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LEASES - Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Leases [Abstract]    
Operating cash flows from operating leases $ 14.3 $ 39.5
Finance cash flows from finance leases 0.0 0.2
Right-of-use assets obtained in exchange for new operating lease liabilities $ 17.0 $ 22.8