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Stockholders' Equity and Employee Benefit Plans - Narrative (Details) shares in Thousands, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2023 shares | Mar. 31, 2023 shares | Mar. 31, 2022 shares | Mar. 31, 2021 shares | Mar. 31, 2020 shares | Dec. 31, 2023 USD ($) installmentAnniversary shares | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of installment anniversaries | installmentAnniversary |  |  |  |  |  | 3 |  |
Granted | shares |  |  |  |  |  | 1,319 |  |
Share-based compensation |  |  |  |  |  | $ 28 | $ 29 | $ 29
Unrecognized compensation expense |  |  |  |  |  | $ 48 |  |
Unrecognized compensation expense, weighted average period |  |  |  |  |  | 1 year |  |
Matching contributions amount |  |  |  |  |  | $ 11 | 18 |
Share-Based Payment Arrangement, Expense, Tax Benefit |  |  |  |  |  | $ 12 | $ 11 | $ 9
Tranche One |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Employer percent match of contribution |  |  |  |  |  | 100.00% |  |
Percent match of gross pay |  |  |  |  |  | 2.00% |  |
Tranche Two |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Employer percent match of contribution |  |  |  |  |  | 50.00% |  |
Percent match of gross pay |  |  |  |  |  | 4.00% |  |
Performance Stock Units |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Granted | shares | 200 | 100 | 100 | 300 | 500 |  |  |
Vesting period |  |  |  |  |  | 3 years |  |
Performance Stock Units | Min |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting percentage of target awards |  |  |  | 0.00% | 0.00% |  |  |
Vesting period |  |  |  |  |  | 3 years |  |
Performance Stock Units | Min | Relative TSR |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting percentage of target awards | 0.00% | 0.00% |  |  |  |  |  |
Performance Stock Units | Min | Annualized TBV |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting percentage of target awards | 0.00% | 0.00% |  |  |  |  |  |
Performance Stock Units | Max |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting percentage of target awards |  |  |  | 200.00% | 200.00% |  |  |
Vesting period |  |  |  |  |  | 5 years |  |
Performance Stock Units | Max | Relative TSR |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting percentage of target awards | 200.00% | 200.00% |  |  |  |  |  |
Performance Stock Units | Max | Annualized TBV |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting percentage of target awards | 200.00% | 200.00% |  |  |  |  |  |

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