Finance Assets and Lessor Operating Leases (Credit Quality) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	$ 313,263
Low
Financing Receivable, Credit Quality Indicator [Line Items]
Approximate percentage of portfolio	30.00%
Medium
Financing Receivable, Credit Quality Indicator [Line Items]
Approximate percentage of portfolio	40.00%
High
Financing Receivable, Credit Quality Indicator [Line Items]
Approximate percentage of portfolio	30.00%
North America
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	$ 285,163
Sales-type lease receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	1,280,106	$ 1,352,934
Sales-type lease receivables | North America
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	1,064,996	1,110,898
Sales-type lease receivables | North America | Low
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	853,156	922,414
Sales-type lease receivables | North America | Medium
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	160,969	131,650
Sales-type lease receivables | North America | High
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	22,315	22,110
Sales-type lease receivables | North America | Not Scored
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	28,556	34,724
Loan receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	313,263	329,589
Loan receivables | North America
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	285,163	300,319
Loan receivables | North America | Low
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	215,319	238,620
Loan receivables | North America | Medium
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	53,176	43,952
Loan receivables | North America | High
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	5,379	5,947
Loan receivables | North America | Not Scored
Financing Receivable, Credit Quality Indicator [Line Items]
Gross finance receivables	$ 11,289	$ 11,800