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Stock-Based Compensation And Employee Benefit Plans (Tables)
12 Months Ended
Mar. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Schedule Of Assumptions Used In The Black-Scholes Valuation Model
The estimated assumptions used in the Black-Scholes valuation model to value our ESPP purchase rights were as follows:
 ESPP Purchase Rights
 Year Ended March 31,
 202320222021
Risk-free interest rate
3.1 - 5.0%
0.1 - 1.1%
0.1%
Expected volatility
27 - 31%
25 - 30%
32 - 39%
Weighted-average volatility
29%
27%
36%
Expected term
6 - 12 months
6 - 12 months
6 - 12 months
Expected dividends
0.8%
0.6 %0.3 %
Schedule Of Assumptions Used In Monte-Carlo Simulation Model
The assumptions used in the Monte-Carlo simulation model to value our market-based restricted stock units were as follows:
 Year Ended March 31,
202320222021
Risk-free interest rate
3.3%
0.4 %
0.2%
Expected volatility
33 - 56%
24 - 76%
23 - 63%
Weighted-average volatility
43%
40%
37%
Expected dividendsNoneNoneNone
Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award
The following table summarizes our stock option activity for the fiscal year ended March 31, 2023:
Options
(in thousands)
Weighted-
Average
Exercise Prices
Weighted-
Average
Remaining
Contractual
Term  (in years)
Aggregate
Intrinsic Value
(in millions)
Outstanding as of March 31, 2022
286 $39.28 
Granted123.23 
Exercised(168)40.10 
Forfeited, cancelled or expired(1)64.95 
Outstanding as of March 31, 2023
121 $40.43 2.00$10 
Vested and expected to vest121 $40.43 2.00$10 
Exercisable as of March 31, 2023
120 $40.25 1.99$10 
The following table summarizes our restricted stock units activity, excluding performance-based and market-based restricted stock unit activity which is discussed below, for the fiscal year ended March 31, 2023:
Restricted
Stock Units
(in thousands)
Weighted-
Average Grant
Date Fair Values
Outstanding as of March 31, 2022
6,682 $129.57 
Granted5,391 126.41 
Vested(3,649)126.50 
Forfeited or cancelled(922)131.56 
Outstanding as of March 31, 2023
7,502 $128.54 
The following table summarizes our performance-based restricted stock unit activity, presented with the maximum number of shares that could potentially vest, for the fiscal year ended March 31, 2023:
Performance-
Based Restricted
Stock Units
(in thousands)
Weighted-
Average Grant
Date Fair Value
Outstanding as of March 31, 2022
190 $142.60 
Granted509 127.98 
Vested(73)142.60 
Forfeited or cancelled(69)136.28 
Outstanding as of March 31, 2023
557 $130.03 
The following table summarizes our market-based restricted stock unit activity, presented with the maximum number of shares that could potentially vest, for the year ended March 31, 2023:
Market-Based
Restricted  Stock
Units
(in thousands)
Weighted-
Average  Grant
Date Fair Value
Outstanding as of March 31, 2022
1,321 $134.69 
Granted178 176.70 
Vested(95)114.97 
Forfeited or cancelled(582)129.16 
Outstanding as of March 31, 2023
822 $149.98 
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity
The following table summarizes our ESPP activity for fiscal years ended March 31, 2023, 2022 and 2021:
Shares Issued
(in millions)
Exercise Prices for Purchase RightsWeighted-Average Fair Values of Purchase Rights
Fiscal Year 2021
0.7 
$74.70 - $119.37
$29.80 
Fiscal Year 2022
0.6 
$113.39 - $118.14
$35.94 
Fiscal Year 2023
0.7 
$96.34 - $111.86
$33.91 
Schedule Of Stock-Based Compensation Expense By Statement Of Operations The following table summarizes stock-based compensation expense resulting from stock options, restricted stock units, market-based restricted stock units, performance-based restricted stock units, and the ESPP purchase rights included in our Consolidated Statements of Operations (in millions):
 Year Ended March 31,
 202320222021
Cost of revenue$$$
Research and development367 356 285 
Marketing and sales59 54 46 
General and administrative115 112 99 
Stock-based compensation expense$548 $528 $435 
Shares Repurchased and Retired
The following table summarizes total shares repurchased during fiscal years 2023, 2022, and 2021:
May 2018 ProgramNovember 2020 ProgramAugust 2022 ProgramTotal
(In millions)SharesAmountSharesAmountSharesAmountSharesAmount
Fiscal Year 2021
0.7 $78 4.9 $651 — $— 5.6 $729 
Fiscal Year 2022
— $— 9.5 $1,300 — $— 9.5 $1,300 
Fiscal Year 2023
— $— 5.1 $650 5.3 $645 10.4 $1,295