v3.20.4
Goodwill and Acquired Intangible Assets, Net (Tables)
 12 Months Ended
Jan. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets by Major Class As of January 30, 2021 and February 1, 2020, net carrying amounts are as follows (in thousands, except for weighted-average remaining amortization period):
January 30, 2021
Gross
Carrying
Amounts		Accumulated
Amortization
and
Write-Offs		Net
Carrying
Amounts		Weighted -Average Remaining Amortization Period (Years)
Developed technologies$2,454,000 $(724,215)$1,729,785 5.54
Customer contracts and related relationships643,000 (228,845)414,155 5.62
Trade names23,000 (14,240)8,760 2.20
Total acquired amortizable intangible assets3,120,000 (967,300)2,152,700 5.54
IPR&D118,000 — 118,000 n/a
Total acquired intangible assets$3,238,000 $(967,300)$2,270,700 

The Company regularly analyzes the results of its business to determine whether events or circumstances exist that indicate whether the carrying amount of the intangible assets may not be recoverable. During the second quarter of fiscal 2021, impairment charges of $50.3 million related to certain intangible assets acquired from Cavium were recognized as part of restructuring actions. The gross carrying amounts and the accumulated amortization of those impaired intangible assets were excluded from the table above. See “Note 6 - Restructuring” for additional information.
February 1, 2020
Gross
Carrying
Amounts		Accumulated
Amortization
and
Write-Offs		Net
Carrying
Amounts		Weighted-Average Remaining Amortization Period (Years)
Developed technologies$2,511,000 $(413,735)$2,097,265 6.41
Customer contracts and related relationships643,000 (128,939)514,061 6.61
Trade names23,000 (8,726)14,274 2.96
Total acquired amortizable intangible assets3,177,000 (551,400)2,625,600 6.43
IPR&D139,000 — 139,000 n/a
Total acquired intangible assets$3,316,000 $(551,400)$2,764,600 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
The following table presents the estimated future amortization expense of acquired amortizable intangible assets as of January 30, 2021 (in thousands):
Fiscal YearAmount
2022$430,605 
2023417,527 
2024396,503 
2025356,602 
2026271,746 
Thereafter279,717 
$2,152,700