SUPPLEMENTAL BALANCE SHEET INFORMATION - Components of Prepaid Expenses and Other (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Prepaid taxes and tax refunds receivable	$ 115.5	$ 141.1
Receivables other than trade	48.1	51.4
Prepaid brochure costs, paper and other literature	10.3	13.1
Other	36.3	46.5
Prepaid expenses and other	210.2	$ 252.1
Shareholder Litigation
Loans and Leases Receivable Disclosure [Line Items]
Insurance receivables	12.0
Contingent liability	$ 15.0