Once logged in, click on your name on the top-right corner of the page, and click Subscription.
Click on the Invoices menu on the left panel.
This shows all the past as well as upcoming invoices.
Selecting an invoice will display the invoice details.
An invoice also provides detailed information about the usage. You can expand each row entry under Usage to see more details about the Package.
You can Print as well as Export Usage into a CSV file using the buttons provided.