STOCK-BASED COMPENSATION (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Stock-based compensation cost, allocation of recognized costs | |||
| Pretax stock-based compensation expense | $ 64 | $ 100 | $ 95 |
| Income tax benefits | (2) | (7) | (5) |
| Stock-based compensation cost, net of tax | 62 | 93 | 90 |
| Unrecognized compensation cost related to non-vested awards | $ 125 | ||
| Unrecognized compensation cost related to non-vested awards, weighted average period of recognition | 2 years 7 months 6 days | ||
| Cost of service | |||
| Stock-based compensation cost, allocation of recognized costs | |||
| Pretax stock-based compensation expense | $ 9 | 12 | 16 |
| Selling, general and administrative expense | |||
| Stock-based compensation cost, allocation of recognized costs | |||
| Pretax stock-based compensation expense | $ 55 | $ 89 | $ 78 |