Reserves for Discounts and Allowances (Details) $ in Millions	6 Months Ended
	Jun. 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	1,082.7
Adjustments relating to prior years	(27.5)
Payments/credits relating to sales in current year	(642.8)
Payments/credits relating to sales in prior years	(305.8)
Balance as of June 30, 2015	590.4
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	209.2
Adjustments relating to prior years	0.4
Payments/credits relating to sales in current year	(158.0)
Payments/credits relating to sales in prior years	(43.3)
Balance as of June 30, 2015	55.9
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	854.4
Adjustments relating to prior years	(19.8)
Payments/credits relating to sales in current year	(483.9)
Payments/credits relating to sales in prior years	(254.7)
Balance as of June 30, 2015	483.1
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	19.1
Adjustments relating to prior years	(8.1)
Payments/credits relating to sales in current year	(0.9)
Payments/credits relating to sales in prior years	(7.8)
Balance as of June 30, 2015	$ 51.4