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Employee Benefit Plans - Inphi Acquisition-related Equity Awards and the Inphi 2010 EIP (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 29, 2022
Apr. 20, 2021
Inphi    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of awards assumed in acquisition   $ 589.7
Pre-acquisition service   $ 161.7
Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense to be recognized $ 606.0  
Inphi 2010 EIP    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of common stock issuable (in shares)   10,301,589
Inphi 2010 EIP | Inphi    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense to be recognized   $ 428.0
Inphi 2010 EIP | Inphi | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 3 years  
Inphi 2010 EIP | Inphi | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting period 4 years  
Inphi 2010 EIP | Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of common stock issuable (in shares)   127,249
Inphi 2010 EIP | Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of common stock issuable (in shares)   10,040,693
Inphi 2010 EIP | Performance Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of common stock issuable (in shares)   133,647