Acquisitions/Divestitures - Divestitures (Details) - Expected $ in Millions |
3 Months Ended | 6 Months Ended |
|---|---|---|
|
Jun. 30, 2019
USD ($)
|
Jun. 30, 2019
USD ($)
entity
|
|
| Other | ||
| Divestitures | ||
| Number of divestitures | entity | 3 | |
| Other | Minimum | ||
| Divestitures | ||
| Pre-tax gain on sale of business | $ 500 | |
| Other | Maximum | ||
| Divestitures | ||
| Pre-tax gain on sale of business | $ 700 | |
| Select Standalone Cognitive Solutions Software Products | ||
| Divestitures | ||
| Cash consideration | $ 1,775 | |
| Consideration receivable at closing (as a percent) | 50.00% | |
| Select Standalone Cognitive Solutions Software Products | Minimum | ||
| Divestitures | ||
| Period after closing for receipt of remaining consideration | 12 months | |
| Select Standalone Cognitive Solutions Software Products | Maximum | ||
| Divestitures | ||
| Period after closing for receipt of remaining consideration | 15 months |