Migrate From the Detailed Billing Report to the Cost and Usage Report
Cost and Usage Reports contain much of the same data that detailed billing reports do, and they also include additional data about Reserved Instances on your account. If you've been using a detailed billing report, you've already activated billing reports on your account. If you haven't used billing reports before,
If you're already ingesting the detailed billing report into the accounting or management software that your organization prefers, you might need to update your ingestion process to account for changes in naming conventions between the two reports: