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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of Shares Reserved and Shares Available for Grant | As of December 31, 2024, shares reserved and available for issuance under the equity compensation plans were as follows (in thousands):
| Shares reserved |  | Shares available for grant
2004 Purchase Plan | 5,392 |  |  | 2,197 |
2020 Equity Incentive Plan | 3,290 |  |  | 1,858 |
Schedule of Disclosures for 2004 Purchase Plan | We provide the following disclosures for the 2004 Purchase Plan as of December 31 (shares in thousands):
| 2024 |  | 2023 |  | 2022
Weighted-average purchase price per share | $ | 626.35 |  |  | $ | 572.59 |  |  | $ | 568.29 |
Weighted-average grant date fair value per award for shares purchased | $ | 204.93 |  |  | $ | 206.83 |  |  | $ | 202.61 |
Number of shares purchased | 148 |  |  | 152 |  |  | 144 |
Schedule of Assumptions in Computation of Fair Value | We use the Black-Scholes option-pricing model to determine the fair value of shares under the 2004 Purchase Plan with the following assumptions during the years ended December 31:
| 2024 |  | 2023 |  | 2022
Range of dividend yield | 1.98% - 2.10% |  | 1.69% - 1.78% |  | 1.48% - 1.55%
Range of risk-free interest rate | 3.89% - 5.27% |  | 4.57% - 5.30% |  | 0.72% - 3.06%
Range of expected volatility | 21.31% - 29.82% |  | 26.02% - 34.93% |  | 25.73% - 37.20%
Weighted-average expected volatility | 26.88 | % |  | 30.48 | % |  | 30.34 | %
Weighted-average expected life (in years) | 1.17 |  | 1.06 |  | 1.06
Schedule of Restricted Stock Unit activity | RSU activity is summarized as follows:
| Number of Shares Outstanding (in thousands) |  | Weighted Average Grant Date Fair Value per Share |  | Weighted Average Remaining Contractual Life (in years) |  | Aggregate Intrinsic Value (1) (in millions)
RSUs outstanding, December 31, 2021 | 1,358 |  |  | $ | 594.27 |  |  |  |  |
RSUs granted | 912 |  |  | 661.43 |  |  |  |  |
RSUs released, vested | (669) |  |  | 576.62 |  |  |  |  |
RSUs canceled | (155) |  |  | 624.98 |  |  |  |  |
RSUs outstanding, December 31, 2022 | 1,446 |  |  | 641.51 |  |  |  |  |
RSUs granted | 991 |  |  | 699.07 |  |  |  |  |
RSUs released, vested | (681) |  |  | 644.90 |  |  |  |  |
RSUs canceled | (204) |  |  | 640.68 |  |  |  |  |
RSUs outstanding, December 31, 2023 | 1,552 |  |  | 676.89 |  |  |  |  |
RSUs granted | 842 |  |  | 884.10 |  |  |  |  |
RSUs released, vested | (688) |  |  | 714.66 |  |  |  |  |
RSUs canceled | (274) |  |  | 738.15 |  |  |  |  |
RSUs outstanding, December 31, 2024 | 1,432 |  |  | $ | 768.84 |  |  | 1.22 |  | $ | 1,350 |
(1)The intrinsic value is calculated based on the closing market value of the stock as of December 31, 2024.
Schedule of Allocated Share-based Compensation | The following table presents, by operating expense, our stock-based compensation expense recognized in our consolidated statement of operations for the years ended December 31 (in millions):
| 2024 |  | 2023 |  | 2022
Cost of revenues | $ | 58 |  |  | $ | 48 |  |  | $ | 45 |
Sales and marketing | 94 |  |  | 86 |  |  | 83 |
General and administrative | 310 |  |  | 273 |  |  | 276 |
Total | $ | 462 |  |  | $ | 407 |  |  | $ | 404 |
Schedule of Share-based Compensation by Plan | Our stock-based compensation expense recognized in the consolidated statement of operations was comprised of the following types of equity awards for the years ended December 31 (in millions):
| 2024 |  | 2023 |  | 2022
RSUs | $ | 438 |  |  | $ | 387 |  |  | $ | 360 |
RSAs | — |  |  | 2 |  |  | 10 |
Employee stock purchase plan | 24 |  |  | 18 |  |  | 34 |
Total | $ | 462 |  |  | $ | 407 |  |  | $ | 404 |

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