BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Cash, Cash Equivalents, And Restricted Cash) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 1,501.2	$ 1,208.7	$ 802.1
Restricted cash	76.8	96.2	152.8
Total cash, cash equivalents and restricted cash	$ 1,578.0	$ 1,304.9	$ 954.9	$ 936.5