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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:      
Consolidated net income $ 5,853 $ 5,261 $ 5,849
Adjustments to reconcile consolidated net income to net cash flows from operating activities:      
Depreciation and amortization 8,673 8,696 8,903
Stock compensation expense 651 692 470
Noncash interest, net 34 20 (17)
Deferred income taxes (87) (80) 87
Other, net 354 291 29
Changes in operating assets and liabilities, net of effects from acquisitions and dispositions:      
Accounts receivable (129) (44) (342)
Prepaid expenses and other assets (609) (572) (202)
Accounts payable, accrued liabilities and other (310) 169 148
Net cash flows from operating activities 14,430 14,433 14,925
CASH FLOWS FROM INVESTING ACTIVITIES:      
Purchases of property, plant and equipment (11,269) (11,115) (9,376)
Change in accrued expenses related to capital expenditures 1,096 172 553
Other, net (481) (184) (291)
Net cash flows from investing activities (10,654) (11,127) (9,114)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Borrowings of long-term debt 25,893 22,062 25,643
Borrowings of equipment installment plan financing facility 1,074 0 0
Repayments of long-term debt (29,660) (21,938) (19,311)
Payments for debt issuance costs (56) (32) (71)
Purchase of treasury stock (1,213) (3,215) (10,277)
Proceeds from exercise of stock options 32 22 5
Purchase of noncontrolling interest (189) (427) (1,602)
Distributions to noncontrolling interest (157) (158) (111)
Other, net 297 444 (43)
Net cash flows from financing activities (3,979) (3,242) (5,767)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (203) 64 44
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 709 645 601
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, end of period 506 709 645
CASH PAID FOR INTEREST 5,334 5,020 4,509
CASH PAID FOR TAXES 1,581 $ 1,470 $ 1,321
Restricted cash $ 47