Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	$ 24,812
Communications
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	23,986
Communications | Business Wireline
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	13,478
Communications | Consumer Wireline
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	10,508
Latin America Business Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	826
Projected Weighted Average Cost Of Capital Increased By 25 Basis Points [Member] | Communications
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	3,400
Projected Terminal Growth Rate Declined By 25 Basis Points [Member] | Communications
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	2,100
Long-Term EBITDA Margin Declined 100 Basis Points [Member] | Communications
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	$ 2,800
Orbital Slots | Video Business Unit
Finite-Lived Intangible Assets [Line Items]
Intangible assets disposed		$ 5,798
Customer lists and relationships | Video Business Unit
Finite-Lived Intangible Assets [Line Items]
Intangible assets disposed		$ 1,585