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Amount of cash paid to acquire the entity.

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Month, date and year when the results of operations of the acquired entity began to be included in the income statement of the combined entity. For disclosure purposes, the effective date of an acquisition equates to the acquisition date, when acquisition date is defined as the date on which the acquirer obtained control of the acquired entity. The effective date of an acquisition may be either earlier or later than the date on which the acquisition agreement was executed (closed).

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Percentage of voting equity interests acquired in the business combination.

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The amount of cash and cash equivalents acquired in a business combination.

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The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.

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The amount of acquisition cost of a business combination allocated to receivables.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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Amount borrowed under the credit facility as of the balance-sheet date.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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Business Combinations (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 28, 2011	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Business Acquisition, Cost of Acquired Entity
Short-term debt		$ 30.0		$ 30.0
Additional Business Combination Disclosures
Revenues		1,086.1	874.3	3,121.2	2,539.9
Integration and Acquisition Cost		5.3	5.8	7.9	6.4
Net Income (Loss)		192.9	96.3	609.7	422.7
ABH Member
Business Acquisition, Date of Acquisition
Effective Date of Acquisition				2011-06-28
Period Results Included in Combined Entity				2011-06-28
Business Acquisition, Entity Acquired and Reason for Acquisition
Reason for Business Combination	The acquisition of Adcanced BioHealings ("ABH") adds the DERMAGRAFT product, a regenerative bio-engineered skin substitute, to Shire’s portfolio. The acquisition combines ABH’s expertise and commercial capability in regenerative medicine with the Company’s strengths and expertise in human cell biological manufacturing.
Percentage of Voting Interests Acquired		100.00%		100.00%
Business Acquisition, Cost of Acquired Entity
Cost of Acquired Entity, Cash Paid	739.6
Business Acquisition, Purchase Price Allocation, Current Assets
Cash and Cash Equivalents	14.6
Accounts receivables	30.1
Inventory	30.7
Deferred Tax Asset, Current	32.3
Other Current Assets	7.9
Purchase Price Allocation, Current Assets, Total	115.6
Business Acquisition, Purchase Price Allocation, Noncurrent Assets
Property, Plant and Equipment	16.5
Goodwill	193.7
DERMAGRAFT product technology	710.0
Other Intangible Assets	1.5
Other Noncurrent Assets	0.1
Purchase Price Allocation, Assets Acquired, Total	1,037.4
Business Acquisition, Purchase Price Allocation, Current Liabilities
Accounts Payable and Other Current Liabilities	49.4
Business Acquisition, Purchase Price Allocation, Noncurrent Liabilities
Long term debt, less current portion	9.1
Deferred Tax Liabilities, Noncurrent	238.3
Other Noncurrent Liabilities	1.0
Liabilities Assumed, Total	297.8
Assets Acquired (Liabilities Assumed), Net, Total	739.6
Additional Business Combination Disclosures
Revenues		50.0	0	52.0	0
Integration and Acquisition Cost		3.6	0	10.5	0
Net Income (Loss)		$ 4.5	$ 0	$ 5.1	$ 0