Finance Assets and Lessor Operating Leases (Credit Quality) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 1,429,332	$ 1,497,711
Low
Financing Receivable, Credit Quality Indicator [Line Items]
Approximate percentage of portfolio	5.00%
Total	$ 960,381	973,245
Medium
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 198,338	229,757
Medium | Minimum
Financing Receivable, Credit Quality Indicator [Line Items]
Approximate percentage of portfolio	5.00%
Medium | Maximum
Financing Receivable, Credit Quality Indicator [Line Items]
Approximate percentage of portfolio	10.00%
High
Financing Receivable, Credit Quality Indicator [Line Items]
Approximate percentage of portfolio	10.00%
Total	$ 24,406	23,046
Not Scored
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 246,207	271,663
International
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of applications approved or denied	80.00%
Sales-type lease receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 316,500	394,394
2020	307,064	361,048
2019	267,480	254,898
2018	164,655	134,999
2017	65,543	45,852
Prior	26,027	15,738
Sales-type lease receivables | Low
Financing Receivable, Credit Quality Indicator [Line Items]
2021	211,706	256,573
2020	206,401	228,344
2019	174,389	165,244
2018	111,650	87,346
2017	44,059	30,518
Prior	17,317	12,249
Sales-type lease receivables | Medium
Financing Receivable, Credit Quality Indicator [Line Items]
2021	35,526	50,785
2020	38,343	49,946
2019	36,921	37,168
2018	22,257	21,388
2017	10,355	6,470
Prior	5,551	2,375
Sales-type lease receivables | High
Financing Receivable, Credit Quality Indicator [Line Items]
2021	4,169	6,182
2020	5,335	5,396
2019	4,744	3,782
2018	3,013	1,974
2017	1,050	1,051
Prior	830	143
Sales-type lease receivables | Not Scored
Financing Receivable, Credit Quality Indicator [Line Items]
2021	65,099	80,854
2020	56,985	77,362
2019	51,426	48,704
2018	27,735	24,291
2017	10,079	7,813
Prior	2,329	971
Sales-type lease receivables | International
Financing Receivable, Credit Quality Indicator [Line Items]
Total	186,979	211,944
Loan receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Total	282,063	290,782
Loan receivables | Low
Financing Receivable, Credit Quality Indicator [Line Items]
Total	194,859	192,971
Loan receivables | Medium
Financing Receivable, Credit Quality Indicator [Line Items]
Total	49,385	61,625
Loan receivables | High
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,265	4,518
Loan receivables | Not Scored
Financing Receivable, Credit Quality Indicator [Line Items]
Total	32,554	31,668
Loan receivables | International
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 22,410	$ 22,092