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RETIREMENT AND DEFERRED COMPENSATION PLANS - Narrative (Details)
6 Months Ended
Jun. 30, 2021
USD ($)
United States  
Changes in the benefit obligations and plan assets  
Minimum funding requirements $ 0
Defined benefit plan, plan assets, contributions by employer 1,000,000.0
Foreign Plans  
Changes in the benefit obligations and plan assets  
Defined benefit plan, plan assets, contributions by employer $ 2,300,000