Reserves for Discounts and Allowances (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	$ 483.8
Current provisions relating to sales in current year	553.2
Adjustments relating to prior years	(18.5)
Payments/credits relating to sales in current year	(217.7)
Payments/credits relating to sales in prior years	(216.6)
Balance as of March 31, 2015	584.2
Discounts
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	47.6
Current provisions relating to sales in current year	101.8
Adjustments relating to prior years	(2.4)
Payments/credits relating to sales in current year	(50.3)
Payments/credits relating to sales in prior years	(41.3)
Balance as of March 31, 2015	55.4
Contractual Adjustments
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	387.1
Current provisions relating to sales in current year	441.2
Adjustments relating to prior years	(10.2)
Payments/credits relating to sales in current year	(166.7)
Payments/credits relating to sales in prior years	(170.7)
Balance as of March 31, 2015	480.7
Returns
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	49.1
Current provisions relating to sales in current year	10.2
Adjustments relating to prior years	(5.9)
Payments/credits relating to sales in current year	(0.7)
Payments/credits relating to sales in prior years	(4.6)
Balance as of March 31, 2015	$ 48.1

Adjustments to product revenue reserves relating to sales in prior years.

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- Definition

Current provisions to product revenue reserves relating to sales in current year.

+ References

No definition available.

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- Definition

Payments/ returns applied against product revenue reserves relating to current year.

+ References

No definition available.

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Payments/ returns applied against product revenue reserves relating to prior year.

+ References

No definition available.

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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