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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:    
Consolidated net income $ 1,409 $ 1,280
Adjustments to reconcile consolidated net income to net cash flows from operating activities:    
Depreciation and amortization 2,181 2,190
Stock compensation expense 222 214
Noncash interest, net 8 8
Deferred income taxes (27) 21
Other, net 233 15
Changes in operating assets and liabilities, net of effects from acquisitions and dispositions:    
Accounts receivable (48) (39)
Prepaid expenses and other assets (235) (366)
Accounts payable, accrued liabilities and other 493 (111)
Net cash flows from operating activities 4,236 3,212
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (2,399) (2,791)
Change in accrued expenses related to capital expenditures (273) (63)
Other, net (132) (53)
Net cash flows from investing activities (2,804) (2,907)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Borrowings of long-term debt 1,393 5,921
Borrowings of equipment installment plan financing facility 121 0
Repayments of long-term debt (1,609) (5,716)
Payments for debt issuance costs 0 (2)
Purchase of treasury stock (802) (516)
Proceeds from exercise of stock options 17 2
Purchase of noncontrolling interest (20) (95)
Distributions to noncontrolling interest (3) (3)
Other, net (169) 56
Net cash flows from financing activities (1,072) (353)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 360 (48)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period 506 709
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period 866 661
CASH PAID FOR INTEREST 995 1,236
CASH PAID FOR INCOME TAXES 56 $ 78
Restricted cash $ 70