v3.20.4
Goodwill and Acquired Intangible Assets, Net - Net Carrying Amounts and Weighted Average Amortization Period (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 30, 2021
Feb. 01, 2020
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts $ 3,120,000  
Accumulated Amortization and Write-Offs (967,300)  
Net Carrying Amounts $ 2,152,700  
Weighted average remaining amortization period 5 years 6 months 14 days  
IPR&D $ 118,000  
Gross Carrying Amounts, Total acquired intangible assets 3,238,000  
Net Carrying Amounts 2,270,700 $ 2,764,600
Cavium    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts   3,177,000
Accumulated Amortization and Write-Offs   (551,400)
Net Carrying Amounts   $ 2,625,600
Weighted average remaining amortization period   6 years 5 months 4 days
IPR&D   $ 139,000
Gross Carrying Amounts, Total acquired intangible assets   3,316,000
Net Carrying Amounts   2,764,600
Developed technologies    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts 2,454,000  
Accumulated Amortization and Write-Offs (724,215)  
Net Carrying Amounts $ 1,729,785  
Weighted average remaining amortization period 5 years 6 months 14 days  
Developed technologies | Cavium    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts   2,511,000
Accumulated Amortization and Write-Offs   (413,735)
Net Carrying Amounts   $ 2,097,265
Weighted average remaining amortization period   6 years 4 months 28 days
Customer contracts and related relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts $ 643,000  
Accumulated Amortization and Write-Offs (228,845)  
Net Carrying Amounts $ 414,155  
Weighted average remaining amortization period 5 years 7 months 13 days  
Customer contracts and related relationships | Cavium    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts   $ 643,000
Accumulated Amortization and Write-Offs   (128,939)
Net Carrying Amounts   $ 514,061
Weighted average remaining amortization period   6 years 7 months 9 days
Trade names    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts $ 23,000  
Accumulated Amortization and Write-Offs (14,240)  
Net Carrying Amounts $ 8,760  
Weighted average remaining amortization period 2 years 2 months 12 days  
Trade names | Cavium    
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amounts   $ 23,000
Accumulated Amortization and Write-Offs   (8,726)
Net Carrying Amounts   $ 14,274
Weighted average remaining amortization period   2 years 11 months 15 days