Reserves for Discounts and Allowances (Details 1) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	$ 1,198.9
Current Provisions Relating To Sales In Current Year	3,070.2
Adjustments Relating To Prior Years	(40.8)
Payments/Returns Relating To Sales in Current Year	(2,162.4)
Payments/Returns Relating To Sales in Prior Year	(794.1)
Ending Balance	1,271.8
Discounts
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	131.1
Current Provisions Relating To Sales In Current Year	589.6
Adjustments Relating To Prior Years	(1.0)
Payments/Returns Relating To Sales in Current Year	(457.9)
Payments/Returns Relating To Sales in Prior Year	(120.3)
Ending Balance	141.5
Contractual adjustments
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	1,027.3
Current Provisions Relating To Sales In Current Year	2,465.8
Adjustments Relating To Prior Years	(41.6)
Payments/Returns Relating To Sales in Current Year	(1,704.5)
Payments/Returns Relating To Sales in Prior Year	(658.4)
Ending Balance	1,088.6
Returns
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	40.5
Current Provisions Relating To Sales In Current Year	14.8
Adjustments Relating To Prior Years	1.8
Payments/Returns Relating To Sales in Current Year	0.0
Payments/Returns Relating To Sales in Prior Year	(15.4)
Ending Balance	$ 41.7