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EQUITY AND EARNINGS PER SHARE - Common Stock Issued in Connection with the WarnerMedia Merger (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Apr. 08, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Selling, general and administrative		$ 9,296	$ 9,696	$ 9,678
WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Equity interest issued or issuable (in shares)	1,732,000,000
Series A Common Stock | WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Equity interest issued or issuable (in shares)	1,700,000,000
Series A Common Stock | AT&T | WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Entity shares issued per acquiree share	1
Series B Common Stock | AT&T | WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Entity shares issued per acquiree share	1
Series C Common Stock | AT&T | WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Entity shares issued per acquiree share	1
Series A-1 Convertible Preferred Stock | WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Selling, general and administrative	$ 789			$ 789
Series A-1 Convertible Preferred Stock | AT&T | WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Entity shares issued per acquiree share	13.1135
Series C-1 Convertible Preferred Stock | AT&T | WarnerMedia
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Entity shares issued per acquiree share	19.3648

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Number of shares of equity interests issued or issuable to acquire entity.

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