Results of discontinued operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Results of discontinued operations
Loss from discontinued operations, net of taxes	$ (22.7)	$ (216.2)
Goodwill impairment charge	0	7.1
DERMAGRAFT
Results of discontinued operations
Product Revenues	1.9	18.5
Loss from discontinuing operations before income taxes	(35.8)	(227.9)
Income tax expense from discontinued operations	13.1	11.7
Loss from discontinued operations, net of taxes	(22.7)	(216.2)
Continung operations
Results of discontinued operations
Goodwill impairment charge		7.1
Discontinued operations
Results of discontinued operations
Goodwill impairment charge		191.8
Discontinued operations \| DERMAGRAFT
Results of discontinued operations
Goodwill impairment charge		$ 191.8

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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