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LEASES - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Lessee, Lease, Description [Line Items]      
Operating lease cost $ 27.9    
Lease commitments for leases not yet commenced $ 1.6    
Operating leases expense   $ 27.0 $ 27.3
Minimum      
Lessee, Lease, Description [Line Items]      
Lease term 1 year    
Lease not yet commenced term of contract 6 months    
Maximum      
Lessee, Lease, Description [Line Items]      
Lease term 21 years    
Lease not yet commenced term of contract 7 years