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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash Flows from Operating Activities    
Net Income $ 9,424 $ 9,784
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization expense 8,928 8,677
Employee retirement benefits 354 108
Deferred income taxes 282 633
Provision for expected credit losses 1,119 1,061
Equity in losses of unconsolidated businesses, inclusive of dividends received 33 49
Changes in current assets and liabilities, net of effects from acquisition/disposition of businesses (3,572) (620)
Other, net 1 (1,672)
Net cash provided by operating activities 16,569 18,020
Cash Flows from Investing Activities    
Capital expenditures (including capitalized software) (8,071) (10,070)
Acquisitions of wireless licenses (613) (1,085)
Collateral receipts (payments) related to derivative contracts, net (424) 824
Other, net (2) 131
Net cash used in investing activities (9,110) (10,200)
Cash Flows from Financing Activities    
Proceeds from long-term borrowings 3,122 1,503
Proceeds from asset-backed long-term borrowings 5,828 3,705
Net proceeds from (repayments of) short-term commercial paper 603 (167)
Repayments of long-term borrowings and finance lease obligations (5,719) (2,600)
Repayments of asset-backed long-term borrowings (4,008) (2,383)
Dividends paid (5,598) (5,487)
Other, net (1,290) (157)
Net cash used in financing activities (7,062) (5,586)
Increase in cash, cash equivalents and restricted cash 397 2,234
Cash, cash equivalents and restricted cash, beginning of period 3,497 4,111
Cash, cash equivalents and restricted cash, end of period $ 3,894 $ 6,345