Revenues - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) wholesaler	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Number of wholesalers | wholesaler	2
Percentage of total revenues	15.10%	14.70%	15.90%
Revenues	$ 10,981.7	$ 13,444.6	$ 14,377.9
Other
Disaggregation of Revenue [Line Items]
Revenues	476.3	774.6	707.7
Other corporate
Disaggregation of Revenue [Line Items]
Revenues	427.7	719.1	584.5
Remaining performance obligation, amount		153.8		$ 500.0
Bioverativ | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 18.2	48.6	$ 383.2
Contract Manufacturing Customer | Other corporate
Disaggregation of Revenue [Line Items]
Revenues		$ 346.2
Distributor One
Disaggregation of Revenue [Line Items]
Percentage of revenue from major distributors	28.80%	30.50%	30.00%
Percentage receivables of wholesale distributor accounted in consolidated receivables	21.90%	21.10%
Distributor Two
Disaggregation of Revenue [Line Items]
Percentage of revenue from major distributors	10.10%	15.30%	17.20%
Percentage receivables of wholesale distributor accounted in consolidated receivables	10.20%	8.50%