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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:    
Consolidated net income $ 2,904 $ 2,703
Adjustments to reconcile consolidated net income to net cash flows from operating activities:    
Depreciation and amortization 4,357 4,360
Stock compensation expense 379 367
Noncash interest, net 15 16
Deferred income taxes (80) (13)
Other, net 350 105
Changes in operating assets and liabilities, net of effects from acquisitions and dispositions:    
Accounts receivable (286) (33)
Prepaid expenses and other assets (169) (265)
Accounts payable, accrued liabilities and other 366 (175)
Net cash flows from operating activities 7,836 7,065
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (5,273) (5,644)
Change in accrued expenses related to capital expenditures 47 233
Other, net (199) (225)
Net cash flows from investing activities (5,425) (5,636)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Borrowings of long-term debt 5,116 14,743
Borrowings of equipment installment plan financing facility 233 876
Repayments of long-term debt (4,793) (15,784)
Payments for debt issuance costs (1) (27)
Purchase of treasury stock (2,253) (877)
Proceeds from exercise of stock options 19 2
Purchase of noncontrolling interest (252) (141)
Distributions to noncontrolling interest (124) (64)
Other, net (213) (224)
Net cash flows from financing activities (2,268) (1,496)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 143 (67)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 506 709
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period 649 642
CASH PAID FOR INTEREST 2,439 2,598
CASH PAID FOR INCOME TAXES 713 647
Restricted cash $ 43 $ 40