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Condensed Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Cash flows from operating activities:    
Net income $ 292,304 $ 285,038
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 84,534 75,951
Loss (Gain) on disposal of property and equipment 726 (4,345)
Other, net 7,732 8,390
Changes in operating assets and liabilities, net 38,597 50,333
Net cash provided by operating activities 423,893 415,367
Cash flows from investing activities:    
Purchase of property and equipment (119,511) (234,736)
Proceeds from sale of property and equipment 1,559 10,283
Proceeds from maturities of short-term investments   24,578
Net cash used in investing activities (117,952) (199,875)
Cash flows from financing activities:    
Payments for share repurchases (85,280) (141,666)
Dividends paid (56,633) (44,052)
Other financing activities, net (16,853) (8,462)
Net cash used in financing activities (158,766) (194,180)
Increase in cash and cash equivalents 147,175 21,312
Cash and cash equivalents at beginning of period 433,799 186,312
Cash and cash equivalents at end of period $ 580,974 $ 207,624

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