Commitments and Contingencies (Commitments and Loss Contingency) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Clinical Testing
Other Commitments [Line Items]
Commitment amount	$ 1,242.1	$ 1,037.4
Contract Manufacturing
Other Commitments [Line Items]
Commitment amount	483.9	528.9
Commitments expected to be paid in next year	189.7
Other Purchasing Commitment
Other Commitments [Line Items]
Commitment amount	1,523.2	1,745.4
Commitments expected to be paid in next year	682.7
Investment Commitment
Other Commitments [Line Items]
Commitment amount	54.1	76.4
Capital Commitment
Other Commitments [Line Items]
Commitment amount	145.9	$ 100.5
Baxter related tax indemnification
Other Commitments [Line Items]
Net tax indemnification amount	$ 25.5