LEASES - Credit Quality Indicator (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2021	$ 108.7
2020	139.6
2019	52.0
2018	22.5
2017	8.1
Prior	2.7
Net Investment	333.6	$ 275.0
High
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2021	45.5
2020	51.9
2019	30.2
2018	6.0
2017	3.5
Prior	1.3
Net Investment	138.4
Moderate
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2021	62.4
2020	84.6
2019	21.8
2018	15.6
2017	4.1
Prior	1.1
Net Investment	189.6
Low
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2021	0.8
2020	3.1
2019	0.0
2018	0.9
2017	0.5
Prior	0.3
Net Investment	$ 5.6

Amount, before allowance for credit loss, of net investment in sales-type lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
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Amount of net investment in sales-type lease originated more than five years prior to current fiscal year.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of net investment in sales-type lease originated four years prior to current fiscal year.

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Amount of net investment in sales-type lease originated in current fiscal year.

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Amount of net investment in sales-type lease originated in fiscal year prior to current fiscal year.

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Amount of net investment in sales-type lease originated three years prior to current fiscal year.

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Amount of net investment in sales-type lease originated two years prior to current fiscal year.

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