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DEBT - Narrative (Details) £ in Millions	1 Months Ended		12 Months Ended
DEBT - Narrative (Details) £ in Millions	Oct. 31, 2024 USD ($) renewalPeriod	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 GBP (£)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 EUR (€)	Aug. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Apr. 08, 2022 USD ($)	Jun. 09, 2021 USD ($)
Debt Instrument [Line Items]
Aggregate purchase price			$ 2,610,000,000
Gain on extinguishment of debt			632,000,000		$ 17,000,000	$ 0
Outstanding borrowings			39,527,000,000		$ 43,955,000,000
WarnerMedia
Debt Instrument [Line Items]
Debt assumed			1,043,000,000							$ 41,680,000,000
Senior Notes
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)					6.412%
Debt instrument, repurchase amount		$ 3,399,000,000	965,000,000		$ 183,000,000			$ 1,900,000,000
Gain on extinguishment of debt		$ 542,000,000
Face amount					1,500,000,000
Term Loan
Debt Instrument [Line Items]
Principal repayments of term loans					4,000,000,000
Line of Credit
Debt Instrument [Line Items]
Outstanding borrowings			0		0
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Revolving line of credit, maximum borrowing capacity	$ 6,000,000,000										$ 6,000,000,000
Number of renewal periods \| renewalPeriod	2
Term of renewal period (in days)	364 days
Debt instrument, covenant, consolidated interest coverage ratio, minimum	3.00
Debt instrument, covenant, adjusted consolidated leverage ratio, maximum	4.50
Line of Credit \| Revolver Sublimit for Standby Letters of Credit
Debt Instrument [Line Items]
Revolving line of credit, maximum borrowing capacity	$ 150,000,000
Line of Credit \| Additional Commitments Upon Satisfaction of Certain Conditions
Debt Instrument [Line Items]
Revolving line of credit, maximum borrowing capacity	$ 1,000,000,000
Commercial Paper
Debt Instrument [Line Items]
Revolving line of credit, maximum borrowing capacity			1,000,000,000
Outstanding borrowings			$ 0		$ 0
Senior Notes Due 2024, 3.900% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			3.90%				3.90%
Senior Notes Due 2024, 3.900% \| Senior Notes \| Scripps Networks Interactive, Inc.
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			3.90%				3.90%
Senior Notes Due 2055, 4.000% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.00%				4.00%
Senior Notes Due 2050, 4.650% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.65%				4.65%
Senior Notes Due 2042, 4.950% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.95%				4.95%
Senior Notes Due 2043, 4.875% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.875%				4.875%
Senior Notes Due 2047, 5.200% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			5.20%				5.20%
Senior Notes Due 2049, 5.300% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			5.30%				5.30%
Senior Notes Due 2044, 4.650% \| Senior Notes \| Legacy WarnerMedia Business
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.65%				4.65%
Senior Notes Due 2045, 4.850% \| Senior Notes \| Legacy WarnerMedia Business
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.85%				4.85%
Senior Notes Due 2042, 4.900% \| Senior Notes \| Legacy WarnerMedia Business
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.90%				4.90%
Senior Notes Due 2043, 5.350% \| Senior Notes \| Legacy WarnerMedia Business
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			5.35%				5.35%
Senior Notes Due 2042, 5.050% \| Senior Notes \| WarnerMedia Holdings, Inc.
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			5.05%				5.05%
Senior Notes Due November 2024 \| Senior Notes
Debt Instrument [Line Items]
Principal repayments of term loans			$ 296,000,000
Senior Notes Due September 2024 \| Senior Notes
Debt Instrument [Line Items]
Principal repayments of term loans			529,000,000	£ 400
Senior Notes Due June 2024 \| Senior Notes
Debt Instrument [Line Items]
Principal repayments of term loans			48,000,000
Senior Notes Due February And March 2024 \| Senior Notes
Debt Instrument [Line Items]
Principal repayments of term loans			$ 726,000,000
Senior Notes Due 2030, 4.302% \| Senior Notes
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.302%				4.302%
Face amount \| €							€ 650,000,000
Senior Notes Due 2033, 4.693% \| Senior Notes
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			4.693%				4.693%
Face amount \| €							€ 850,000,000
Senior Notes Due 2023, 4.050% \| Senior Notes \| Warner Media, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)					4.05%
Senior Notes Due 2024, 3.550% \| Senior Notes \| Warner Media, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)					3.55%
Senior Notes Due 2024, 7.570% \| Senior Notes \| Historic TW Inc.
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)					7.57%
Senior Notes Due 2024, 3.800% \| Senior Notes \| Discovery Communications, LLC
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)					3.80%
Senior Notes Due 2024, 3.528% \| Senior Notes \| WarnerMedia Holdings, Inc.
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)					3.528%
Senior Notes Due 2024, 3.428% \| Senior Notes \| WarnerMedia Holdings, Inc.
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)					3.428%
Floating rate senior notes with maturities of 5 years or less \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchase amount									$ 460,000,000
Outstanding borrowings			$ 0		$ 40,000,000
Senior Notes Due December 2023 \| Senior Notes
Debt Instrument [Line Items]
Principal repayments of term loans					42,000,000
Senior Notes Due September 2023 \| Senior Notes
Debt Instrument [Line Items]
Principal repayments of term loans					178,000,000
Senior Notes Due February 2023 \| Senior Notes
Debt Instrument [Line Items]
Principal repayments of term loans					$ 106,000,000
Un-exchanged Scripps Senior Notes \| Senior Notes \| Scripps Networks
Debt Instrument [Line Items]
Principal amount of liabilities assumed			$ 11,000,000