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Investments in Unconsolidated Subsidiaries - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Schedule of Equity Method Investments [Line Items]
Non-cash asset impairment charges related to equity method investments	$ 20	$ 9
Ownership Percentage | Minimum
Schedule of Equity Method Investments [Line Items]
Equity method investments in unconsolidated subsidiaries, variations in ownership percentage	1.00%
Ownership Percentage | Maximum
Schedule of Equity Method Investments [Line Items]
Equity method investments in unconsolidated subsidiaries, variations in ownership percentage	50.00%

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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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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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