Commitments and Contingencies Commitments and Contingencies (Details)		2 Months Ended	3 Months Ended
	May 22, 2016 defendant	Nov. 30, 2011 application	Sep. 26, 2015	May 18, 2016 plaintiff
Roofers' Pension Fund v. Papa, et al.
Loss Contingencies [Line Items]
Number of plaintiff groups seeking appointment as lead plaintiff/counsel | plaintiff				4
Schwieger et al. v. Perrigo Company PLC, et al.
Loss Contingencies [Line Items]
Number of defendants | defendant	5
Eltroxin
Loss Contingencies [Line Items]
Number of applications to certify class action lawsuits		9
Number of applications dismissed		1
Number of applications consolidated		8
Number applications remaining after consolidation		1
Tysabri Product Liability Lawsuit | Biogen [Member]
Loss Contingencies [Line Items]
Percentage of losses and expenses to be paid			50.00%
Tysabri Product Liability Lawsuit | Perrigo Co PLC
Loss Contingencies [Line Items]
Percentage of losses and expenses to be paid			50.00%