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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:    
Consolidated net income $ 4,220 $ 4,177
Adjustments to reconcile consolidated net income to net cash flows from operating activities:    
Depreciation and amortization 6,517 6,505
Stock compensation expense 530 513
Noncash interest, net 22 25
Deferred income taxes 772 48
Other, net 498 264
Changes in operating assets and liabilities, net of effects from acquisitions and dispositions:    
Accounts receivable (334) (99)
Prepaid expenses and other assets (355) (537)
Accounts payable, accrued liabilities and other 446 74
Net cash flows from operating activities 12,316 10,970
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (8,324) (8,207)
Change in accrued expenses related to capital expenditures 239 510
Other, net (497) (378)
Net cash flows from investing activities (8,582) (8,075)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Borrowings of long-term debt 12,019 17,388
Borrowings of equipment installment plan financing facility 292 1,000
Repayments of long-term debt (10,921) (19,899)
Payments for debt issuance costs (17) (27)
Purchase of treasury stock (4,366) (1,099)
Proceeds from exercise of stock options 20 29
Purchase of noncontrolling interest (373) (185)
Distributions to noncontrolling interest (124) (108)
Other, net (249) 47
Net cash flows from financing activities (3,719) (2,854)
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 15 41
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 506 709
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period 521 750
CASH PAID FOR INTEREST 3,610 3,812
CASH PAID FOR INCOME TAXES 767 1,120
Restricted cash $ 57 $ 29