Derivative Instruments and Hedging Activities (Details) € in Millions, $ in Millions					3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 30, 2015 USD ($)	Dec. 02, 2014 USD ($)	Dec. 23, 2013 USD ($)	Dec. 18, 2013 USD ($)	Mar. 28, 2015 USD ($)	Dec. 27, 2014 USD ($)	Dec. 31, 2015 USD ($)	Mar. 28, 2015 USD ($)	Jun. 27, 2015 USD ($)	Jun. 28, 2014 USD ($)	Jun. 29, 2013 USD ($)	Mar. 30, 2015 EUR (€)	Dec. 05, 2014 EUR (€)	Dec. 02, 2014 EUR (€)	Sep. 28, 2013 USD ($)	Sep. 06, 2013 USD ($)
Derivatives, Fair Value [Line Items]
Loans Payable							$ 488.8		$ 530.5	$ 930.0						$ 1,000.0
Derivative, loss on derivative					$ 258.2	$ 64.7	0.0		326.4	0.0	$ 0.0
Investment Owned, Balance, Principal Amount		$ 1,600.0		$ 2,300.0
Derivative, Gain (Loss) on Derivative, Net		(5.8)
Gain (loss) on ineffective portion, net							0.1		(1.0)	(2.9)	0.2
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months							0.4
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net		1.1
Other expense, net [Member]
Derivatives, Fair Value [Line Items]
Derivative, loss on derivative									3.6
Treasury lock [Member] | Other Nonoperating Income (Expense) [Member]
Derivatives, Fair Value [Line Items]
Gain (loss) on ineffective portion, net							0.0		(0.4)	2.3	$ 0.0
Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount							$ 755.5		$ 452.3	$ 228.5
Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Maximum Remaining Maturity of Foreign Currency Derivatives							15 months		15 months	15 months	15 months
Foreign Exchange Forward [Member] | Sales Revenue, Goods, Net [Member]
Derivatives, Fair Value [Line Items]
Gain (loss) on ineffective portion, net							$ (0.1)		$ (0.1)	$ (0.1)	$ 0.0
Foreign Exchange Forward [Member] | Cost of Sales [Member]
Derivatives, Fair Value [Line Items]
Gain (loss) on ineffective portion, net							0.2		0.2	0.3	0.2
Interest Rate Swap [Member] | Other Nonoperating Income (Expense) [Member]
Derivatives, Fair Value [Line Items]
Gain (loss) on ineffective portion, net							0.0		(0.7)	(5.4)	0.0
Interest Rate Swap [Member] | Other Nonoperating Income (Expense) [Member] | Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							0.0		0.0	0.9	0.0
Fixed-rate Debt [Member] | Other Nonoperating Income (Expense) [Member] | Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							0.0		0.0	(4.1)	0.0
Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount															$ 425.0
Fair Value Hedging [Member] | Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net							0.0		0.0	(3.2)	0.0
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral							3.8		3.3	2.8
Derivative Liability, Fair Value, Amount Not Offset Against Collateral							2.3		2.0	9.0
Derivative, Gain (Loss) on Derivative, Net							(1.1)		(23.2)	(7.1)	2.7
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax							1.4		(20.5)	22.3	(11.9)
Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net								$ (26.4)	(1.9)
Designated as Hedging Instrument [Member] | Treasury lock [Member]
Derivatives, Fair Value [Line Items]
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax							0.0		(2.7)	0.0	0.0
Designated as Hedging Instrument [Member] | Treasury lock [Member] | Interest expense, net [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							0.0		(0.1)	0.2	(0.4)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax							1.7		(7.7)	15.1	(10.6)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Interest expense, net [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							(0.4)		0.0	(0.2)	(0.1)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Nonoperating Income (Expense) [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							0.1		(4.5)	(2.2)	(3.2)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Sales Revenue, Goods, Net [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							(0.8)		2.0	(2.5)	(2.9)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Cost of Sales [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							0.8		(4.2)	(6.3)	4.3
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		$ 750.0		725.0			200.0		240.0			€ 135.0
Derivative, Gain (Loss) on Derivative, Net				12.8
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax							(0.3)		(10.1)	7.2	(1.3)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net				$ 0.5
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest expense, net [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							(0.8)		(16.4)	3.9	5.0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net			$ 2.6
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral							2.0		2.0	0.7
Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral							0.3		0.0	8.3
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral							3.8		3.3	2.8
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral							1.9		2.6	0.1
Derivative, Gain (Loss) on Derivative, Net							(8.7)		(325.2)	(0.1)	4.7
Not Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount | €														€ 2,000.0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member] | Other Nonoperating Income (Expense) [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							0.0		(26.4)	0.0	0.0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Interest expense, net [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							(0.7)		(3.4)	0.0	0.0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member] | Other Nonoperating Income (Expense) [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net							(8.0)		(295.4)	(0.1)	$ 4.7
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral							1.9		2.6	0.1
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral							1.0		9.1	0.3
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral							1.0		9.1	0.3
Omega [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 20.0
Perrigo Co PLC [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member]
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss) on Derivative, Net									298.1
Omega [Member]
Derivatives, Fair Value [Line Items]
Business Acquisition, Effective Date of Acquisition	Mar. 30, 2015
Omega [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 147.0
2013 Term Loan due December 18, 2015 [Member]
Derivatives, Fair Value [Line Items]
Loans Payable							$ 0.0		$ 0.0	$ 300.0						$ 300.0
6.19% Senior Note [Member] | Omega [Member] | Omega [Member]
Derivatives, Fair Value [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	20.0
Credit facility indebtedness [Member] | Omega [Member]
Derivatives, Fair Value [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	$ 544.5
2014 Euro-Denominated Term Loan due December 5, 2019 [Member]
Derivatives, Fair Value [Line Items]
Debt Instrument, Face Amount | €													€ 614.3