Quarterly Results

12 Months Ended

Dec. 31, 2015

Quarterly Results [Abstract]

Quarterly Results

22.Quarterly Results (unaudited)

The following table sets forth selected unaudited quarterly data for the periods shown as revised (U.S. dollars in millions, except per share amounts):

	2014								2015
	1st Quarter		2nd Quarter		3rd Quarter		4th Quarter		1st Quarter		2nd Quarter		3rd Quarter		4th Quarter
Revenue	$	671.1	$	650.0	$	638.8	$	609.6	$	543.3	$	560.2	$	571.3	$	572.2
Gross profit		564.4		494.0		529.5		503.1		438.3		449.9		418.6		450.8
Operating income		101.2		54.7		105.0		91.3		68.6		71.8		42.5		61.7
Net income		54.9		19.5		68.3		46.5		36.3		44.7		16.3		35.8
Net income per share:
Basic		0.93		0.33		1.15		0.79		0.62		0.76		0.28		0.63
Diluted		0.90		0.32		1.12		0.77		0.60		0.75		0.28		0.62