v3.25.3

Investments - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
Investments - Narrative (Details) - USD ($)	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Available-for-sale debt securities	$ 0		$ 0		$ 0
Debt securities in an unrealized loss position	267,000,000		267,000,000		1,100,000,000
Debt securities, unrealized loss			12,000,000		17,000,000
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	60,000,000		60,000,000		269,000,000
Debt securities, continuous unrealized loss position, 12 months or longer	12,000,000		12,000,000		14,000,000
Equity method investments	48,000,000		48,000,000		47,000,000
Impairment in equity method investments	0		7,000,000	$ 0
Equity securities without readily determinable fair value, carrying value	16,000,000		16,000,000		$ 38,000,000
Impairment loss			30,000,000	$ 45,000,000
Upward adjustments	8,000,000	$ 0
Downward adjustments		$ 0
Cumulative impairment	$ 108,000,000		$ 108,000,000

Amount excluding accrued interest, of allowance for credit 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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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 accumulated unrealized loss on 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 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of other-than-temporary decline in value that has been recognized against investment accounted for under equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of investment in equity security without readily determinable fair value.

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