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation.

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