Additional Financial Information (Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Additional Financial Information [Line Items]
Advertising expense	$ 2,462	$ 2,732	$ 2,705
Interest expense incurred	7,402	7,670	7,850
Total interest expense	6,108	6,716	7,727
Capital Expenditures
Additional Financial Information [Line Items]
Capitalized interest	(174)	(173)	(123)
Spectrum Licenses
Additional Financial Information [Line Items]
Capitalized interest	$ (1,120)	$ (781)	$ 0