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LEASES - Narrative (Details)
Dec. 31, 2021
Lessee, Lease, Description [Line Items]  
Weighted average remaining lease term 1 year 9 months 10 days
Weighted-average discount rate - operating lease 2.42%
Minimum  
Lessee, Lease, Description [Line Items]  
Lease term 1 year
Maximum  
Lessee, Lease, Description [Line Items]  
Lease term 5 years
Drilling Rig | Minimum  
Lessee, Lease, Description [Line Items]  
Lease term 1 year
Drilling Rig | Maximum  
Lessee, Lease, Description [Line Items]  
Lease term 2 years