Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Activities
Income from Continuing Operations	$ 13,041	$ 16,246
Adjustments to reconcile income from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization	14,011	13,426
Provision for uncollectible accounts	1,409	1,323
Deferred income tax expense	3,163	2,947
Net (gain) loss on investments, net of impairments	335	412
Pension and postretirement benefit expense (credit)	(1,966)	(2,529)
Actuarial and settlement (gain) loss on pension and postretirement benefits - net	(145)	(3,838)
Asset impairments and abandonments and restructuring	604	745
Changes in operating assets and liabilities:
Receivables	1,173	1,021
Other current assets	57	(799)
Accounts payable and other accrued liabilities	(5,062)	(3,261)
Equipment installment receivables and related sales	(56)	906
Deferred customer contract acquisition and fulfillment costs	47	(756)
Postretirement claims and contributions	(715)	(443)
Other - net	1,040	64
Total adjustments	13,895	9,218
Net Cash Provided by Operating Activities from Continuing Operations	26,936	25,464
Investing Activities
Capital expenditures	(13,252)	(15,397)
Acquisitions, net of cash acquired	(923)	(9,959)
Dispositions	66	49
Distributions from DIRECTV in excess of cumulative equity in earnings	1,447	2,205
(Purchases), sales and settlements of securities and investments, net	(1,043)	93
Other - net	(81)	(2)
Net Cash Used in Investing Activities from Continuing Operations	(13,786)	(23,011)
Financing Activities
Net change in short-term borrowings with original maturities of three months or less	(914)	84
Issuance of other short-term borrowings	5,406	3,955
Repayment of other short-term borrowings	(979)	(16,861)
Issuance of long-term debt	9,633	479
Repayment of long-term debt	(11,889)	(24,412)
Repayment of note payable to DIRECTV	(130)	(1,070)
Payment of vendor financing	(4,736)	(4,237)
Purchase of treasury stock	(190)	(875)
Issuance of treasury stock	3	28
Issuance of preferred interests in subsidiary	7,151	0
Redemption of preferred interests in subsidiary	(5,333)	0
Dividends paid	(6,116)	(7,845)
Other - net	(1,190)	(3,649)
Net Cash Used in Financing Activities from Continuing Operations	(9,284)	(54,403)
Net increase (decrease) in cash and cash equivalents and restricted cash from continuing operations	3,866	(51,950)
Net Cash Provided by (Used in) Discontinued Operations [Abstract]
Cash (used in) provided by operating activities	0	(3,754)
Cash provided by (used in) investing activities	0	1,029
Cash provided by (used in) financing activities	0	35,853
Net increase (decrease) in cash and cash equivalents and restricted cash from discontinued operations	0	33,128
Net increase (decrease) in cash and cash equivalents and restricted cash	3,866	(18,822)
Cash and cash equivalents and restricted cash beginning of year	3,793	21,316
Cash and Cash Equivalents and Restricted Cash End of Period	$ 7,659	$ 2,494