Finance Assets and Lessor Operating Leases (Aging of Receivables) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Total	$ 1,465,274	$ 1,606,227
Still accruing interest	5,583	8,131
Not accruing interest	21,882	22,667
Total	27,465	30,798
1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	1,437,809	1,575,429
Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	27,465	30,798
Sales-type lease receivables | North America
Financing Receivable, Past Due [Line Items]
Total	981,475	1,055,852
Still accruing interest	3,365	4,835
Not accruing interest	16,764	18,105
Total	20,129	22,940
Sales-type lease receivables | North America | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	961,346	1,032,912
Sales-type lease receivables | North America | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	20,129	22,940
Sales-type lease receivables | International
Financing Receivable, Past Due [Line Items]
Total	201,590	224,202
Still accruing interest	699	1,081
Not accruing interest	1,326	2,302
Total	2,025	3,383
Sales-type lease receivables | International | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	199,565	220,819
Sales-type lease receivables | International | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	2,025	3,383
Loan receivables
Financing Receivable, Past Due [Line Items]
Total	282,209
Loan receivables | North America
Financing Receivable, Past Due [Line Items]
Total	259,832	298,247
Still accruing interest	1,461	2,094
Not accruing interest	3,569	2,152
Total	5,030	4,246
Loan receivables | North America | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	254,802	294,001
Loan receivables | North America | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	5,030	4,246
Loan receivables | International
Financing Receivable, Past Due [Line Items]
Total	22,377	27,926
Still accruing interest	58	121
Not accruing interest	223	108
Total	281	229
Loan receivables | International | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	22,096	27,697
Loan receivables | International | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	$ 281	$ 229