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Investments - Equity Method Investments (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Equity method investments	$ 388	$ 347
Equity investments without readily determinable fair values	183	104
Equity investments measured using NAV practical expedient	$ 6	$ 0

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- Definition

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 measured at fair value with change in fair value recognized in net income (FV-NI).

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