How to find details of 'Average Cost Updates' done to items?

Hi,

Please let me know whether there is any inquiry or reports available to view the Average Cost Updates done to items.

Average Cost Updates are done from:

Inventory --> Costs --> Average Cost Update

There's Item Cost History available in Cost Management module but it doesn't include all the details related to the Average Cost updates. (Such as Reason, Reference etc.) 

Cheers,

Samindi