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LEASES (Supplemental Cash Flow and Other Information) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Operating cash flows for operating leases $ 163.1 $ 110.3
Finance Lease, Interest Payment on Liability 4.3 0.8
Finance Lease, Principal Payments 12.4 1.4
Supplemental non-cash amounts of lease liabilities arising from obtaining right-of-use assets $ 702.0 $ 184.9
Weighted average remaining lease term - operating leases 13 years 9 months 18 days  
Finance Lease, Weighted Average Remaining Lease Term 7 years 1 month 6 days  
Weighted average discount rate - operating leases 9.60%  
Finance Lease, Weighted Average Discount Rate, Percent 5.50%