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v3.25.2

Segment Reporting - Additional Information (Detail) $ in Millions |  |  |  | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 28, 2025 USD ($) | Dec. 19, 2024 USD ($) | Sep. 19, 2024 USD ($) | Jun. 30, 2025 USD ($) Segment | Dec. 31, 2024 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |
Number of reportable operating segments | Segment |  |  |  | 3 |
Total assets |  |  |  | $ 50,222 | $ 51,789
Healthcare Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Gain on sale of subsidiaries, net |  |  | $ 219 |  |
Government Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Gain on sale of subsidiaries, net |  | $ (28) |  |  |
Business Processing [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets |  |  |  | 0 | 103
Business Processing [Member] | Government Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Sale of equity interests in subsidiary | $ 44 |  |  |  |
Other Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets |  |  |  | $ 1,200 | $ 1,300

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