Exit and Implementation Costs (Movement in Exit and Implementation Costs) (Details) - Initiative [Member] - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | 15 Months Ended |
|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Restructuring Reserve [Roll Forward] | |||
| Restructuring reserve, beginning of period | $ 34 | $ 57 | |
| Charges | 6 | 56 | |
| Cash paid | (13) | (79) | $ (103) |
| Restructuring reserve, end of period | 27 | 34 | 34 |
| Exit Costs | |||
| Restructuring Reserve [Roll Forward] | |||
| Restructuring reserve, beginning of period | 25 | 35 | |
| Charges | 0 | 8 | |
| Cash paid | (5) | (18) | (23) |
| Restructuring reserve, end of period | 20 | 25 | 25 |
| Implementation Costs | |||
| Restructuring Reserve [Roll Forward] | |||
| Restructuring reserve, beginning of period | 9 | 22 | |
| Charges | 6 | 48 | |
| Cash paid | (8) | (61) | (80) |
| Restructuring reserve, end of period | $ 7 | $ 9 | $ 9 |