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LONG-TERM DEBT AND FINANCING ARRANGEMENTS - Letters of credit & Surety bonds (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Financing Arrangements    
Outstanding letters of credit $ 10.6 $ 12.3
Accounts receivable securitization program    
Financing Arrangements    
Outstanding letters of credit 10.0 11.7
Surety bonds    
Financing Arrangements    
Outstanding surety bonds under uncollateralized bond programs $ 50.9 $ 61.7