Current Expected Credit Losses ("CECL") - Year of Origination of Financing Receivables (Details) $ in Millions	Jun. 30, 2021 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 78.4
Total
Financing Receivable, Credit Quality Indicator [Line Items]
2021	3.3
2020	2.3
2019	3.3
2018	8.0
2017	6.4
Prior	53.2
Total	76.5
Notes receivable, short and long-term
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2.3
2020	0.8
2019	2.5
2018	8.0
2017	6.4
Prior	0.1
Total	20.1
Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1.0
2020	1.5
2019	0.8
2018	0.0
2017	0.0
Prior	15.6
Total	18.9
Equipment Notes
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0.0
2020	0.0
2019	0.0
2018	0.0
2017	0.0
Prior	37.5
Total	$ 37.5