Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	$ 806,528	$ 560,609
Total adjusted cost	2,423,155	1,812,923
Unrealized Gains	3,198	5,654
Unrealized Losses	4,482	4,258
Fair value, subtotal	2,421,871	1,814,319
Current Investments	683,287	734,838
Long-term Investments	935,720	518,624
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	689,540	432,151
Total adjusted cost	2,275,491	1,652,564
Unrealized Gains	818	4,365
Unrealized Losses	4,455	4,090
Fair value, subtotal	2,271,854	1,652,839
Current Investments	681,887	731,339
Long-term Investments	904,064	489,074
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	30,676	31,901
Unrealized Gains	2,380	1,289
Unrealized Losses	27	168
Fair Value	33,029	33,022
Current Investments	1,400	3,499
Long-term Investments	31,656	29,550
U.S. Treasury securities \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	1,537,906	1,200,658
Unrealized Gains	818	4,352
Unrealized Losses	4,216	4,083
Fair Value	1,534,508	1,200,927
Current Investments	671,907	731,339
Long-term Investments	865,999	469,319
Corporate debt securities \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	48,045	19,755
Unrealized Gains		13
Unrealized Losses	239	7
Fair Value	47,806	19,761
Current Investments	9,980
Long-term Investments	38,065	19,755
Corporate debt securities \| Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	17,001	17,401
Unrealized Losses	27	27
Fair Value	16,974	17,374
Current Investments	1,400	999
Long-term Investments	15,601	16,402
Notes receivable \| Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjusted cost	13,675	14,500
Unrealized Gains	2,380	1,289
Unrealized Losses		141
Fair Value	16,055	15,648
Current Investments		2,500
Long-term Investments	16,055	13,148
Cash
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	116,988	128,458
Money market funds \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	612,339	355,872
Time deposits \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash	$ 77,201	$ 76,279

Cash And Cash Equivalents At Carrying Value And Debt Securities, Held-to-Maturity, Amortized Cost

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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