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Basis of Presentation and Nature of Business - Additional Information (Details) - Alight Holdings | Sep. 30, 2025
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Maximum |
Basis Of Presentation And Nature Of Business [Line Items] |
Non-voting ownership percentage held by noncontrolling interest | 1.00%
Special Purpose Acquisition Company | Alight |
Basis Of Presentation And Nature Of Business [Line Items] |
Percentage of economic interest | 99.00%
Business combination, percentage of voting power | 100.00%

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