Income Taxes - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Mar. 31, 2019 |
Apr. 01, 2017 |
|
| Income Tax Contingency [Line Items] | ||||||
| Effective income tax rate | 40.20% | 38.60% | 30.90% | 42.40% | ||
| Foreign earnings not indefinitely reinvested | $ 475 | $ 475 | ||||
| Potential federal and state cost from tax examinations | 472 | |||||
| Liability for uncertain tax positions increase | 16 | |||||
| Reasonably possible reduction in liability for uncertain tax positions | $ 7 | $ 7 | ||||
| HPES | ||||||
| Income Tax Contingency [Line Items] | ||||||
| Tax indemnification receivable, uncertain tax positions | $ 27 | |||||
| Tax indemnification receivable, tax indemnification payable | 60 | |||||
| Tax indemnification payable | $ 104 | |||||
| Perspecta | ||||||
| Income Tax Contingency [Line Items] | ||||||
| Tax indemnification payable | $ 6 | |||||
| Tax indemnification receivable | $ 50 | |||||