Business Acquisitions (Details) $ / shares in Units, € in Millions									3 Months Ended		12 Months Ended
		Sep. 15, 2015 USD ($)	Sep. 15, 2015 EUR (€)	Aug. 28, 2015 USD ($)	May. 12, 2015 USD ($)	Mar. 30, 2015 USD ($) $ / shares shares	Mar. 30, 2015 EUR (€) shares	Oct. 31, 2014 USD ($) products	Sep. 26, 2015 USD ($)	Sep. 27, 2014 USD ($)	Jun. 27, 2015 USD ($) shares	Nov. 08, 2013 USD ($)
Business Acquisition [Line Items]
Goodwill									$ 4,987,100,000		$ 4,971,900,000
Interest Income (Expense), Net									43,400,000	$ 25,900,000
Senior Notes									4,722,700,000		4,720,900,000	$ 2,300,000,000
Proceeds from Issuance or Sale of Equity											999,300,000
Goodwill, Purchase Accounting Adjustments									(87,200,000)
Naturwohl Pharma [Member]
Business Acquisition [Line Items]
Total purchase consideration	[1]	$ 150,400,000
Cash and cash equivalents	[1]	4,600,000
Accounts Receivable	[1]	3,300,000
Inventories	[1]	1,700,000
Prepaid Expense and Other Current Assets	[1]	0
Goodwill	[1]	63,500,000
Other intangible assets	[1]	107,300,000
Total Assets	[1]	180,400,000
Accounts Payable	[1]	2,800,000
Accrued liabilities	[1]	900,000
Current net deferred income tax liabilities	[1]	900,000
Noncurrent net deferred income tax liabilities	[1]	25,400,000
Total liabilities	[1]	30,000,000
Net assets acquired	[1]	$ 150,400,000
Business Acquisition, Effective Date of Acquisition		Sep. 15, 2015	Sep. 15, 2015
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Scar Away
Business Acquisition [Line Items]
Total purchase consideration	[1]			$ 27,000,000
Cash and cash equivalents	[1]			0
Accounts Receivable	[1]			900,000
Inventories	[1]			0
Prepaid Expense and Other Current Assets	[1]			100,000
Goodwill	[1]			4,900,000
Other intangible assets	[1]			21,100,000
Total Assets	[1]			27,000,000
Accounts Payable	[1]			0
Accrued liabilities	[1]			0
Current net deferred income tax liabilities	[1]			0
Noncurrent net deferred income tax liabilities	[1]			0
Total liabilities	[1]			0
Net assets acquired	[1]			$ 27,000,000
Business Acquisition, Effective Date of Acquisition				Aug. 28, 2015
GSK
Business Acquisition [Line Items]
Total purchase consideration	[1]			$ 223,600,000
Cash and cash equivalents	[1]			0
Accounts Receivable	[1]			0
Inventories	[1]			0
Prepaid Expense and Other Current Assets	[1]			0
Goodwill	[1]			48,700,000
Other intangible assets	[1]			174,900,000
Total Assets	[1]			223,600,000
Accounts Payable	[1]			0
Accrued liabilities	[1]			0
Current net deferred income tax liabilities	[1]			0
Noncurrent net deferred income tax liabilities	[1]			0
Total liabilities	[1]			0
Net assets acquired	[1]			$ 223,600,000
Business Acquisition, Effective Date of Acquisition				Aug. 28, 2015
Other [Member]
Business Acquisition [Line Items]
Total purchase consideration									8,700,000
Business acquisitions, number of products purchased									2
Gelcaps
Business Acquisition [Line Items]
Total purchase consideration					$ 36,400,000
Cash and cash equivalents					4,600,000
Accounts Receivable					8,500,000
Inventories					7,200,000
Current net deferred tax assets					600,000
Prepaid Expense and Other Current Assets					2,300,000
Property, Plant, and Equipment					6,000,000
Goodwill					4,600,000
Other intangible assets					11,000,000
Noncurrent Assets					400,000
Total Assets					45,200,000
Accounts Payable					3,400,000
Accrued liabilities					1,600,000
Accrued payroll					0
Short term debt					0
Noncurrent net deferred income tax liabilities					3,700,000
Long-term debt					0
Noncurrent Liabilities					100,000
Total liabilities					8,800,000
Net assets acquired					36,400,000
Accrued customer programs					$ 0
Business Acquisition, Effective Date of Acquisition					May 12, 2015
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Omega
Business Acquisition [Line Items]
Total purchase consideration						$ 2,983,200,000
Cash and cash equivalents						14,700,000
Accounts Receivable						264,700,000
Inventories						207,100,000
Current net deferred tax assets						7,600,000
Prepaid Expense and Other Current Assets						39,200,000
Property, Plant, and Equipment						130,800,000
Goodwill						1,426,100,000
Other intangible assets						3,919,100,000
Noncurrent Assets						2,400,000
Total Assets						6,011,700,000
Accounts Payable						243,100,000
Accrued liabilities						44,500,000
Accrued payroll						51,300,000
Short term debt						24,600,000
Noncurrent net deferred income tax liabilities						1,071,700,000
Long-term debt						1,471,000,000
Noncurrent Liabilities						82,500,000
Total liabilities						3,028,500,000
Net assets acquired						2,983,200,000
Business Combination, Acquisition Related Costs											387,000,000
Accrued customer programs						$ 39,800,000
Shares, Issued | shares						5,400,000
Business Acquisition, Effective Date of Acquisition						Mar. 30, 2015	Mar. 30, 2015
Shares, Outstanding | shares						685,348,257
Business Acquisition, Percentage of Voting Interests Acquired						95.77%
Treasury Stock, Shares, Acquired | shares						30,243,983	30,243,983
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory									(7,400,000)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment									9,600,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, net deferred taxes									31,600,000
Business Acquisition, Share Price | $ / shares						$ 167.64
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned						$ 904,900,000
Business Acquisition, Cash Exchange						2,078,300,000
Goodwill, Purchase Accounting Adjustments									(87,000,000)
Lumara [Member]
Business Acquisition [Line Items]
Total purchase consideration								$ 83,000,000
Cash and cash equivalents								0
Accounts Receivable								2,900,000
Inventories								1,500,000
Current net deferred tax assets								0
Prepaid Expense and Other Current Assets								400,000
Property, Plant, and Equipment								100,000
Goodwill								0
Other intangible assets								82,000,000
Noncurrent Assets								0
Total Assets								86,900,000
Accounts Payable								0
Accrued liabilities								3,900,000
Accrued payroll								0
Short term debt								0
Noncurrent net deferred income tax liabilities								0
Long-term debt								0
Noncurrent Liabilities								0
Total liabilities								3,900,000
Net assets acquired								83,000,000
Accrued customer programs								$ 0
Business Acquisition, Effective Date of Acquisition								Oct. 31, 2014
Number of formulations | products								3
Maximum [Member] | Omega
Business Acquisition [Line Items]
Indemnification available from acquired company's sellers | €							€ 277.0
Administration [Member] | Omega
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs											29,700,000
Interest Net [Member] | Omega
Business Acquisition [Line Items]
Interest Income (Expense), Net											23,700,000
Other Expense [Member] | Omega
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs											324,000,000
Loss on extinguishment of debt [Member] | Omega
Business Acquisition [Line Items]
Gains (Losses) on Extinguishment of Debt											9,600,000
Inventories [Member] | Gelcaps
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory					$ 600,000
Inventories [Member] | Omega
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory						15,100,000
Property, Plant and Equipment [Member] | Gelcaps
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment					$ 900,000
Property, Plant and Equipment [Member] | Omega
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment						41,500,000
Long-term Debt [Member] | Omega
Business Acquisition [Line Items]
Business combination fair value adjustment						101,900,000
Indefinite-lived Intangible Assets [Member] | Omega
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments									98,000,000
Indefinite-lived Intangible Assets [Member] | Omega
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments									18,400,000
2014 bonds [Member]
Business Acquisition [Line Items]
Senior Notes											$ 1,600,000,000
Common Stock [Member]
Business Acquisition [Line Items]
Stock Issued During Period, Shares, New Issues | shares											6,800,000
Euro Member Countries, Euro | Naturwohl Pharma [Member]
Business Acquisition [Line Items]
Total purchase consideration | €			€ 133.5
Euro Member Countries, Euro | GSK
Business Acquisition [Line Items]
Total purchase consideration				$ 200,000,000
Euro Member Countries, Euro | Other [Member]
Business Acquisition [Line Items]
Total purchase consideration									$ 7,900,000
Euro Member Countries, Euro | Maximum [Member] | Omega
Business Acquisition [Line Items]
Indemnification available from acquired company's sellers						248,000,000
Trademarks [Member] | Naturwohl Pharma [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life		15 years	15 years
Trademarks [Member] | Scar Away
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life				25 years
Trademarks [Member] | GSK
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life				25 years
Trademarks [Member] | Gelcaps
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life					25 years
Customer Relationships [Member] | Naturwohl Pharma [Member]
Business Acquisition [Line Items]
Other intangible assets	[1]	$ 33,800,000
Finite-Lived Intangible Asset, Useful Life		15 years	15 years
Customer Relationships [Member] | Scar Away
Business Acquisition [Line Items]
Other intangible assets	[1]			$ 9,000,000
Finite-Lived Intangible Asset, Useful Life				15 years
Customer Relationships [Member] | GSK
Business Acquisition [Line Items]
Other intangible assets	[1]			$ 42,500,000
Finite-Lived Intangible Asset, Useful Life				15 years
Customer Relationships [Member] | Gelcaps
Business Acquisition [Line Items]
Other intangible assets					$ 6,600,000
Finite-Lived Intangible Asset, Useful Life					20 years
Customer Relationships [Member] | Omega
Business Acquisition [Line Items]
Other intangible assets						$ 1,393,900,000
Finite-Lived Intangible Asset, Useful Life						21 years	21 years
Customer Relationships [Member] | Lumara [Member]
Business Acquisition [Line Items]
Other intangible assets								$ 0
Noncompete Agreements [Member] | Naturwohl Pharma [Member]
Business Acquisition [Line Items]
Other intangible assets	[1]	$ 300,000
Finite-Lived Intangible Asset, Useful Life		3 years	3 years
Noncompete Agreements [Member] | Scar Away
Business Acquisition [Line Items]
Other intangible assets	[1]			$ 500,000
Finite-Lived Intangible Asset, Useful Life				4 years
Noncompete Agreements [Member] | GSK
Business Acquisition [Line Items]
Other intangible assets	[1]			$ 0
Noncompete Agreements [Member] | Omega
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						3 years	3 years
Licensing Agreements [Member] | Naturwohl Pharma [Member]
Business Acquisition [Line Items]
Other intangible assets	[1]	$ 21,400,000
Finite-Lived Intangible Asset, Useful Life		3 years	3 years
Licensing Agreements [Member] | Scar Away
Business Acquisition [Line Items]
Other intangible assets	[1]			0
Licensing Agreements [Member] | GSK
Business Acquisition [Line Items]
Other intangible assets	[1]			0
Non-solicit agreement [Member] | Omega
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						2 years	2 years
Trademarks and Trade Names [Member] | Naturwohl Pharma [Member]
Business Acquisition [Line Items]
Other intangible assets	[1]	$ 51,800,000
Trademarks and Trade Names [Member] | Scar Away
Business Acquisition [Line Items]
Other intangible assets	[1]			11,600,000
Trademarks and Trade Names [Member] | GSK
Business Acquisition [Line Items]
Other intangible assets	[1]			$ 132,400,000
Trademarks and Trade Names [Member] | Gelcaps
Business Acquisition [Line Items]
Other intangible assets					$ 4,400,000
Trademarks and Trade Names [Member] | Omega
Business Acquisition [Line Items]
Other intangible assets						$ 2,492,600,000
Finite-Lived Intangible Asset, Useful Life						8 years	8 years
Trademarks and Trade Names [Member] | Lumara [Member]
Business Acquisition [Line Items]
Other intangible assets								0
Brands [Member] | Omega
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life						19 years	19 years
Developed Technology Rights [Member] | Gelcaps
Business Acquisition [Line Items]
Other intangible assets					0
Developed Technology Rights [Member] | Omega
Business Acquisition [Line Items]
Other intangible assets						$ 32,600,000
Developed Technology Rights [Member] | Lumara [Member]
Business Acquisition [Line Items]
Other intangible assets								0
Developed Technology Rights [Member] | Minimum [Member] | Omega
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life						4 years	4 years
Developed Technology Rights [Member] | Maximum [Member] | Omega
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life						13 years	13 years
Product Formulations [Member] | Gelcaps
Business Acquisition [Line Items]
Other intangible assets					$ 0
Product Formulations [Member] | Omega
Business Acquisition [Line Items]
Other intangible assets						$ 0
Product Formulations [Member] | Lumara [Member]
Business Acquisition [Line Items]
Other intangible assets								$ 82,000,000
Product Formulations [Member] | Minimum [Member] | Lumara [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life								8 years
Product Formulations [Member] | Maximum [Member] | Lumara [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life								12 years

[1] Opening balance sheets are preliminary.