# Data dictionary
<a name="data-dictionary"></a>

Cost and Usage Reports contain details about your usage. The following sections list and describe a subset of columns that you see in your report, and the corresponding definitions.

To download the full list of the columns that can appear in AWS Cost and Usage Reports (AWS CUR) and the services that the columns apply to, download [Column\_Attribute\_Service.zip](samples/Column_Attribute_Service.zip). This comma-separated values (CSV) list includes **Identity**, **Bill**, **LineItem**, **Reservation**, **Pricing**, and **Product** columns.

Every Cost and Usage Report includes **Identity**, **Bill**, and **LineItem** columns. All other columns are included in your report only if your monthly AWS usage generates data to populate those columns.

**Topics**
+ [Identity details](identity-columns.md)
+ [Billing details](billing-columns.md)
+ [Line item details](Lineitem-columns.md)
+ [Reservation details](reservation-columns.md)
+ [Pricing details](pricing-columns.md)
+ [Product details](product-columns.md)
+ [Resource tags details](resource-tags-columns.md)
+ [Savings Plans details](savingsplans-columns.md)
+ [Cost Categories details](cost-categories-columns.md)
+ [Discount details](discount-details.md)
+ [Split line item details](split-line-item-columns.md)

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Billing and Cost Management. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query cur` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).