Financial Instruments - Class of Assets and Liabilities Subject to Recurring Fair Value Measurements Categorized Within Level 3 (Details)	Dec. 31, 2025	Dec. 31, 2024
Financial Instruments
Percentage of reasonably possible increase in risk assumption	10.00%	10.00%

The reasonably possible percentage of the increase in the designated risk component used to determine the value of the financial instrument. Excludes defined benefit plan obligations.

No definition available.

Name:	tv_PercentageOfReasonablyPossibleIncreaseInRiskAssumption
Namespace Prefix:	tv_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant