Derivative Financial Instruments (Details 3) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
Net after-tax derivative activity recorded in accumulated other comprehensive income (loss)
Beginning balance gain (loss)		$ 4,296	$ (1,667)	$ 7,157	$ (113)
Net gains (losses) from changes in cash flow hedges		4,584	1,352	3,658	(706)
Net (gains) losses reclassified to earnings		(3,012)	681	(4,947)	1,185
Ending balance gain		5,868	366	5,868	366
Foreign exchange currency cash flow hedge unrealized gain to be recognized in cost of product sales or other income over the following 12 months		4,600		4,600
Cash flow hedges | Cost of product sales
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings
Gain (loss) recognized in OCI		5,343	1,866	4,196	(706)
Gain (loss) reclassified from accumulated OCI into earnings	[1]	3,193	(265)	4,943	(759)
Cash flow hedges | Other income/expense
Gains (losses) before taxes recognized on the derivative instruments designated as cash flow hedges in OCI and net earnings
Gain (loss) recognized in OCI		378	1	230	(106)
Gain (loss) reclassified from accumulated OCI into earnings	[1]	$ 330	$ (25)	$ 816	$ (56)

[1] The ineffective portion was immaterial during the three and six months ended August 1, 2015 and August 2, 2014 and was recorded in net earnings and included in interest income/expense.