Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Income from Continuing Operations	$ 4,453	$ 5,149
Adjustments to reconcile income from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization	4,631	4,462
Provision for uncollectible accounts	477	430
Deferred income tax expense	529	1,150
Net (gain) loss on investments, net of impairments	(93)	87
Pension and postretirement benefit expense (credit)	(670)	(940)
Actuarial (gain) loss on pension and postretirement benefits	0	(1,053)
Changes in operating assets and liabilities:
Receivables	620	864
Other current assets	364	244
Accounts payable and other accrued liabilities	(3,409)	(2,651)
Equipment installment receivables and related sales	(243)	541
Deferred customer contract acquisition and fulfillment costs	(22)	(259)
Postretirement claims and contributions	(89)	(97)
Other - net	130	(297)
Total adjustments	2,225	2,481
Net Cash Provided by Operating Activities from Continuing Operations	6,678	7,630
Investing Activities
Capital expenditures	(4,335)	(4,568)
Acquisitions, net of cash acquired	(291)	(9,244)
Dispositions	15	7
Distributions from DIRECTV in excess of cumulative equity in earnings	774	1,315
Other - net	19	32
Net Cash Used in Investing Activities from Continuing Operations	(3,818)	(12,458)
Financing Activities
Net change in short-term borrowings with original maturities of three months or less	(536)	2,285
Issuance of other short-term borrowings	3,627	2,593
Repayment of other short-term borrowings	0	(3,407)
Issuance of long-term debt	3,366	479
Repayment of long-term debt	(5,945)	(790)
Repayment of note payable to DIRECTV	(130)	(294)
Payment of vendor financing	(2,113)	(1,566)
Purchase of treasury stock	(188)	(197)
Issuance of treasury stock	3	26
Dividends paid	(2,014)	(3,749)
Other - net	219	(930)
Net Cash Used in Financing Activities from Continuing Operations	(3,711)	(5,550)
Net decrease in cash and cash equivalents and restricted cash from continuing operations	(851)	(10,378)
Net Cash Provided by (Used in) Discontinued Operations [Abstract]
Cash (used in) provided by operating activities	0	(1,898)
Cash provided by (used in) investing activities	0	(193)
Cash provided by (used in) financing activities	0	29,801
Net increase (decrease) in cash and cash equivalents and restricted cash from discontinued operations	0	27,710
Net (decrease) increase in cash and cash equivalents and restricted cash	(851)	17,332
Cash and cash equivalents and restricted cash beginning of year	3,793	21,316
Cash and Cash Equivalents and Restricted Cash End of Period	$ 2,942	$ 38,648