SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (New Accounting Pronouncements) (Details) - USD ($)	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right of use assets		$ 853,900,000
Present value of future minimum lease payments	$ 955,200,000	853,900,000
Lease with Affiliate [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right of use assets	$ 650,300,000	604,400,000
Present value of future minimum lease payments		$ 604.4