v3.20.4
Business Combinations - Purchase Price Allocation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 29, 2021
Jan. 30, 2021
Feb. 01, 2020
Sep. 19, 2019
Jul. 06, 2018
Business Acquisition [Line Items]          
Goodwill   $ 5,336,961 $ 5,337,405    
Avera          
Business Acquisition [Line Items]          
Inventory   106,465 106,465    
Prepaid expenses and other current assets   17,495 17,495    
Property and equipment, net   25,677 25,677    
Acquired intangible assets   379,000 379,000    
Other non-current assets   6,870 6,870    
Goodwill   129,998 129,392    
Accrued liabilities   (64,155) (64,155)    
Deferred tax liabilities   (7,200) (6,594)    
Other non-current liabilities   (650) (650)    
Total merger consideration   593,500 $ 593,500    
Measurement Period Adjustment, Inventories $ 0        
Measurement Period Adjustment, Prepaid expenses and other current assets 0        
Measurement Period Adjustment, Property and equipment, net 0        
Measurement Period Adjustment, Acquired intangible assets, net 0        
Measurement Period Adjustment, Other non-current assets 0        
Measurement Period Adjustment, Goodwill 606        
Measurement Period Adjustment, Accrued liabilities 0        
Measurement Period Adjustment, Deferred tax liabilities (606)        
Measurement Period Adjustment, Other non-current liabilities 0        
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period 0        
Aquantia          
Business Acquisition [Line Items]          
Inventory   33,900   $ 33,900  
Acquired intangible assets   193,000   193,000  
Other non-current assets   36,172   35,123  
Goodwill   226,545   227,594  
Cash and short-term investments   27,914   27,914  
Accrued liabilities   (21,813)   (21,813)  
Other, net   6,471   6,471  
Total merger consideration   502,189   $ 502,189  
Measurement Period Adjustment, Inventories 0        
Measurement Period Adjustment, Acquired intangible assets, net 0        
Measurement Period Adjustment, Other non-current assets 1,049        
Measurement Period Adjustment, Cash and short-term investments 0        
Measurement Period Adjustment, Goodwill (1,049)        
Measurement Period Adjustment, Accrued liabilities 0        
Measurement Period Adjustment, Other, net 0        
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments Related to Previous Period $ 0        
Cavium          
Business Acquisition [Line Items]          
Inventory   330,778      
Prepaid expenses and other current assets   19,890      
Property and equipment, net   115,428      
Acquired intangible assets   2,744,000      
Other non-current assets   89,139      
Goodwill   3,498,196     $ 3,500,000
Cash and cash equivalents   180,989      
Accounts receivable   112,270      
Assets held for sale   483      
Accrued liabilities   (126,007)      
Deferred tax liabilities   (79,995)      
Other non-current liabilities   (16,099)      
Accounts payable   (52,383)      
Accrued employee compensation   (34,813)      
Deferred income   (2,466)      
Current portion of long-term debt   (6,123)      
Liabilities held for sale   (3,032)      
Long-term debt   (600,005)      
Non-current income taxes payable   (8,454)      
Total merger consideration   $ 6,161,796