Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities
Net income (loss)	$ 12,253	$ 15,623	$ (6,874)
Adjustments to reconcile income (loss) from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization	20,580	18,777	18,021
Provision for uncollectible accounts	1,969	1,969	1,865
Deferred income tax expense	1,570	3,037	2,975
Net (gain) loss on investments, net of impairments	80	441	381
Pension and postretirement benefit expense (credit)	(1,883)	(2,552)	(3,237)
Actuarial and settlement (gain) loss on pension and postretirement benefits – net	56	1,594	(1,999)
Asset impairments and abandonments and restructuring	5,075	1,193	27,498
Changes in operating assets and liabilities:
Receivables	123	82	727
Inventories, prepaid and other current assets	(383)	(642)	(674)
Accounts payable and other accrued liabilities	(810)	(1,764)	(1,109)
Equipment installment receivables and related sales	(1,846)	(133)	154
Deferred customer contract acquisition and fulfillment costs	497	1	(947)
Postretirement claims and contributions	(166)	(735)	(823)
Other – net	1,656	1,423	(146)
Total adjustments	26,518	22,691	42,686
Net Cash Provided by Operating Activities from Continuing Operations	38,771	38,314	35,812
Investing Activities
Capital expenditures	(20,263)	(17,853)	(19,626)
Acquisitions, net of cash acquired	(380)	(2,942)	(10,200)
Dispositions	75	72	199
Distributions from DIRECTV in excess of cumulative equity in earnings	928	2,049	2,649
(Purchases), sales and settlement of securities and investments, net	2,575	(902)	82
Other – net	(425)	(84)	(3)
Net Cash Used in Investing Activities from Continuing Operations	(17,490)	(19,660)	(26,899)
Financing Activities
Net change in short-term borrowings with original maturities of three months or less	0	(914)	(519)
Issuance of other short-term borrowings	491	5,406	3,955
Repayment of other short-term borrowings	(2,487)	(3,415)	(18,345)
Proceeds from Issuance of Long-Term Debt	19	10,004	2,979
Repayment of long-term debt	(10,297)	(12,044)	(25,118)
Note payable to DIRECTV, net of payments	0	(130)	(1,211)
Payment of vendor financing	(1,792)	(5,742)	(4,697)
Purchase of treasury stock	(215)	(194)	(890)
Issuance of treasury stock	15	3	28
Issuance of preferred interests in subsidiary	0	7,151	0
Redemption of preferred interests in subsidiary	0	(5,333)	(2,665)
Dividends paid	(8,208)	(8,136)	(9,859)
Other – net	(2,234)	(2,270)	(3,222)
Net Cash Used in Financing Activities from Continuing Operations	(24,708)	(15,614)	(59,564)
Net increase (decrease) in cash and cash equivalents and restricted cash from continuing operations	(3,427)	3,040	(50,651)
Net Cash Provided by (Used in) Discontinued Operations [Abstract]
Cash used in operating activities	0	0	(3,789)
Cash provided by investing activities	0	0	1,094
Cash provided by financing activities	0	0	35,823
Net increase in cash and cash equivalents and restricted cash from discontinued operations	0	0	33,128
Net increase (decrease) in cash and cash equivalents and restricted cash	(3,427)	3,040	(17,523)
Cash and cash equivalents and restricted cash beginning of year	6,833	3,793	21,316
Cash and Cash Equivalents and Restricted Cash End of Year	$ 3,406	$ 6,833	$ 3,793