Segment Information (Intersegment Assets, Equity Affiliates Investments and Capital Expenditures Details) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 402,853	$ 551,622
Investments in Equity Method Investees	3,533	6,168	$ 742
Capital Expenditures	19,626	15,545	$ 14,690
Corporate and eliminations
Segment Reporting Information [Line Items]
Assets	(76,999)	93,991
Investments in Equity Method Investees	3,533	6,168
Capital Expenditures	304	535
Total Assets, discontinued operations		119,776
Communications | Operating Segments
Segment Reporting Information [Line Items]
Assets	471,444	448,757
Investments in Equity Method Investees	0	0
Capital Expenditures	18,962	14,691
Latin America Business Segment | Operating Segments
Segment Reporting Information [Line Items]
Assets	8,408	8,874
Investments in Equity Method Investees	0	0
Capital Expenditures	$ 360	$ 319