Reserves for Discounts and Allowances (Details 1) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	$ 1,051.3
Current Provisions Relating To Sales In Current Year	2,646.1
Adjustments Relating To Prior Years	(42.5)
Payments/Returns Relating To Sales in Current Year	(1,860.0)
Payments/Returns Relating To Sales in Prior Year	(709.1)
Ending Balance	1,085.8
Discounts
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	127.8
Current Provisions Relating To Sales In Current Year	480.3
Adjustments Relating To Prior Years	(0.4)
Payments/Returns Relating To Sales in Current Year	(349.3)
Payments/Returns Relating To Sales in Prior Year	(129.3)
Ending Balance	129.1
Contractual adjustments
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	888.8
Current Provisions Relating To Sales In Current Year	2,149.7
Adjustments Relating To Prior Years	(46.7)
Payments/Returns Relating To Sales in Current Year	(1,510.0)
Payments/Returns Relating To Sales in Prior Year	(564.4)
Ending Balance	917.4
Returns
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	34.7
Current Provisions Relating To Sales In Current Year	16.1
Adjustments Relating To Prior Years	4.6
Payments/Returns Relating To Sales in Current Year	(0.7)
Payments/Returns Relating To Sales in Prior Year	(15.4)
Ending Balance	$ 39.3