Hemophilia Spin-Off Hemophilia Spin-Off (Details) - USD ($) $ in Millions	Feb. 01, 2017	Dec. 31, 2016
Assets and Liabilities Distributed to Bioverativ [Line Items]
Goodwill		$ 0.0
Bioverativ
Assets and Liabilities Distributed to Bioverativ [Line Items]
Cash	$ 302.7
Accounts Receivable	144.7
Inventory	116.1
Property, Plant and Equipment, net	20.2
Intangible Assets, net	56.8
Goodwill	314.1
Other, net	53.7
Assets Transfered, net	1,008.3
Accrued Expenses and Other Current Liabilities	87.8
Other Long-Term Liabilities	67.7
Liabilities Transferred, net	$ 155.5