Fair Value Measurement (Assets and Liabilities That are Measured and Not Measured at Fair Value on a Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Financial liabilities:
Convertible bonds	$ 1,100.0		$ 0
Convertible Debt, Current			1,100.0
Impairment of Intangible Asset (Excluding Goodwill)	27.0	16.0
Estimated fair value
Financial liabilities:
Building financing obligation Fair value	10.3		9.7
Recurring Basis \| Carrying value
Financial assets:
Available-for-sale securities	22.4		7.4
Contingent consideration receivable	41.0		37.8
Foreign exchange contracts, asset	1.1		3.4
Financial liabilities:
Foreign exchange contracts, liability	0.8		0.4
Contingent consideration payable	133.4		0
Recurring Basis \| Level 1
Financial assets:
Available-for-sale securities	22.4		7.4
Contingent consideration receivable	0		0
Foreign exchange contracts, asset	0		0
Financial liabilities:
Foreign exchange contracts, liability	0		0
Contingent consideration payable	0		0
Recurring Basis \| Level 2
Financial assets:
Available-for-sale securities	0		0
Contingent consideration receivable	0		0
Foreign exchange contracts, asset	1.1		3.4
Financial liabilities:
Foreign exchange contracts, liability	0.8		0.4
Contingent consideration payable	0		0
Recurring Basis \| Level 3
Financial assets:
Available-for-sale securities	0		0
Contingent consideration receivable	41.0		37.8
Foreign exchange contracts, asset	0		0
Financial liabilities:
Foreign exchange contracts, liability	0		0
Contingent consideration payable	133.4		0
Recurring Basis \| Estimated fair value
Financial assets:
Available-for-sale securities	22.4		7.4
Contingent consideration receivable	41.0		37.8
Foreign exchange contracts, asset	1.1		3.4
Financial liabilities:
Foreign exchange contracts, liability	0.8		0.4
Contingent consideration payable	133.4		0
Nonrecurring Basis
Financial liabilities:
Impairment of Intangible Asset (Excluding Goodwill)	27.0
Fair value of IPR&D assets, determined at the time of the impairment review	77.0
Nonrecurring Basis \| Carrying value
Financial liabilities:
Convertible bonds	1,100.0
Convertible Debt, Current			1,100.0
Building financing obligation Carrying value	8.2		8.2
Nonrecurring Basis \| Estimated fair value
Financial liabilities:
Convertible bonds	1,221.1
Convertible Debt, Current			$ 1,309.7

The Carrying value as of the balance sheet date of capitalized lease obligations.

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

The fair value as of the balance sheet date of capitalized lease obligations.

+ References

No definition available.

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- Definition

Fair value, as of the balance sheet date, of potential payments under the contingent consideration arrangement including cash and shares.

+ References

No definition available.

+ Details

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- Definition

+ References

No definition available.

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- Definition

Impairment recognized during the period and allocated to the reportable segment that results from the write-down of intangible assets after comparing the implied fair value of reporting unit intangible assets with the carrying amount of that intangible assets, which are assessed at least annually for impairment. These intangible assets exclude goodwill.

+ References

No definition available.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6379932&loc=d3e22054-111558

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

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- Definition

The portion of the carrying value of long-term convertible debt as of the balance sheet date that is scheduled to be repaid within one year or in the normal operating cycle if longer. Convertible debt is a financial instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Carrying amount of long-term convertible debt as of the balance sheet date, net of the amount due in the next twelve months or greater than the normal operating cycle, if longer. The debt is convertible into another form of financial instrument, typically the entity's common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

+ References

No definition available.

+ Details

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- Definition

+ References

No definition available.

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- Definition

This element represents various capitalized rights and intangible assets, excluding goodwill, having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 33

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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