Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities
Income from Continuing Operations	$ 16,246	$ 18,574
Adjustments to reconcile income from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization	13,426	13,352
Provision for uncollectible accounts	1,323	857
Deferred income tax expense	2,947	5,234
Net (gain) loss on investments, net of impairments	412	(298)
Pension and postretirement benefit expense (credit)	(2,529)	(2,876)
Actuarial (gain) loss on pension and postretirement benefits	(3,838)	(3,021)
Asset impairments and abandonments and restructuring	745	105
Changes in operating assets and liabilities:
Receivables	1,021	(101)
Other current assets	(799)	(484)
Accounts payable and other accrued liabilities	(3,261)	(2,660)
Equipment installment receivables and related sales	906	715
Deferred customer contract acquisition and fulfillment costs	(756)	287
Postretirement claims and contributions	(443)	(425)
Other - net	64	(166)
Total adjustments	9,218	10,519
Net Cash Provided by Operating Activities from Continuing Operations	25,464	29,093
Investing Activities
Capital expenditures	(15,397)	(12,051)
Acquisitions, net of cash acquired	(9,959)	(23,533)
Dispositions	49	7,061
Distributions from DIRECTV in excess of cumulative equity in earnings	2,205	0
Other - net	91	(5)
Net Cash Used in Investing Activities from Continuing Operations	(23,011)	(28,528)
Financing Activities
Net change in short-term borrowings with original maturities of three months or less	84	630
Issuance of other short-term borrowings	3,955	17,476
Repayment of other short-term borrowings	(16,861)	(2,448)
Issuance of long-term debt	479	9,931
Repayment of long-term debt	(24,412)	(1,574)
Note payable to DIRECTV, net of payments	(1,070)	1,439
Payment of vendor financing	(4,237)	(4,013)
Purchase of treasury stock	(875)	(191)
Issuance of treasury stock	28	89
Dividends paid	(7,845)	(11,319)
Other - net	(3,649)	(1,567)
Net Cash (Used in) Provided by Financing Activities from Continuing Operations	(54,403)	8,453
Net (decrease) increase in cash and cash equivalents and restricted cash from continuing operations	(51,950)	9,018
Net Cash Provided by (Used in) Discontinued Operations [Abstract]
Cash (used in) provided by operating activities	(3,754)	1,610
Cash provided by (used in) investing activities	1,029	1,195
Cash provided by (used in) financing activities	35,853	(288)
Net increase (decrease) in cash and cash equivalents and restricted cash from discontinued operations	33,128	2,517
Net (decrease) increase in cash and cash equivalents and restricted cash	(18,822)	11,535
Cash and cash equivalents and restricted cash beginning of year	21,316	9,870
Cash and Cash Equivalents and Restricted Cash End of Period	$ 2,494	$ 21,405