Summary of significant accounting policies (Details) (USD $) In Millions	3 Months Ended	9 Months Ended	6 Months Ended
Sep. 30, 2010	Jun. 30, 2010 P M G [Member]	Sep. 30, 2010 P M G [Member]	Jun. 30, 2008 Infusion Pharmacy [Member]	Jun. 30, 2008 CMP [Member]
Discontinued Operations [Line Items]
Proceeds from sale of discontinued operation				$ 27.5
Pre-tax gain (loss) on sale of business	(8.3)			7.4	(1.3)
Impairment charges		$ 28.2	$ 28.2

Proceeds from sale of Discontinued operation.

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- Definition

Pretax gain (loss), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 43

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

-Subparagraph b

+ Details

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- Definition

Pretax provision recognizing a loss for initial, or subsequent, write-down to fair value (less cost to sell) of a disposal group that is classified as a component of the entity, which remains unsold as of the reporting date. May include the recognition of a pretax (gain) for a subsequent increase in fair value (less cost to sell), but not in excess of the cumulative loss previously recognized through write-downs.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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