FINANCE RECEIVABLES - Finance Receivable Credit Quality Indicators (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, 2020 [Abstract]
Originated in current fiscal year	$ 19.4	$ 87.4
Originated in prior fiscal year	58.7	64.3
Originated two years before current fiscal year	57.9	8.0
Originated three years before current fiscal year	6.2	4.6
Originated four years before current fiscal year	4.5	1.9
Prior	1.5	0.0
Total finance receivables	148.2	166.2
Superior
Financing Receivable, Recorded Investment, 2020 [Abstract]
Originated in current fiscal year	1.2	1.7
Originated in prior fiscal year	0.1	0.0
Originated two years before current fiscal year	0.0	0.0
Originated three years before current fiscal year	0.0	0.0
Originated four years before current fiscal year	0.0	0.0
Prior	0.0	0.0
Total finance receivables	1.3	1.7
Above Average
Financing Receivable, Recorded Investment, 2020 [Abstract]
Originated in current fiscal year	6.5	12.6
Originated in prior fiscal year	2.4	3.0
Originated two years before current fiscal year	2.6	0.0
Originated three years before current fiscal year	0.0	0.0
Originated four years before current fiscal year	0.0	1.7
Prior	1.4	0.0
Total finance receivables	12.9	17.3
Average
Financing Receivable, Recorded Investment, 2020 [Abstract]
Originated in current fiscal year	9.5	20.8
Originated in prior fiscal year	30.3	17.1
Originated two years before current fiscal year	32.8	3.4
Originated three years before current fiscal year	4.2	0.7
Originated four years before current fiscal year	0.0	0.1
Prior	0.0	0.0
Total finance receivables	76.8	42.1
Below Average
Financing Receivable, Recorded Investment, 2020 [Abstract]
Originated in current fiscal year	2.2	44.6
Originated in prior fiscal year	18.1	43.1
Originated two years before current fiscal year	21.9	4.6
Originated three years before current fiscal year	2.0	3.9
Originated four years before current fiscal year	4.5	0.0
Prior	0.1	0.0
Total finance receivables	48.8	96.2
Sub Standard
Financing Receivable, Recorded Investment, 2020 [Abstract]
Originated in current fiscal year	0.0	7.7
Originated in prior fiscal year	7.8	1.1
Originated two years before current fiscal year	0.6	0.0
Originated three years before current fiscal year	0.0	0.0
Originated four years before current fiscal year	0.0	0.1
Prior	0.0	0.0
Total finance receivables	$ 8.4	$ 8.9