Business Acquisitions (Details)				0 Months Ended	6 Months Ended		0 Months Ended	6 Months Ended		0 Months Ended		0 Months Ended		0 Months Ended	6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended								0 Months Ended				0 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended				6 Months Ended																6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended								0 Months Ended			0 Months Ended			0 Months Ended				0 Months Ended			0 Months Ended			0 Months Ended
	Dec. 27, 2014 USD ($)	Jun. 28, 2014 USD ($)	Dec. 18, 2013 USD ($)	Nov. 06, 2014 Omega [Member]	Dec. 27, 2014 Omega [Member] USD ($)	Nov. 06, 2014 Omega [Member]	Oct. 31, 2014 Lumara [Member]	Dec. 27, 2014 Lumara [Member] USD ($)	Dec. 18, 2013 Perrigo Company [Member] USD ($)	Feb. 28, 2014 Aspen Global [Member] USD ($)	Feb. 28, 2014 Aspen Global [Member] USD ($)	Feb. 18, 2014 Fera (methazolomide) [Member] USD ($)	Feb. 18, 2014 Fera (methazolomide) [Member] USD ($)	Dec. 18, 2013 Elan Corporation [Member] USD ($)	Dec. 27, 2014 Elan Corporation [Member] USD ($)	Jun. 28, 2014 Elan Corporation [Member] USD ($)	Dec. 18, 2013 Elan Corporation [Member] USD ($)	Dec. 28, 2013 Vedants Drug and Fine Chemicals Private Ltd [Member] USD ($)	Jun. 27, 2009 Vedants Drug and Fine Chemicals Private Ltd [Member] USD ($)	Aug. 06, 2009 Vedants Drug and Fine Chemicals Private Ltd [Member]	Feb. 28, 2014 Trademarks and Trade Names [Member] Aspen Global [Member] USD ($)	Feb. 18, 2014 Trademarks and Trade Names [Member] Fera (methazolomide) [Member] USD ($)	Dec. 18, 2013 Trademarks and Trade Names [Member] Elan Corporation [Member] USD ($)	Feb. 28, 2014 Customer Relationships [Member] Aspen Global [Member] USD ($)	Feb. 18, 2014 Customer Relationships [Member] Fera (methazolomide) [Member] USD ($)	Dec. 18, 2013 Customer Relationships [Member] Elan Corporation [Member] USD ($)	Nov. 06, 2014 Noncompete Agreements [Member] Omega [Member]	Feb. 28, 2014 Noncompete Agreements [Member] Aspen Global [Member] USD ($)	Feb. 18, 2014 Noncompete Agreements [Member] Fera (methazolomide) [Member] USD ($)	Dec. 18, 2013 Noncompete Agreements [Member] Elan Corporation [Member] USD ($)	Nov. 06, 2014 Non-solicit agreement [Member] Omega [Member]	Dec. 27, 2014 Tysabri [Member] USD ($)	May 01, 2014 Tysabri [Member]	Dec. 27, 2014 Prialt [Member] USD ($)	Feb. 28, 2014 Distribution And License Agreements [Member] Aspen Global [Member] USD ($)	Feb. 18, 2014 Distribution And License Agreements [Member] Fera (methazolomide) [Member] USD ($)	Dec. 18, 2013 Distribution And License Agreements [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Minimum [Member] Tysabri [Member] USD ($)	Dec. 27, 2014 Minimum [Member] Prialt [Member]	Dec. 27, 2014 Maximum [Member] Tysabri [Member] USD ($)	Dec. 27, 2014 Maximum [Member] Prialt [Member]	Dec. 27, 2014 Consumer Healthcare [Member] USD ($)	Jun. 28, 2014 Consumer Healthcare [Member] USD ($)	Dec. 27, 2014 Consumer Healthcare [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Rx Pharmaceuticals [Member] USD ($)	Jun. 28, 2014 Rx Pharmaceuticals [Member] USD ($)	Dec. 27, 2014 Rx Pharmaceuticals [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Nutritionals [Member] USD ($)	Jun. 28, 2014 Nutritionals [Member] USD ($)	Dec. 27, 2014 Nutritionals [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Specialty Sciences [Member] USD ($)	Jun. 28, 2014 Specialty Sciences [Member] USD ($)	Dec. 27, 2014 Specialty Sciences [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 General and Administrative Expense [Member] Omega [Member] USD ($)	Jun. 28, 2014 General and Administrative Expense [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Interest expense, net [Member] Omega [Member] USD ($)	Jun. 28, 2014 Interest expense, net [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Other expense (income), net [member] Omega [Member] USD ($)	Jun. 28, 2014 Other expense (income), net [member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Loss on extinguishment of debt [Member] Omega [Member] USD ($)	Jun. 28, 2014 Loss on extinguishment of debt [Member] Elan Corporation [Member] USD ($)	Dec. 27, 2014 Lumara [Member] Minimum [Member] Product Formulations [Member]	Dec. 27, 2014 Lumara [Member] Maximum [Member] Product Formulations [Member]	Dec. 27, 2014 Elan Corporation [Member] Tysabri [Member]	Dec. 27, 2014 Elan Corporation [Member] Prialt [Member]	Dec. 27, 2014 Aspen Global [Member] Customer Relationships [Member]	Dec. 27, 2014 Aspen Global [Member] Trademarks and Trade Names [Member]	Dec. 27, 2014 Aspen Global [Member] Noncompete Agreements [Member]	Dec. 27, 2014 Fera (methazolomide) [Member] Customer Relationships [Member]	Nov. 06, 2014 Euro Member Countries, Euro Omega [Member] EUR (€)	Nov. 06, 2014 Euro Member Countries, Euro Omega [Member] EUR (€)	Nov. 06, 2014 Consideration for business acquisition [Member] Omega [Member]	Nov. 06, 2014 5.1045% Senior Note [Member] Omega [Member]	Nov. 06, 2014 5.1045% Senior Note [Member] Omega [Member]	Nov. 06, 2014 5.1045% Senior Note [Member] Euro Member Countries, Euro Omega [Member] EUR (€)	Nov. 06, 2014 6.19% Senior Note [Member] Omega [Member]	Nov. 06, 2014 6.19% Senior Note [Member] Omega [Member]	Nov. 06, 2014 6.19% Senior Note [Member] Euro Member Countries, Euro Omega [Member] EUR (€)	Nov. 06, 2014 6.19% Senior Note [Member] United States of America, Dollars Omega [Member] USD ($)	Nov. 06, 2014 5.125% Retail Bond [Member] Omega [Member]	Nov. 06, 2014 5.125% Retail Bond [Member] Omega [Member]	Nov. 06, 2014 5.125% Retail Bond [Member] Euro Member Countries, Euro Omega [Member] EUR (€)	Nov. 06, 2014 4.5% Retail Bond [Member] Omega [Member]	Nov. 06, 2014 4.5% Retail Bond [Member] Omega [Member]	Nov. 06, 2014 4.5% Retail Bond [Member] Euro Member Countries, Euro Omega [Member] EUR (€)	Nov. 06, 2014 5.0% Retail Bond [Member] Omega [Member]	Nov. 06, 2014 5.0% Retail Bond [Member] Omega [Member]	Nov. 06, 2014 5.0% Retail Bond [Member] Euro Member Countries, Euro Omega [Member] EUR (€)	Nov. 06, 2014 Credit facility indebtedness [Member] Euro Member Countries, Euro Omega [Member] EUR (€)
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement				Nov. 06, 2014
Acquired company shares outstanding on acquisition date						685,348,257
Business Acquisition, Percentage of Voting Interests Acquired						95.77%			71.00%								29.00%	15.00%		85.00%
Treasury Stock, Shares, Acquired				30,243,983
Payments to Acquire Businesses, Gross								$ 83,000,000		$ 53,700,000		$ 17,300,000		$ 9,451,900,000																																																								€ 3,600,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities								83,000,000			0		0				773,400,000																																																						1,100,000,000				135,000,000			16,200,000	20,000,000			300,000,000			180,000,000			120,000,000	390,000,000
Share Price									0.01								3,223,200,000																																																						1,800,000,000
Total Company shares issued to acquired company shareholders						5,397,711											39,400,000
Consideration for which interest expense is calculated on up to the point of business acquisition completion																																																																						2,480,000,000
Debt Instrument, Interest Rate, Stated Percentage																																																																								5.00%		5.1045%			6.19%				5.125%			4.50%			5.00%
Escrow Deposit Disbursements Related to Property Acquisition																																																																						248,000,000
Debt Instrument, Maturity Date																																																																									Jan. 01, 2023			Jan. 01, 2016				Jan. 01, 2017			Jan. 01, 2017			Jan. 01, 2019
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life																											3 years				2 years																															8 years	12 years	20 years	10 years	15 years	25 years	5 years	15 years
Business Acquisition, Effective Date of Acquisition							Oct. 31, 2014			Feb. 28, 2014		Feb. 18, 2014		Dec. 18, 2013
Shares, Outstanding																	515,700,000
Business Acquisition, Share Exchange Ratio																	0.07636
Business Acquisition, Share Price																	$ 155.34
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned																	6,117,200,000
Business acquisition, cash consideration paid for vested stock options and awards																	111,500,000
Business acquisition, cash consideration paid on unvested stock options and awards																16,100,000
Business Acquisition, Cash Exchange per share			$ 6.25
Business Combination, Acquisition Related Costs					92,000,000											284,900,000																																						11,600,000	108,900,000	5,000,000	10,000,000	65,800,000	200,000	9,600,000	165,800,000
Percent of royalty revenues generated by specific agreement																																	12.00%					18.00%	7.00%	25.00%	17.50%
Sales Revenue, Goods, Net																																						2,000,000,000		2,000,000,000
Finite-lived Intangible Assets Acquired																																5,800,000,000		11,000,000
Goodwill	3,416,600,000	3,474,100,000						900,000			4,600,000		0		2,333,100,000		2,333,100,000																									1,391,000,000	1,406,300,000	1,110,000,000	1,230,300,000	1,258,300,000	845,100,000	509,100,000	510,100,000	177,400,000	200,700,000	201,800,000	200,600,000
Business combination provisional adjustment, initial valuation incomplete, non-current liabilities															13,000,000
Contingent consideration	12,400,000	17,400,000									0		800,000				0
Business Combination, Consideration Transferred								83,000,000		53,700,000		18,100,000		9,451,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents											0		0				1,807,300,000
business combination, recognized identifiable assets acquired and liabilities assumed, investments											0		0				100,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables								2,000,000			0		0				44,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory								1,400,000			2,700,000		300,000				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets								500,000			0		0				27,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment								100,000			0		0				9,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles											46,400,000		17,800,000				5,811,000,000				34,800,000	0	0	9,800,000	0	0		1,800,000	0	0					0	17,800,000	5,811,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets								86,900,000			0		0				93,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets											53,700,000		18,100,000				10,225,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable								3,900,000			0		0				2,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities											0		0				120,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent											0		0				631,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities											0		0				18,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net											53,700,000		18,100,000				9,451,900,000
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests																		$ 7,200,000	$ 11,500,000