Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows from Operating Activities
Net Income	$ 5,018	$ 4,711
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	4,318	4,236
Employee retirement benefits	54	(210)
Deferred income taxes	331	627
Provision for expected credit losses	530	328
Equity in losses of unconsolidated businesses, net of dividends received	10	7
Changes in current assets and liabilities, net of effects from acquisition/disposition of businesses	(774)	(3,492)
Other, net	(1,198)	614
Net cash provided by operating activities	8,289	6,821
Cash Flows from Investing Activities
Capital expenditures (including capitalized software)	(5,958)	(5,821)
Acquisitions of wireless licenses	(598)	(1,838)
Collateral repayments (payments) related to derivative contracts, net	367	(277)
Other, net	79	(59)
Net cash used in investing activities	(6,110)	(7,995)
Cash Flows from Financing Activities
Proceeds from long-term borrowings	504	3,604
Proceeds from asset-backed long-term borrowings	1,754	3,545
Net proceeds from short-term commercial paper	342	3,791
Repayments of long-term borrowings and finance lease obligations	(1,325)	(6,556)
Repayments of asset-backed long-term borrowings	(931)	(1,650)
Dividends paid	(2,744)	(2,654)
Other, net	17	165
Net cash provided by (used in) financing activities	(2,383)	245
Decrease in cash, cash equivalents and restricted cash	(204)	(929)
Cash, cash equivalents and restricted cash, beginning of period	4,111	4,161
Cash, cash equivalents and restricted cash, end of period	$ 3,907	$ 3,232