ACCOUNTS AND OTHER RECEIVABLES - Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 23.5
Add: Charges	20.8	$ 2.2
Less: Net Charge-offs/ (Recoveries) and Other	0.8
Balance at End of Period	46.8
Trade accounts receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	8.4
Add: Charges	12.7
Less: Net Charge-offs/ (Recoveries) and Other	0.8
Balance at End of Period	23.6
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	12.6
Less: Net Charge-offs/ (Recoveries) and Other	0.8
Balance at End of Period	23.6
Other notes receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	15.0
Add: Charges	8.2
Less: Net Charge-offs/ (Recoveries) and Other	0.0
Balance at End of Period	23.2
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