Acquisitions, Dispositions And Other Adjustments (Dispositions Narrative) (Details) - USD ($) $ in Millions							3 Months Ended				12 Months Ended
	Apr. 08, 2022	Sep. 20, 2021	Jul. 31, 2021	Nov. 06, 2020	Oct. 31, 2020	Oct. 13, 2020	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 15, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to redeem cumulative preferred interest in subsidiary that held notes secured by proceeds of sale											$ 2,665	$ 0	$ 1,950
Retained (Deficit) Earnings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distribution of WarnerMedia								$ 45,041			(45,041)	0	0
Additional Paid-In Capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distribution of WarnerMedia											(6,832)	0	$ 0
Changes related to acquisitions of interest held by noncontrolling owners								$ 5,632
DIRECTV
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Preferred interest in newly formed company									$ 1,800		1,800
Interest in newly formed company, additional distribution preference			$ 4,200								$ 4,200
Economic interest in common units held after disposal of business unit			70.00%								70.00%
Agreement to pay net losses under NFL Sunday Ticket Contract, cap amount			$ 2,100								$ 2,100
DIRECTV | TPG Capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Economic interest in common units			30.00%								30.00%
Cash contribution to newly formed company			$ 1,800
DIRECTV | Junior Preferred Interests
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Preferred interest in newly formed company			4,250								$ 4,250
Interest in newly formed company, additional distribution preference											$ 702
DIRECTV | Senior Preferred Interests | TPG Capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Preferred interest in newly formed company			$ 1,800									$ 1,800
Otter Media
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds received at closing									1,540
Goodwill									1,200
Playdemic
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds received at closing		$ 1,370
Gain (Loss) on Disposition of Business		706
Goodwill		$ 600
CME
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds received at closing						$ 1,100
Percent of interest disposed						65.30%
WarnerMedia | Additional Paid-In Capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distribution of WarnerMedia							$ 1,200
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] | Vrio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Note Receivable from sale of Held-for-Sale assets														$ 610
Notes Receivable Payment Period												4 years
Financial Receivable														$ 300
Asset Impairment Charges										$ 80
Historical currency translation adjustments										2,100
Property, plant and equipment and intangible assets										2,500
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] | Vrio | Noncontrolling Interest
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Impairment Charges										$ 4,555
Discontinued Operations, Disposed of by Sale | Video Business Unit
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received at closing									7,170
Cash proceeds received at closing									7,600
Previously received consideration									430
Amount of transferred debt									$ 195
Discontinued Operations, Disposed of by Sale | Puerto Rico And U.S. Virgin Islands Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received at closing					$ 1,950
Gain (Loss) on Disposition of Business					(82)
Payments to redeem cumulative preferred interest in subsidiary that held notes secured by proceeds of sale				$ 1,950	$ 1,950
Spinoff | WarnerMedia
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount of transferred debt	$ 1,600
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Assets, discontinued operations												$ 119,776
Liabilities												33,555
Discontinued Operations | Vrio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Impairment Charges												4,555
Discontinued Operations | WarnerMedia
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received at closing	40,400
Cash proceeds received at closing	38,800
Amount of transferred debt	$ 1,600
Type of Consideration Received								Each AT&T shareholder was entitled to receive 0.241917 shares of WBD common stock for each share of AT&T common stock held as of the record date
Total Assets, discontinued operations								$ 121,100
Liabilities								$ 70,600
Discontinued Operations | WarnerMedia | Warner Bros. Discovery
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage by parent	71.00%
Prepaid Expenses and Other Current Assets | Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] | Vrio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Assets, discontinued operations												851
Accounts payable and accrued liabilities | Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] | Vrio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities												$ 2,872