Finance Assets and Lessor Operating Leases (Aging of Receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Total	$ 1,497,711	$ 1,606,227
Still accruing interest	7,447	8,131
Not accruing interest	22,614	22,667
Total	30,061	30,798
Past due amounts 0 - 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	1,467,650	1,575,429
Greater Than 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	30,061	30,798
Sales-type lease receivables | North America
Financing Receivable, Past Due [Line Items]
Total	994,985	1,055,852
Still accruing interest	5,128	4,835
Not accruing interest	17,591	18,105
Total	22,719	22,940
Sales-type lease receivables | North America | Past due amounts 0 - 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	972,266	1,032,912
Sales-type lease receivables | North America | Greater Than 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	22,719	22,940
Sales-type lease receivables | International
Financing Receivable, Past Due [Line Items]
Total	211,944	224,202
Still accruing interest	463	1,081
Not accruing interest	2,513	2,302
Total	2,976	3,383
Sales-type lease receivables | International | Past due amounts 0 - 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	208,968	220,819
Sales-type lease receivables | International | Greater Than 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	2,976	3,383
Loan receivables
Financing Receivable, Past Due [Line Items]
Total	290,782
Loan receivables | North America
Financing Receivable, Past Due [Line Items]
Total	268,690	298,247
Still accruing interest	1,797	2,094
Not accruing interest	2,409	2,152
Total	4,206	4,246
Loan receivables | North America | Past due amounts 0 - 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	264,484	294,001
Loan receivables | North America | Greater Than 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	4,206	4,246
Loan receivables | International
Financing Receivable, Past Due [Line Items]
Total	22,092	27,926
Still accruing interest	59	121
Not accruing interest	101	108
Total	160	229
Loan receivables | International | Past due amounts 0 - 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	21,932	27,697
Loan receivables | International | Greater Than 90 days
Financing Receivable, Past Due [Line Items]
Aging of receivables	$ 160	$ 229