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Commitments for Potential Future Investments

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Percentage of voting equity interest acquired in business combination.

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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), classified as current.

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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

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- Definition

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 income (loss) for proportionate share of equity method investee's income (loss).

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Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Jul. 31, 2026	Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of investment	$ 327		$ 327			$ 301
Exchange traded equity securities	15		15			12
Equity investments without readily determinable market value	16		16			17
Deasterra Partners, S.L.
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Ownership share (as a percent)					60.00%
Private Equity Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of investment	254		254			220
Equity method investment income	7	$ 15	6	$ 25
Commitments for potential future investments	201		201
Private Insurance and Consulting
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of investment	73		73			81
Equity Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Exchange traded equity securities	27		27			$ 24
Mark-to-market gains (losses) on other investments	$ 1		$ 3	$ 2
Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revenue target period (in years)			2 years	2 years
Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revenue target period (in years)			4 years	4 years