Reserves for Discounts and Allowances (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	$ 483.8
Current provisions relating to sales in current year	1,636.4
Adjustments relating to prior years	(37.0)
Payments/credits relating to sales in current year	(1,151.3)
Payments/credits relating to sales in prior years	(321.2)
Balance as of September 30, 2015	610.7
Discounts
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	47.6
Current provisions relating to sales in current year	332.0
Adjustments relating to prior years	(1.3)
Payments/credits relating to sales in current year	(277.9)
Payments/credits relating to sales in prior years	(40.7)
Balance as of September 30, 2015	59.7
Contractual Adjustments
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	387.1
Current provisions relating to sales in current year	1,278.0
Adjustments relating to prior years	(20.9)
Payments/credits relating to sales in current year	(871.8)
Payments/credits relating to sales in prior years	(271.6)
Balance as of September 30, 2015	500.8
Returns
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2014	49.1
Current provisions relating to sales in current year	26.4
Adjustments relating to prior years	(14.8)
Payments/credits relating to sales in current year	(1.6)
Payments/credits relating to sales in prior years	(8.9)
Balance as of September 30, 2015	$ 50.2