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Fair Value Measurements (Narrative) (Details)	Sep. 30, 2024	Jul. 16, 2024	Dec. 31, 2023	Oct. 07, 2020	Nov. 15, 2019
4.625% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate				4.625%
3.625% Convertible Notes | Convertible Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate		3.625%
1.75% Convertible Notes | Convertible Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate					1.75%
Minimum | Measurement Input, Discount Rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, measurement input	0.13		0.13
Minimum | Measurement Input, Conversion Term
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, term	1 year
Maximum | Measurement Input, Discount Rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, measurement input	0.15		0.15
Maximum | Measurement Input, Conversion Term
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, term			2 years

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Contractual interest rate for funds borrowed, under the debt agreement.

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