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Employee Incentive Plans (Tables)
 12 Months Ended
Jan. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Expense by Award Type Stock-based compensation expense by award type was as follows:
 Year Ended January 31,
 202320222021
(dollars in millions)
Stock options$82 $132 $21 
RSUs 464 335 164 
ESPP 19 15 10 
Restricted stock awards112 84 — 
Total $677 $566 $195 
Schedule of Stock-based Compensation Expense by Statement of Operations Location Stock-based compensation expense was recorded in the following cost and expense categories in the consolidated statements of operations:
 Year Ended January 31,
 202320222021
(dollars in millions)
Cost of revenue: 
Subscription$69 $49 $21 
Professional services and other14 12 9 
Research and development275 193 63 
Sales and marketing159 136 53 
General and administrative160 176 49 
Total$677 $566 $195 
Schedule of Stock Option Activity A summary of stock option activity and related information was as follows:
 
Number of
Options 
(in thousands)
Weighted-
Average
Exercise
Price 
Weighted-
Average
Remaining
Contractual
Term
(Years)
Aggregate
Intrinsic Value
(in millions)
Outstanding as of January 31, 20227,984 $39.59 5.2$1,314 
Exercised (1,416)11.92 
Expired(26)189.80 
Forfeited(189)80.67 
Outstanding as of January 31, 20236,353 $43.92 4.3$331 
As of January 31, 2023
Vested and expected to vest6,353 $43.92 4.3$331 
Vested and exercisable 5,729 $29.75 3.9$323 
Schedule of Black-Scholes Option Pricing Model Estimated Fair Value Assumptions The Company used the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:
 Year Ended January 31,
 202320222021
Expected volatility— %46 %45 %
Expected term (in years)0.06.36.3
Risk-free interest rate— %
1.03%
0.37% - 0.44%
Expected dividend yield— — — 
Schedule of Nonvested Restricted Stock Units Activity A summary of RSU activity (inclusive of market-based RSUs) and related information was as follows:
 Number of
RSUs
(in thousands)		Weighted-
Average
Grant Date Fair Value Per Share
Outstanding as of January 31, 20226,226 $207.26 
Granted7,194 111.84 
Vested(2,556)180.81 
Forfeited(1,489)191.40 
Outstanding as of January 31, 20239,375 $143.77 
Schedule of ESPP Black-Scholes Option Pricing Model Estimated Fair Value Assumptions The Company estimated the fair value of ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions:
Year Ended January 31,
202320222021
Expected volatility
63% - 90%
44% - 48%
48% - 54%
Expected term (in years)
0.5 - 1.0
0.5 - 1.0
0.5 - 1.0
Risk-free interest rate
2.46% - 4.67%
0.06% - 0.29%
0.09% - 0.18%
Expected dividend yield———