Other Non-current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Other Liabilities, Noncurrent [Abstract]
Income taxes payable	$ 178.9	$ 199.2
Contingent consideration payable	445.2	435.4
Other non-current liabilities	94.6	102.1
Other noncurrent liabilities, total	$ 718.7	$ 736.7