ACCOUNTS AND OTHER RECEIVABLES - Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 23.5
Add: Charges	19.4	$ 2.3
Less: Net Charge-offs/ (Recoveries) and Other	1.2
Balance at End of Period	45.0
Trade accounts receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	8.4
Add: Charges	11.5
Less: Net Charge-offs/ (Recoveries) and Other	1.2
Balance at End of Period	22.0
Trade notes receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0.1
Add: Charges	(0.1)
Less: Net Charge-offs/ (Recoveries) and Other	0.0
Balance at End of Period	0.0
Total trade receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	8.5
Add: Charges	11.4
Less: Net Charge-offs/ (Recoveries) and Other	1.2
Balance at End of Period	22.0
Other notes receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	15.0
Add: Charges	8.0
Less: Net Charge-offs/ (Recoveries) and Other	0.0
Balance at End of Period	23.0
Cumulative effect adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	3.3
Cumulative effect adjustment | Trade accounts receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	3.3
Cumulative effect adjustment | Trade notes receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0.0
Cumulative effect adjustment | Total trade receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	3.3
Cumulative effect adjustment | Other notes receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0.0
Adjusted balance
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	26.8
Adjusted balance | Trade accounts receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	11.7
Adjusted balance | Trade notes receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0.1
Adjusted balance | Total trade receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	11.8
Adjusted balance | Other notes receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 15.0