Derivative Instruments and Hedging Activities - Additional Information (Details) € in Millions		3 Months Ended
	Mar. 07, 2016 USD ($)	Apr. 02, 2016 USD ($)	Mar. 28, 2015 USD ($)	Dec. 31, 2015 USD ($)	Mar. 30, 2015 USD ($)	Mar. 30, 2015 EUR (€)
Derivative [Line Items]
Gain (loss) on derivative		$ (7,000,000)
Proceeds from issuance of debt	$ 1,200,000,000
Non-designated derivatives
Derivative [Line Items]
Gain (loss) on derivative		$ (6,800,000)	$ (258,200,000)
Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Notional amount				$ 200,000,000
Foreign currency forward contracts
Derivative [Line Items]
Maximum remaining maturity of foreign currency derivatives		15 months
Foreign Exchange Contract
Derivative [Line Items]
Notional amount		$ 611,400,000		$ 755,500,000
Restated Omega | Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Notional amount					$ 147,000,000
Euro | Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Notional amount | €						€ 135.0
Credit facility indebtedness | Restated Omega
Derivative [Line Items]
Long-term debt acquired					544,500,000
Credit facility indebtedness | Euro | Restated Omega
Derivative [Line Items]
Long-term debt acquired | €						€ 500.0
Restated Omega | Interest rate swap agreements | Designated derivatives
Derivative [Line Items]
Notional amount					20,000,000
Restated Omega | 6.19% senior notes | Restated Omega
Derivative [Line Items]
Long-term debt acquired					$ 20,000,000.0
Perrigo Co PLC | Foreign Exchange Option | Non-designated derivatives
Derivative [Line Items]
Gain (loss) on derivative			$ (259,800,000)