OTHER LONG-TERM OBLIGATIONS AND DEFERRED CREDITS - Summary of Other Long-Term Obligations and Deferred Credits (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred Credits and Other Liabilities [Abstract]
Self-insurance reserves	$ 16.9	$ 13.9
Contingent consideration	16.4	24.5
Asset retirement obligations	5.2	4.2
Income taxes	4.9	5.7
Deferred consideration	0.6	2.9
Other	5.1	3.6
Total	$ 49.1	$ 54.8

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due beyond one year or the operating cycle, whichever is longer. Alternate captions include income taxes payable, noncurrent.

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