LEASES (Lease Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating lease right of use assets		$ 853.9
Finance lease assets	$ 24.2		$ 0.0
Lease, Right of Use Asset	980.6
Operating Lease Liability, Current	151.2
Current finance lease liabilities	6.5		0.0
Long-term lease obligations	804.0
Long-term finance lease liabilities	18.4		0.0
Lease Liability	980.1
Third Party Lease [Member]
Operating lease right of use assets	306.1
Operating Lease Liability, Current	72.0
Long-term lease obligations	232.9		0.0
Lease with Affiliate [Member]
Operating lease right of use assets	650.3	$ 604.4
Operating Lease Liability, Current	79.2
Long-term lease obligations	$ 571.1		$ 0.0