v3.26.1
Revenues Reserves for Discounts and Allowances (Details 1)
$ in Millions
 6 Months Ended
Jun. 30, 2026
USD ($)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]  
Beginning Balance $ 1,210.8
Apellis acquisition 52.0
Current Provisions Relating To Sales In Current Year 1,805.3
Adjustments Relating To Prior Years (57.5)
Payments/Returns Relating To Sales in Current Year (1,061.2)
Payments/Returns Relating To Sales in Prior Year (706.4)
Ending Balance 1,243.0
Discounts  
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]  
Beginning Balance 115.7
Apellis acquisition 13.3
Current Provisions Relating To Sales In Current Year 439.8
Adjustments Relating To Prior Years (2.0)
Payments/Returns Relating To Sales in Current Year (316.1)
Payments/Returns Relating To Sales in Prior Year (129.0)
Ending Balance 121.7
Contractual adjustments  
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]  
Beginning Balance 1,046.1
Apellis acquisition 32.3
Current Provisions Relating To Sales In Current Year 1,352.1
Adjustments Relating To Prior Years (69.2)
Payments/Returns Relating To Sales in Current Year (745.0)
Payments/Returns Relating To Sales in Prior Year (549.5)
Ending Balance 1,066.8
Returns  
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]  
Beginning Balance 49.0
Apellis acquisition 6.4
Current Provisions Relating To Sales In Current Year 13.4
Adjustments Relating To Prior Years 13.7
Payments/Returns Relating To Sales in Current Year (0.1)
Payments/Returns Relating To Sales in Prior Year (27.9)
Ending Balance $ 54.5