Discontinued Operations and Divestitures (Income (loss) from Discontinued Operations) (Details) - USD ($)		12 Months Ended
		Sep. 30, 2016	Sep. 25, 2015	Sep. 26, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Domestic	[1]	$ 300,000	$ 200,000	$ 22,300,000
Discontinued Operation, Tax Effect of Discontinued Operation		43,500,000	47,900,000	(32,200,000)
Benefit from income taxes	[1]	(255,600,000)	(129,300,000)	(12,600,000)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	[2],[3]	(249,300,000)	(152,900,000)	(14,200,000)
International	[1]	120,500,000	67,300,000	18,900,000
Domestic	[1]	700,000	(800,000)	(41,900,000)
International Deferred	[1]	377,100,000	196,000,000	11,900,000
Contrast Media and Delivery Systems
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Tax Expense (Benefit)				2,000,000
Domestic			0	10,400,000
Net sales		61,000,000	413,800,000	495,800,000
Cost of sales		46,900,000	306,400,000	352,900,000
Selling, general and administrative		20,300,000	97,500,000	97,100,000
Restructuring charges, net		0	300,000	47,200,000
Non-restructuring impairment charges		0	0	204,000,000
Other		1,200,000	4,700,000	4,100,000
(Loss) income from discontinued operations		(7,400,000)	4,900,000	(209,500,000)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax		95,300,000	0	0
Discontinued Operation, Tax Effect of Discontinued Operation		(2,100,000)
Benefit from income taxes				36,200,000
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		87,900,000	4,900,000	(209,500,000)
Income tax expense (benefit)		(2,500,000)	10,800,000	(34,700,000)
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation		(400,000)
Income (loss) from discontinued operations net of tax		90,400,000	(5,900,000)	(174,800,000)
Goodwill, Impairment Loss				100,200,000
Increase (Decrease) in Accrued Liabilities				900,000
International		900,000	14,900,000	(6,600,000)
International Deferred		3,400,000	4,400,000	3,000,000
Nuclear Imaging
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Tax Expense (Benefit)		900,000	400,000	700,000
Domestic		100,000	100,000	18,600,000
Net sales		418,600,000	423,800,000	431,700,000
Cost of sales		216,600,000	193,100,000	256,100,000
Selling, general and administrative		83,700,000	89,600,000	111,500,000
Restructuring charges, net		2,300,000	(4,600,000)	13,400,000
Non-restructuring impairment charges		0	0	124,500,000
Other		5,700,000	37,700,000	45,500,000
(Loss) income from discontinued operations		110,300,000	108,000,000	(119,300,000)
Income tax expense (benefit)		49,000,000	36,400,000	2,500,000
Income (loss) from discontinued operations net of tax		61,300,000	71,600,000	(121,800,000)
Goodwill, Impairment Loss				119,500,000
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	[2],[3]	11,700,000	14,300,000	3,100,000
Increase (Decrease) in Accrued Liabilities		14,400,000		1,300,000
International		52,500,000	27,800,000	1,000,000
Domestic				7,800,000
International Deferred		$ (3,600,000)	$ (8,600,000)	$ (7,400,000)

[1] Domestic reflects U.K. in fiscal 2016 and 2015, and U.S. federal and state in fiscal 2014.

[2] Due to the December 31, 2013 Research Credit tax law expiration, fiscal 2014 includes $0.7 million for the period September 28, 2013 through December 31, 2013. During fiscal 2015, the legislation was extended, with a retroactive effective date of January 1, 2014. As such, fiscal 2015 includes approximately $3.6 million of credit related to the period January 1, 2014 through September 26, 2014.

[3] Includes the impact of certain recurring valuation allowances for Domestic and International jurisdictions.