Acquisitions and License Agreements (Schedule of Reconciliation of Total Consideration) (Details) - USD ($) $ in Millions	Sep. 25, 2015	Apr. 16, 2015	Aug. 14, 2014	Mar. 19, 2014	Oct. 01, 2012
Therakos
Business Acquisition [Line Items]
Total consideration, net of cash	$ 978.4
Plus: cash assumed in acquisition	41.3
Total consideration	1,019.7
Less: unpaid purchase consideration	0.0
Less: contingent consideration	0.0
Net assets acquired	$ 1,019.7
Ikaria
Business Acquisition [Line Items]
Total consideration, net of cash		$ 1,176.3
Plus: cash assumed in acquisition		77.3
Total consideration		1,253.6
Less: unpaid purchase consideration		0.0
Less: contingent consideration		0.0
Net assets acquired		$ 1,253.6
Questcor Pharmaceuticals, Inc.
Business Acquisition [Line Items]
Total consideration, net of cash			$ 5,470.2
Plus: cash assumed in acquisition			445.1
Total consideration			5,915.3
Less: unpaid purchase consideration			(128.8)
Less: contingent consideration			0.0
Net assets acquired			$ 5,786.5
Cadence Pharmaceuticals, Inc.
Business Acquisition [Line Items]
Total consideration, net of cash				$ 1,286.0
Plus: cash assumed in acquisition				43.2
Total consideration				1,329.2
Less: unpaid purchase consideration				0.0
Less: contingent consideration				0.0
Net assets acquired				$ 1,329.2
CNS Therapeutics, Inc.
Business Acquisition [Line Items]
Total consideration, net of cash					$ 95.0
Plus: cash assumed in acquisition					3.6
Total consideration					98.6
Less: unpaid purchase consideration					0.0
Less: contingent consideration					(6.9)
Net assets acquired					$ 91.7