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Impairment charges due to other than temporary declines in certain investments.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Cash and Marketable Securities (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Marketable Securities [Line Items]
Unrealized losses in loss position for more than one year	$ 0		$ 0
Available for sale securities, amortized cost, noncurrent					$ 53,000,000
Available for sale securities, estimated fair value, noncurrent					$ 53,000,000
Proceeds from sales of securities		$ 0	48,000,000	$ 0
Available for sale securities, maturities		0	12,000,000	0
Available for sale securities, gross realized gains		0		0
Available for sale securities, gross realized losses		$ 0		0
Impairment charges due to other than temporary declines in value of certain investments			0	$ 0
Maximum [Member]
Marketable Securities [Line Items]
Available for sale securities, amortized cost, current	1,000,000		1,000,000
Available for sale securities, estimated fair value, current	1,000,000		1,000,000
Proceeds from sales of securities	1,000,000
Available for sale securities, maturities	1,000,000
Available for sale securities, gross realized gains	1,000,000		1,000,000
Available for sale securities, gross realized losses	$ 1,000,000		$ 1,000,000