RESTRICTED CASH (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019	[1]	Dec. 31, 2018		Sep. 30, 2018	Jun. 30, 2018	[1]	Dec. 31, 2017	[1]
Restricted Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 564.2			$ 532.7
Long-term restricted cash	7.6			0.0
Held for sale cash and cash equivalents	0.0			3.7
Cash and cash equivalents, and restricted cash at end of period per the statement of cash flows	$ 571.8	$ 428.6		$ 536.4	[1]	$ 452.6	$ 443.9		$ 881.5

[1] The balance at the beginning of the nine month period ended September 30, 2019 includes cash and cash equivalents of $3.7 classified as Held for sale assets in our Consolidated Balance Sheets.