v3.25.3
Stockholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2025
Equity [Abstract]  
Schedule of Stock Options and SAR Activity
A summary of stock option and SAR activity for the nine months ended September 30, 2025 is as follows (in millions, except share amounts which are reflected in thousands, per share amounts, and years):
SARs Outstanding Number of SARsOptions Outstanding Number of SharesWeighted-Average Exercise Price Per ShareWeighted-Average Remaining Contractual Life (in years)Aggregate Intrinsic Value
As of December 31, 202433 7,198 $40.16 4.90$153 
Granted— 484 $74.44 
Exercised(12)(1,399)$16.34 
Canceled and forfeited(3)(146)$40.81 
As of September 30, 202518 6,137 $48.36 4.92$305 
Exercisable as of September 30, 202518 2,318 $27.97 3.18$164 
Schedule of Restricted Stock Units Activity
The following table summarizes the activity related to our RSUs for the nine months ended September 30, 2025 (in thousands, except per share amounts):
Number of SharesWeighted-Average
 Grant-Date Fair
 Value per Share
Unvested and outstanding as of December 31, 202466,202 $48.49 
Granted33,047 $76.28 
Vested(27,219)$46.33 
Canceled and forfeited(6,924)$54.66 
Unvested and outstanding as of September 30, 202565,106 $62.84 
Schedule of Stock-Based Compensation Expense by Function The following table summarizes total stock-based compensation expense by function (in millions):
Three Months Ended September 30,Nine Months Ended September 30,
2024202520242025
Operations and support$50 $58 $171 $169 
Sales and marketing23 26 68 78 
Research and development268 278 844 826 
General and administrative97 103 294 302 
Total$438 $465 $1,377 $1,375