Indebtedness (Details) € in Millions														1 Months Ended	3 Months Ended		12 Months Ended
		Apr. 08, 2015 EUR (€)	Apr. 08, 2015 USD ($)	Mar. 30, 2015 EUR (€)	Mar. 30, 2015 USD ($)	Dec. 05, 2014 USD ($)	Dec. 02, 2014 USD ($)	Nov. 06, 2014 EUR (€)	Jul. 28, 2014	Dec. 27, 2013 USD ($)	Dec. 23, 2013 USD ($)	Dec. 18, 2013 USD ($)	Sep. 06, 2013 USD ($)	Nov. 30, 2013 USD ($)	Dec. 27, 2014 USD ($)	Dec. 28, 2013 USD ($)	Jun. 27, 2015 USD ($)		Jun. 28, 2014 USD ($)	Jun. 29, 2013 USD ($)	Mar. 30, 2015 USD ($)	Dec. 05, 2014 EUR (€)	Dec. 05, 2014 USD ($)	Nov. 08, 2013 USD ($)	Jul. 28, 2013 USD ($)
Debt Instrument [Line Items]
Maximum Borrowings Under Securitization Program																	$ 200,000,000
Short term debt																	6,400,000		$ 2,100,000
Term loans													$ 1,000,000,000				530,500,000		930,000,000
Senior notes																	4,720,900,000		2,300,000,000					$ 2,300,000,000
Other financing																	6,600,000		8,100,000
Unamortized premium, net																	87,500,000		(6,000,000)
Deferred financing fees																	(40,500,000)		(27,400,000)
Total borrowings outstanding																	5,311,400,000		3,206,800,000
Debt, Short Term and Current Portion of Long Term																	(64,600,000)		(143,700,000)
Total long-term debt, less current portion																	5,246,900,000		3,063,100,000
Payments for Deposits Applied to Debt Retirements																$ 133,500,000
Write off of financing fees on bridge credit agreements																19,000,000
Line of Credit Facility, Collateral								364 days
Debt Instrument, Issuance Date						Dec. 05, 2014		Nov. 06, 2014	Jul. 28, 2013				Sep. 06, 2013
Line of Credit Facility, Maximum Borrowing Capacity | €																						€ 1,000.0
Line of Credit Facility, Fair Value of Amount Outstanding																	0		0
Borrowings Outstanding Under Securitization Program																	0		0
Gains (Losses) on Extinguishment of Debt [Abstract]
Extinguishment of Debt, Amount						$ 895,000,000
Write off of financing fees																10,500,000
Write-off of unamortized discount																2,800,000
Total loss on extinguishment of debt															$ (9,600,000)	$ 165,800,000	10,500,000		$ 165,800,000	$ 0
Long-term Debt, Fiscal Year Maturity [Abstract]
Annual maturities of debt: 2015																	65,000,000
Annual maturities of debt: 2016																	758,500,000
Annual maturities of debt: 2017																	399,100,000
Annual maturities of debt: 2018																	811,300,000
Annual maturities of debt: 2019																	279,500,000
Annual maturities of debt: Thereafter																	$ 2,950,800,000
2014 Euro-Denominated Term Loan due December 5, 2019 additional draw [Domain]
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount | €																						368.6
2014 term loan due December 18, 2015 [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount																							$ 300,000,000
2014 Euro-Denominated Term Loan due December 5, 2019 [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount | €																						614.3
3.5% Senior note due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							3.50%										3.50%
Debt Instrument, Maturity Date																	Dec. 15, 2021
Debt Instrument, Issuance Date							Dec. 02, 2014
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount							$ 500,000,000
3.9% senior note due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							3.90%										3.90%
Debt Instrument, Maturity Date																	Dec. 15, 2024
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount							$ 700,000,000
4.9% Senior Loan due 2044 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							4.90%										4.90%
Debt Instrument, Maturity Date																	Dec. 15, 2044
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount							$ 400,000,000
1.30% Unsecured Senior Notes due November 8, 2016 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	1.30%		1.30%
Debt Instrument, Maturity Date																	Nov. 08, 2016		Nov. 08, 2016
2.30% Unsecured Senior notes November 8, 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	2.30%		2.30%
Debt Instrument, Maturity Date																	Nov. 08, 2018		Nov. 08, 2018
4.00% Unsecured Senior Notes due November 15, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	4.00%		4.00%
Debt Instrument, Maturity Date																	Nov. 15, 2023		Nov. 15, 2023
5.30% Unsecured Senior Notes due November 15, 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	5.30%		5.30%
Debt Instrument, Maturity Date																	Nov. 15, 2043		Nov. 15, 2043
Bridge Credit Agreements [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity | €								€ 2,170.0
2014 bonds [Member]
Debt Instrument [Line Items]
Senior notes																	$ 1,600,000,000
Revolving Credit Facility [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount																							$ 600,000,000
Debt Bridge Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity																									$ 2,650,000,000
Cash Bridge Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity																									$ 1,700,000,000
5.105% Senior note due July 19, 2023 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	5.105%
Debt Instrument, Maturity Date																	Jul. 19, 2023
Senior notes	[1]																$ 150,800,000	[2]	$ 0
5.000% Unsecured Senior notes due May 23, 2019 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	5.00%
Debt Instrument, Maturity Date																	May 23, 2019
Senior notes	[1]																$ 134,100,000	[2]	0
4.500% Unsecured Senior Notes due May 23, 2017 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	4.50%
Debt Instrument, Maturity Date																	May 23, 2017
Senior notes	[1]																$ 201,000,000	[2]	$ 0
2014 Euro-Denominated Term Loan due December 5, 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date																	Dec. 05, 2019		Dec. 05, 2019
Term loans																	$ 530,500,000		$ 0
2013 Term Loan due December 18, 2015 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date																	Dec. 18, 2015		Dec. 18, 2015
Term loans													$ 300,000,000				$ 0		$ 300,000,000
2013 Term Loan due December 18, 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date																	Dec. 18, 2018		Dec. 18, 2018
Term loans													$ 700,000,000				$ 0		$ 630,000,000
3.5% Senior note due 2021 [Member]
Debt Instrument [Line Items]
Senior notes	[3]																500,000,000		0
3.9% senior note due 2024 [Member]
Debt Instrument [Line Items]
Senior notes	[3]																700,000,000		0
4.9% Senior Loan due 2044 [Member]
Debt Instrument [Line Items]
Senior notes	[3]																400,000,000		0
1.30% Unsecured Senior Notes due November 8, 2016 [Member]
Debt Instrument [Line Items]
Senior notes	[4]																500,000,000		500,000,000
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount																								500,000,000
2.30% Unsecured Senior notes November 8, 2018 [Member]
Debt Instrument [Line Items]
Senior notes	[4]																600,000,000		600,000,000
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount																								600,000,000
4.00% Unsecured Senior Notes due November 15, 2023 [Member]
Debt Instrument [Line Items]
Senior notes	[4]																800,000,000		800,000,000
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount																								800,000,000
5.30% Unsecured Senior Notes due November 15, 2043 [Member]
Debt Instrument [Line Items]
Senior notes	[4]																$ 400,000,000		400,000,000
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount																								$ 400,000,000
2011 Term Loan due October 26, 2016 [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Extinguishment of Debt, Amount												$ 360,000,000
2.95% Unsecured Senior Notes due May 15, 2023 [Member] | Tender Offer [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Repayments of Debt														$ 578,300,000
2.95% Unsecured Senior Notes due May 15, 2023 [Member] | Redemption [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Repayments of Debt										$ 28,500,000
Senior notes [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Repayments of Debt											$ 1,100,000,000
5.125% Unsecured Senior Notes due December 12, 2017 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																	5.125%
Debt Instrument, Maturity Date																	Dec. 12, 2017
Senior notes	[1]																$ 335,000,000	[2]	$ 0
Omega [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date				Jan. 01, 2016	Jan. 01, 2016
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	[5]																				$ 1,471,000,000
Gains (Losses) on Extinguishment of Debt [Abstract]
Extinguishment of Debt, Amount			$ 539,100,000
Omega [Member] | 5.125% Retail Bond [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				5.125%																	5.125%
Debt Instrument, Maturity Date				Jan. 01, 2017	Jan. 01, 2017
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt																					$ 326,700,000
Omega [Member] | Over Draft [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt																					$ 56,000,000
Omega [Member] | 4.5% Retail Bond [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				4.50%																	4.50%
Debt Instrument, Maturity Date				Jan. 01, 2017	Jan. 01, 2017
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt																					$ 196,000,000
Omega [Member] | 5.0% Retail Bond [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				5.00%																	5.00%
Debt Instrument, Maturity Date				Jan. 01, 2019	Jan. 01, 2019
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt																					$ 130,700,000
Omega [Member] | Credit facility indebtedness [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt																					$ 544,500,000
Omega [Member] | 6.19% Senior Note [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.19%																	6.19%
Omega [Member] | 5.1045% Senior Note [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				5.1045%																	5.1045%
Debt Instrument, Maturity Date				Jan. 01, 2023	Jan. 01, 2023
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt																					$ 147,000,000
Perrigo Co PLC [Member]
Debt Instrument [Line Items]
Total long-term debt, less current portion																	$ 5,246,800,000
Omega [Member]
Debt Instrument [Line Items]
Amount debt exceeded par value					$ 101,900,000
Omega [Member] | Omega [Member] | 6.19% Senior Note [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt																					$ 20,000,000
Euro Member Countries, Euro | 2014 Euro-Denominated Term Loan due December 5, 2019 additional draw [Domain]
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount | €																						300.0
Euro Member Countries, Euro | 2014 Euro-Denominated Term Loan due December 5, 2019 [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Debt Instrument, Face Amount | €																						€ 500.0
Euro Member Countries, Euro | Bridge Credit Agreements [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity | €								€ 1,750.0
Euro Member Countries, Euro | Omega [Member]
Gains (Losses) on Extinguishment of Debt [Abstract]
Extinguishment of Debt, Amount | €		€ 500.0
Euro Member Countries, Euro | Omega [Member] | 5.125% Retail Bond [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt | €				€ 300.0
Euro Member Countries, Euro | Omega [Member] | Over Draft [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt | €				51.4
Euro Member Countries, Euro | Omega [Member] | 4.5% Retail Bond [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt | €				180.0
Euro Member Countries, Euro | Omega [Member] | 5.0% Retail Bond [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt | €				120.0
Euro Member Countries, Euro | Omega [Member] | Credit facility indebtedness [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt | €				500.0
Euro Member Countries, Euro | Omega [Member] | 5.1045% Senior Note [Member]
Debt Instrument [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt | €				135.0
Euro Member Countries, Euro | Omega [Member]
Debt Instrument [Line Items]
Amount debt exceeded par value | €				€ 93.6

[1] Debt assumed from Omega.

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

[3] (1) Public bonds issued on December 2, 2014, discussed below collectively as the "2014 Bonds."

[4] (2) Private placement unsecured senior notes with registration rights as of June 28, 2014 and public bonds as of October 1, 2014, discussed below collectively as the "2013 Bonds."

[5] Omega and Gelcaps opening balance sheets are preliminary.