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Pensions and Other Benefit Plans - Defined Benefit Plans’ Consolidated Assets by Asset Category (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Mar. 31, 2023
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | $ 199,592 | $ 231,667
Measured at NAV |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 98,117 | 125,042
(Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 101,475 | 106,625
(Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
(Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 15,266 | 27,576
Equity securities | Measured at NAV |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Equity securities | (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 15,266 | 27,576
Equity securities | (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Equity securities | (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Fixed income securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 81,890 | 76,701
Fixed income securities | Measured at NAV |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Fixed income securities | (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 81,890 | 76,701
Fixed income securities | (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Fixed income securities | (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Common collective trusts |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 98,117 | 116,477
Common collective trusts | Measured at NAV |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 98,117 | 116,477
Common collective trusts | (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Common collective trusts | (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Common collective trusts | (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Alternative real estate |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 8,565
Alternative real estate | Measured at NAV |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories |  | 8,565
Alternative real estate | (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories |  | 0
Alternative real estate | (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories |  | 0
Alternative real estate | (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories |  | 0
Cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 4,319 | 2,348
Cash equivalents | Measured at NAV |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Cash equivalents | (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 4,319 | 2,348
Cash equivalents | (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | 0 | 0
Cash equivalents | (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset categories | $ 0 | $ 0

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