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EMPLOYEE BENEFIT PLANS - Additional Information (Details) - United Kingdom - Pension Plan $ in Millions | 9 Months Ended
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Sep. 30, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items] |
Weighted-average of expected returns on asset investment, percentage | 2.10%
Expected contributions for current year | $ 4.1
Total contributions to date | $ 3.1
Debt Securities |
Defined Benefit Plan Disclosure [Line Items] |
Weighted-average of expected returns on asset investment, percentage | 1.40%
Defined Benefit Plan, Equity Securities |
Defined Benefit Plan Disclosure [Line Items] |
Weighted-average of expected returns on asset investment, percentage | 4.60%

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