Separation of Kyndryl (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Kyndryl Holdings, Inc | |||
| Discontinued Operations | |||
| Costs to Kyndryl for upgraded hardware | $ 0 | ||
| Upgraded hardware period | 2 years | ||
| Kyndryl Holdings, Inc | Maximum | |||
| Discontinued Operations | |||
| Transition services period | 2 years | ||
| Managed infrastructure services unit | Disposed by separation | |||
| Discontinued Operations | |||
| Separation costs | $ 5,000,000 | $ 1,042,000,000 | $ 21,000,000 |