| Component: (Network and Table) | |
|---|---|
| Network | 2413402 - Disclosure - Inventories (Details) (http://www.mt.com/role/InventoriesDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001037646 (http://www.sec.gov/CIK) |
| INVENTORIES [Abstract] | Period [Axis] | |
|---|---|---|
2016-12-31 | 2015-12-31 | |
INVENTORIES [Abstract] | ||
Raw Materials and Supplies | ||
Work in Process | ||
Finished Goods | ||
Inventory, Net | 222,047,000 | 214,383,000 |