UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Income Statement [Abstract]
Net revenue	$ 727,297	$ 656,568	$ 1,420,938	$ 1,319,020
Cost of goods sold	368,041	305,866	734,780	606,890
Gross profit	359,256	350,702	686,158	712,130
Operating expenses:
Research and development	277,139	266,354	556,723	533,221
Selling, general and administrative	112,794	113,990	234,821	223,995
Restructuring related charges	120,590	16,586	141,877	22,268
Total operating expenses	510,523	396,930	933,421	779,484
Operating loss	(151,267)	(46,228)	(247,263)	(67,354)
Interest income	577	1,077	1,635	2,345
Interest expense	(15,635)	(20,531)	(32,465)	(41,734)
Other income (loss), net	(440)	(2,197)	3,314	(2,313)
Interest and other income (loss), net	(15,498)	(21,651)	(27,516)	(41,702)
Loss before income taxes	(166,765)	(67,879)	(274,779)	(109,056)
Provision for income taxes	(8,872)	(10,548)	(3,853)	(3,275)
Net loss	$ (157,893)	$ (57,331)	$ (270,926)	$ (105,781)
Net income (loss) per share - basic (in dollars per share)	$ (0.24)	$ (0.09)	$ (0.41)	$ (0.16)
Net income (loss) per share - diluted (in dollars per share)	$ (0.24)	$ (0.09)	$ (0.41)	$ (0.16)
Weighted-average shares:
Basic (in shares)	667,574	663,603	665,541	661,280
Diluted (in shares)	667,574	663,603	665,541	661,280