Export charge history as document file

No, not from Toyota. You only have the Charge History and Charge Detail screens to go back and look at for that. And even at that the kWh Toyota reports is not accurate but just some estimate they make up. For real data you'd have to use some third party EVSE that gathers that data as it delivers power to the charger.

 

Data from the EVSE is only going to include the power delivered to the car, not accounting for car-side losses (battery heat/cooling, 12V charging, conversion losses, etc.). If anything, Toyota should be able to get much more accurate info from the BMS about how much charge actually made its way into the battery.