Reserves for Discounts and Allowances (Details 1) $ in Millions	3 Months Ended
	Mar. 31, 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	1,033.3
Adjustments Relating To Prior Years	(16.9)
Payments/Returns Relating To Sales in Current Year	(383.7)
Payments/Returns Relating To Sales in Prior Year	(549.8)
Ending Balance	1,281.8
Discounts
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	131.1
Current Provisions Relating To Sales In Current Year	200.7
Adjustments Relating To Prior Years	(0.5)
Payments/Returns Relating To Sales in Current Year	(73.4)
Payments/Returns Relating To Sales in Prior Year	(112.2)
Ending Balance	145.7
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	827.9
Adjustments Relating To Prior Years	(15.9)
Payments/Returns Relating To Sales in Current Year	(310.3)
Payments/Returns Relating To Sales in Prior Year	(432.8)
Ending Balance	1,096.2
Returns
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	40.5
Current Provisions Relating To Sales In Current Year	4.7
Adjustments Relating To Prior Years	(0.5)
Payments/Returns Relating To Sales in Current Year	0.0
Payments/Returns Relating To Sales in Prior Year	(4.8)
Ending Balance	$ 39.9