Current Expected Credit Losses ("CECL") - Delinquency Status of Receivables (Details) $ in Millions	Dec. 31, 2021 USD ($)
Financing Receivable, Past Due [Line Items]
Financing receivables	$ 71.6
Current
Financing Receivable, Past Due [Line Items]
Financing receivables	70.2
30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	1.4
Notes receivable, short-term
Financing Receivable, Past Due [Line Items]
Financing receivables	6.4
Notes receivable, short-term | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	5.0
Notes receivable, short-term | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, short-term | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, short-term | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, short-term | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	1.4
Notes receivable, long-term
Financing Receivable, Past Due [Line Items]
Financing receivables	13.3
Notes receivable, long-term | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	13.3
Notes receivable, long-term | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, long-term | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, long-term | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, long-term | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables
Financing Receivable, Past Due [Line Items]
Financing receivables	16.7
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	16.7
Lease Receivables | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Receivables
Financing Receivable, Past Due [Line Items]
Financing receivables	33.4
Equipment Receivables | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	33.4
Equipment Receivables | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Receivables | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Receivables | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Receivables | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other
Financing Receivable, Past Due [Line Items]
Financing receivables	1.8
Other | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	1.8
Other | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	$ 0.0