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Fair Value Measurements and Investments Fair Value and Gross Unrealized Losses with Unrealized Losses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (2,656,800) $ (1,252,300) $ (5,193,600)
Asset at Fair Value, Changes in Fair Value Resulting from Changes in Assumptions (38,400)    
Interest expense 48,900 49,400 38,100
Income from operations 269,000 337,800 482,600
Foreign currency exchange gains, net (3,900) (7,300) (200)
Other Nonoperating Income (Expense) (90,300) (106,500) (44,700)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest (2,342,500) (850,100) (4,704,200)
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair Value, Option, Changes in Fair Value, Gain (Loss) 2,656,800 1,252,300 5,193,600
Foreign currency exchange gains, net 3,900 7,300 200
Other Nonoperating Income (Expense) 90,300 106,500 44,700
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Interest expense (48,900) (49,400) (38,100)
Operating Segments [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Income from operations $ 1,378,900 $ 1,426,900 $ 1,567,300