SEGMENT AND GEOGRAPHIC INFORMATION - Sales by type of products (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Disclosure of products and services [line items] | ||
| Sales | $ 30,724 | $ 32,531 |
| Flat products | ||
| Disclosure of products and services [line items] | ||
| Sales | 17,166 | 18,678 |
| Long products | ||
| Disclosure of products and services [line items] | ||
| Sales | 6,412 | 6,878 |
| Tubular products | ||
| Disclosure of products and services [line items] | ||
| Sales | 968 | 976 |
| Mining products | ||
| Disclosure of products and services [line items] | ||
| Sales | 664 | 660 |
| Others | ||
| Disclosure of products and services [line items] | ||
| Sales | $ 5,514 | $ 5,339 |