Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash Flows from Operating Activities
Net Income	$ 4,983	$ 4,722
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	4,577	4,445
Employee retirement benefits	143	62
Deferred income taxes	132	141
Provision for expected credit losses	587	567
Equity in losses of unconsolidated businesses, inclusive of dividends received	20	14
Changes in current assets and liabilities, net of effects from acquisition/disposition of businesses	(2,618)	(2,531)
Other, net	(42)	(336)
Net cash provided by operating activities	7,782	7,084
Cash Flows from Investing Activities
Capital expenditures (including capitalized software)	(4,145)	(4,376)
Acquisitions of wireless licenses	(122)	(449)
Other, net	515	(420)
Net cash used in investing activities	(3,752)	(5,245)
Cash Flows from Financing Activities
Proceeds from long-term borrowings	0	3,110
Proceeds from asset-backed long-term borrowings	2,781	2,510
Repayments of long-term borrowings and finance lease obligations	(2,446)	(4,508)
Repayments of asset-backed long-term borrowings	(2,589)	(1,408)
Dividends paid	(2,856)	(2,796)
Other, net	(783)	1,664
Net cash used in financing activities	(5,893)	(1,428)
Increase (decrease) in cash, cash equivalents and restricted cash	(1,863)	411
Cash, cash equivalents and restricted cash, beginning of period	4,635	3,497
Cash, cash equivalents and restricted cash, end of period	$ 2,772	$ 3,908