Selected Quarterly Data

12 Months Ended

Dec. 31, 2014

Selected Quarterly Financial Information [Abstract]

Selected Quarterly Data

	Three Months Ended
	March 31, 2014		June 30, 2014		September 30, 2014		December 31, 2014
Revenue	$	464.7	$	512.2	$	550.1	$	604.7
Gross profit	$	315.4	$	344.4	$	360.6	$	393.4
Net income (1)(2)	$	44.3	$	104.0	$	123.7	$	146.8
Net income per common share
Basic	$	1.16	$	2.82	$	3.43	$	4.03
Diluted	$	1.13	$	2.77	$	3.35	$	3.94
(1) Includes one-time discrete tax benefits as follows:
Audit settlement and expiration of the statutes of limitations in multiple jurisdictions	$	0.2	$	—	$	0.2	$	19.9
Reinstatement of the 2014 federal R&D tax credit	$	—	$	—	$	—	$	5.0
(2) Includes pre-tax charges relating to tolled product liability claims	$	67.4	$	9.6	$	—	$	5.4
	Three Months Ended
	March 31, 2013		June 30, 2013		September 30, 2013		December 31, 2013
Revenue	$	611.4	$	578.5	$	499.0	$	576.2
Gross profit	$	434.3	$	405.2	$	356.7	$	398.0
Net income (1)	$	188.9	$	159.1	$	156.8	$	166.2
Net income per common share
Basic	$	4.69	$	3.99	$	4.06	$	4.36
Diluted	$	4.56	$	3.90	$	3.99	$	4.28
(1) Includes one-time discrete tax benefits as follows:
Expiration of the statutes of limitations in multiple jurisdictions	$	—	$	—	$	26.2	$	0.5
Reinstatement of the 2012 federal R&D tax credit	$	7.5	$	—	$	—	$	0.7