Table:
|  |  |  | Year Ended May 31, |  |
| --- | --- | --- | --- | --- |
|  |  |  | Percent Change |  |
| (Dollars in millions) | 2019 | Actual | Constant | 2018 |
| Transitional and other employee related costs | $49 | 3% | 4% | $48 |
| Stock-based compensation | — | -100% | -100% | 1 |
| Professional fees and other, net | 16 | 373% | 426% | 3 |
| Business combination adjustments, net | (21) | * | * | — |
| Total acquisition related and other expenses | $44 | -15% | -13% | $52 |
Paragraphs:
Acquisition Related and Other Expenses: Acquisition related and other expenses consist of personnel related costs and stock-based compensation for transitional and certain other employees, integration related professional services, and certain business combination adjustments including certain adjustments after the measurement period has ended and certain other operating items, net. Stock-based compensation expenses included in acquisition related and other expenses resulted from unvested restricted stock-based awards and stock options assumed from acquisitions whereby vesting was accelerated generally upon termination of the employees pursuant to the original terms of those restricted stock-based awards and stock options.
* Not meaningful
On a constant currency basis, acquisition related and other expenses decreased in fiscal 2019 compared to fiscal 2018 primarily due to certain favorable business combination related adjustments that were recorded in fiscal 201 9 .
Question:
Why did acquisition related and other expenses decrease in fiscal 2019 compared to fiscal 2018?
Answer: acquisition related and other expenses decreased in fiscal 2019 compared to fiscal 2018 primarily due to certain favorable business combination related adjustments that were recorded in fiscal 201 9 .