NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Supplemental Information - Statements of Cash Flows (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Lessee, Lease, Description [Line Items] | ||
| Leased assets obtained in exchange for new operating lease liabilities | $ 8 | $ 3 |
| Property and equipment purchases | 3 | 5 |
| Shares received in exchange for advertising spots | 5 | 8 |
| Sinclair Broadcast Group, LLC | ||
| Lessee, Lease, Description [Line Items] | ||
| Leased assets obtained in exchange for new operating lease liabilities | 8 | 3 |
| Property and equipment purchases | 3 | 5 |
| Shares received in exchange for advertising spots | 4 | 8 |
| Distributions to member, net | 29 | 31 |
| Sinclair Broadcast Group, LLC | Dividends To Shareholders And Parent Company Expenses | ||
| Lessee, Lease, Description [Line Items] | ||
| Distributions to member, net | $ 29 | $ 30 |