Investments in Unconsolidated Subsidiaries - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Schedule of Equity Method Investments [Line Items] | ||||
| Asset impairments | $ 0 | |||
| Equity Method Investments | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Estimated fair value of investment | $ 7 | $ 20 | $ 20 | |
| Real Estate Investment | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Estimated fair value of investment | $ 57 | $ 62 | ||
| Ownership percentage | Minimum | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Equity method investments in unconsolidated subsidiaries, variations in ownership percentage | 1.00% | 1.00% | ||
| Ownership percentage | Maximum | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Equity method investments in unconsolidated subsidiaries, variations in ownership percentage | 50.00% | 50.00% | ||