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PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - SCHEDULE OF PENSION PLAN ASSETS WITHIN THE FAIR VALUE HIERARCHY (Details) - Pension Benefits - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | $ 836,843 | $ 848,432 | $ 1,098,191
Fair Value, Measurements, Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 836,843 | 848,432 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 793,732 | 818,510 |
Fair Value, Measurements, Recurring | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 909 | 327 |
Fair Value, Measurements, Recurring | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 42,202 | 29,595 |
Fair Value, Measurements, Recurring | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 43,711 | 30,488 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 600 | 566 |
Fair Value, Measurements, Recurring | Cash and cash equivalents | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 909 | 327 |
Fair Value, Measurements, Recurring | Cash and cash equivalents | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 42,202 | 29,595 |
Fair Value, Measurements, Recurring | Cash and cash equivalents | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | International all-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 395 |  |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 395 |  |
Fair Value, Measurements, Recurring | International all-cap | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 |  |
Fair Value, Measurements, Recurring | International all-cap | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 |  |
Fair Value, Measurements, Recurring | International all-cap | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 |  |
Fair Value, Measurements, Recurring | Global all-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 209,245 | 206,636 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 209,245 | 206,636 |
Fair Value, Measurements, Recurring | Global all-cap | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Global all-cap | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Global all-cap | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | U.S. government/agency |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 186,095 | 173,122 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 186,095 | 173,122 |
Fair Value, Measurements, Recurring | U.S. government/agency | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | U.S. government/agency | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | U.S. government/agency | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 60,293 | 58,646 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 60,293 | 58,646 |
Fair Value, Measurements, Recurring | Corporate bonds | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Corporate bonds | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Corporate bonds | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | International government/corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 29,254 | 26,489 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 29,254 | 26,489 |
Fair Value, Measurements, Recurring | International government/corporate bonds | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | International government/corporate bonds | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | International government/corporate bonds | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Diversified credit |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 123,081 | 109,926 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 123,081 | 109,926 |
Fair Value, Measurements, Recurring | Diversified credit | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Diversified credit | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Diversified credit | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Global diversified assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 68,856 | 95,243 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 68,856 | 95,243 |
Fair Value, Measurements, Recurring | Global diversified assets | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Global diversified assets | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Global diversified assets | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Real assets fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 115,913 | 147,882 |
Defined Benefit Plan, Plan Assets Measured at Net Asset Value | 115,913 | 147,882 |
Fair Value, Measurements, Recurring | Real assets fund | Quoted prices in active markets of identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Real assets fund | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0 |
Fair Value, Measurements, Recurring | Real assets fund | Significant other unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Amount | $ 0 | $ 0 |

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