v3.22.0.1
Stock-Based Compensation (Tables)
 12 Months Ended
Jan. 30, 2022
Share-based Payment Arrangement [Abstract]  
Stock-based compensation expense, net of amounts capitalized as inventory
Our Consolidated Statements of Income include stock-based compensation expense, net of amounts allocated to inventory, as follows:
 Year Ended
January 30,
2022		January 31,
2021		January 26,
2020
 (In millions)
Cost of revenue$141 $88 $39 
Research and development1,298 860 540 
Sales, general and administrative565 449 265 
Total$2,004 $1,397 $844 
Summary of equity awards
The following is a summary of equity awards granted under our equity incentive plans:
Year Ended
January 30,
2022		January 31,
2021		January 26,
2020
(In millions, except per share data)
RSUs, PSUs and Market-based PSUs
Awards granted18 36 28 
Estimated total grant-date fair value$3,492 $2,764 $1,282 
Weighted average grant-date fair value per share$190.69 $76.81 $46.12 
ESPP
Shares purchased5 4 4 
Weighted average price per share$56.36 $34.80 $37.19 
Weighted average grant-date fair value per share$23.24 $16.91 $16.22 
Summary of ESPP valuation assumptions
The fair value of shares issued under our ESPP have been estimated with the following assumptions:
 Year Ended
 January 30,
2022		January 31,
2021		January 26,
2020
(Using the Black-Scholes model)
ESPP
Weighted average expected life (in years)
0.1-2.0
0.1-2.0
0.1-2.0
Risk-free interest rate
—%-0.5%
0.1%-1.6%
1.5%-2.6%
Volatility
20%-58%
26%-89%
30%-82%
Dividend yield
0.1%
0.1%-0.3%
0.3%-0.4%
Schedule of equity award transactions
The following is a summary of our equity award transactions under our equity incentive plans: 
RSUs, PSUs and Market-based PSUs Outstanding
 Number of SharesWeighted Average Grant-Date Fair Value
(In millions, except per share data)
Balances, January 31, 202159 $66.17 
Granted18 $190.69 
Vested restricted stock(29)$66.67 
Canceled and forfeited(2)$86.47 
Balances, January 30, 202246 $114.19 
Vested and expected to vest after January 30, 202246 $113.84