Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities - text links (Details)	0 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended		9 Months Ended			0 Months Ended		0 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended				3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended			9 Months Ended
	Dec. 02, 2014 USD ($)	Dec. 18, 2013 USD ($)	Mar. 28, 2015 USD ($)	Mar. 29, 2014 USD ($)	Mar. 28, 2015 Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Not Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Not Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Not Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Not Designated as Hedging Instrument [Member] USD ($)	Dec. 18, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 18, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 02, 2014 Interest Rate Lock Commitments [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 02, 2014 Interest Rate Lock Commitments [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 23, 2013 Cash Flow Hedging [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Foreign Exchange Forward [Member]	Mar. 28, 2015 Foreign Exchange Forward [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Foreign Exchange Forward [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Foreign Exchange Forward [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 29, 2014 Foreign Exchange Forward [Member] Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Foreign Exchange Contract [Member] USD ($)	Jun. 28, 2014 Foreign Exchange Contract [Member] USD ($)	Mar. 28, 2015 Foreign Exchange Option [Member] Not Designated as Hedging Instrument [Member] USD ($)	Mar. 28, 2015 Foreign Exchange Option [Member] Not Designated as Hedging Instrument [Member] USD ($)	Dec. 02, 2014 Foreign Exchange Option [Member] Not Designated as Hedging Instrument [Member] EUR (€)	Mar. 29, 2014 Fair Value Hedging [Member] USD ($)	Mar. 28, 2015 Fair Value Hedging [Member] USD ($)	Mar. 29, 2014 Fair Value Hedging [Member] USD ($)	Sep. 28, 2013 Fair Value Hedging [Member] USD ($)	Mar. 28, 2015 Perrigo Co plc [Member] Foreign Exchange Option [Member] Not Designated as Hedging Instrument [Member] USD ($)
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net			$ (324,500,000)	$ 0					$ (258,200,000)	$ (900,000)	$ (329,400,000)	$ (300,000)																	$ 259,800,000	$ (26,400,000)						$ 298,100,000
Derivative, Notional Amount														240,000,000		240,000,000		725,000,000		750,000,000							329,800,000	228,500,000			2,000,000,000				425,000,000
Proceeds from Issuance of Debt	1,600,000,000	2,300,000,000
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net					(1,800,000)	(1,100,000)	(9,200,000)	15,600,000					12,800,000	2,000,000	(2,100,000)	3,900,000	9,000,000		5,800,000				(3,800,000)	1,000,000	(10,400,000)	6,600,000
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net													(500,000)						(1,100,000)		(2,600,000)											0	0	3,200,000
Maximum Remaining Maturity of Foreign Currency Derivatives																						15 months
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months			$ 5,600,000