Goodwill (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended						6 Months Ended		0 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Continung operations	Jun. 30, 2013 Continung operations	Jun. 30, 2014 Discontinued operations	Jun. 30, 2013 Discontinued operations	Jun. 30, 2014 Viropharma	Jan. 24, 2014 Viropharma	Jun. 11, 2014 Lumena	Jun. 30, 2014 Lumena	Jun. 30, 2013 Former RM reporting unit
Goodwill [Line Items]
Goodwill arising on business acquired	$ 1,662.7	$ 170.3					$ 1,535.8		$ 123.9	$ 123.9
Goodwill [Roll Forward]
As at January 1,	624.6	644.5						1,535.8
Acquisition	1,662.7	170.3					1,535.8		123.9	123.9
Goodwill impairment charge			0	(7.1)	0	(191.8)					198.9
Foreign currency translation	(3.9)	(4.3)
As at June 30,	$ 2,283.4	$ 611.6						$ 1,535.8