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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net income $ 258,835 $ 76,905
Depreciation and amortization 350,553 312,663
Other operating activities and non-cash items (37,303) 1,312
Changes in assets and liabilities (190,512) (108,268)
Net cash provided by operating activities 381,573 282,612
Cash flows from investing activities:    
Payments for property, plant and equipment (688,425) (226,086)
Proceeds from sale of property, plant and equipment 35,913 4,762
Proceeds from foreign exchange forward contracts 21,744 41,920
Payments for foreign exchange forward contracts (30,958) (28,967)
Payments for short-term investments (774,110) (331,393)
Proceeds from sale of short-term investments 183,384 76,021
Proceeds from maturities of short-term investments 243,651 256,266
Other investing activities 1,091 1,680
Net cash used in investing activities (1,007,710) (205,797)
Cash flows from financing activities:    
Proceeds from long-term debt 1,150,000 500,000
Payments of long-term debt (80,265) (112,163)
Payments for debt issuance costs (20,509) (6,963)
Payments for capped call transactions (56,350) 0
Payments of finance lease obligations (25,354) (30,627)
Payments of dividends (41,403) (40,860)
Other financing activities (3,926) (1,167)
Net cash provided by financing activities 922,193 308,220
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash (1,834) 8,792
Net increase in cash, cash equivalents and restricted cash 294,222 393,827
Cash, cash equivalents and restricted cash, beginning of period 1,446,123 1,134,312
Cash, cash equivalents and restricted cash, end of period 1,740,345 1,528,139
Non-cash investing and financing activities:    
Property, plant and equipment included in capital expenditures payable 573,539 383,603
Right of use assets acquired through finance lease liabilities 5,957 14,009
Property, plant and equipment acquired through exchange and derecognition of right of use assets 7,903 21,578
Grants and incentive receivables recognized for qualified capital expenditures $ 114,903 $ 5,454