DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Cash and Cash Equivalents (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents		$ 104.3	$ 87.3
Restricted cash		0.2	0.2
Total cash, cash equivalents and restricted cash	[1]	$ 104.5	$ 87.5	$ 87.4

[1] These amounts include restricted cash of $0.2 million and $0.2 million as of December 31, 2019 and 2018, respectively, which represent cash on deposit in lieu of a mandatory prepayment under the 2018 Foreign Asset-Based Term Facility, and cash on deposit to support outstanding undrawn letters of credit, which were included within other assets in the Company's consolidated balance sheets.