CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Net product sales	$ 408.2	$ 384.7	$ 1,189.8	$ 1,056.4
Other		1.5		4.5
Total revenues	408.2	386.2	1,189.8	1,060.9
Operating expenses:
Cost of product sales	23.6	6.9	44.3	43.7
Research and development	45.9	9.6	80.7	169.2
Selling, general and administrative	100.1		177.3	304.0
Selling, general and administrative		(17.3)
Total operating expenses	169.6		302.3	516.9
Total operating expenses		(0.8)
Operating income	238.6	387.0	887.5	544.0
Other income (expense):
Interest expense	(0.5)	(0.8)	(1.7)	(4.2)
Gain on sale of intangible asset		350.0		350.0
Other, net	1.0	0.6	2.9	(1.4)
Total other income, net	0.5	349.8	1.2	344.4
Income before income taxes	239.1	736.8	888.7	888.4
Income tax expense	(77.3)	(272.4)	(285.3)	(341.4)
Net income	$ 161.8	$ 464.4	$ 603.4	$ 547.0
Net income per common share:
Basic (in dollars per share)	$ 3.75	$ 10.20	$ 13.62	$ 11.86
Diluted (in dollars per share)	$ 3.50	$ 9.24	$ 12.76	$ 10.58
Weighted average number of common shares outstanding:
Basic (in shares)	43.2	45.5	44.3	46.1
Diluted (in shares)	46.2	50.2	47.3	51.7