Derivative Instruments and Hedging Activities - Additional Information (Details)				3 Months Ended			6 Months Ended
		Mar. 07, 2016 USD ($)	Apr. 08, 2015 USD ($)	Jul. 02, 2016 USD ($)	Jun. 27, 2015 USD ($)	Mar. 28, 2015 USD ($)	Jul. 02, 2016 USD ($)	Jun. 27, 2015 USD ($)	Dec. 31, 2015 USD ($)	Jun. 25, 2015 USD ($)	Mar. 30, 2015 USD ($)	Mar. 30, 2015 EUR (€)	Dec. 05, 2014 USD ($)
Derivative [Line Items]
Proceeds from issuance of debt		$ 1,200,000,000
Gain (loss) on derivatives							$ (7,000,000)
Repayments of long-term debt					$ 300,000,000		28,700,000	$ 889,000,000
Term loans	[1]												$ 300,000,000
Loss on derivatives							0	300,000,000
Foreign currency cash flow hedge gain (loss) to be reclassified during the next 12 months				$ (1,000,000)			(1,000,000)
Non-designated derivatives
Derivative [Line Items]
Gain (loss) on derivatives				(2,200,000)	4,200,000		$ (9,000,000)	$ (254,000,000)
Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Derivative notional amount									$ 200,000,000	$ 240,000,000
Foreign currency forward contracts
Derivative [Line Items]
Maximum remaining maturity of foreign currency derivatives							15 months
Foreign exchange contract
Derivative [Line Items]
Derivative notional amount				$ 500,400,000			$ 500,400,000		$ 755,500,000
Foreign exchange option | Designated derivatives
Derivative [Line Items]
Gain (loss) on derivatives					(1,900,000)
Other expense, net
Derivative [Line Items]
Loss on derivatives					$ 3,600,000
Omega | Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Derivative notional amount											$ 147,000,000
Gain (loss) on derivatives			$ 0
Omega | Credit facility indebtedness
Derivative [Line Items]
Long-term debt assumed											544,500,000
Euro | Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Derivative notional amount | €												€ 135,000,000
Euro | Omega | Credit facility indebtedness
Derivative [Line Items]
Long-term debt assumed | €												€ 500,000,000
Omega | Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Derivative notional amount											20,000,000
Perrigo Co PLC | Foreign exchange option | Non-designated derivatives
Derivative [Line Items]
Gain (loss) on derivatives						$ (259,800,000)
6.19% senior notes | Omega | Omega
Derivative [Line Items]
Long-term debt assumed											$ 20,000,000.0

[1] Debt denominated in euros subject to fluctuations in the euro-to-U.S. dollar exchange rate.