Reserves for Discounts and Allowances (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($)
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2015	$ 662.7
Current provisions relating to sales in current year	616.7
Adjustments relating to prior years	(1.4)
Payments/credits relating to sales in current year	(262.5)
Payments/credits relating to sales in prior years	(283.2)
Balance as of March 31, 2016	732.3
Discounts
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2015	56.1
Current provisions relating to sales in current year	127.9
Adjustments relating to prior years	(2.6)
Payments/credits relating to sales in current year	(74.3)
Payments/credits relating to sales in prior years	(48.0)
Balance as of March 31, 2016	59.1
Contractual Adjustments
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2015	548.7
Current provisions relating to sales in current year	480.1
Adjustments relating to prior years	1.1
Payments/credits relating to sales in current year	(187.9)
Payments/credits relating to sales in prior years	(229.7)
Balance as of March 31, 2016	612.3
Returns
Analysis of the amount of, and change in, reserves
Balance as of December 31, 2015	57.9
Current provisions relating to sales in current year	8.7
Adjustments relating to prior years	0.1
Payments/credits relating to sales in current year	(0.3)
Payments/credits relating to sales in prior years	(5.5)
Balance as of March 31, 2016	$ 60.9