Finance Assets and Lessor Operating Leases (Aging of Receivables) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total	$ 1,450,652	$ 1,497,711
Still accruing interest	2,724	7,447
Not accruing interest	15,575	22,614
Total	18,299	30,061
1 - 90 days
Financing Receivable, Past Due [Line Items]
Total	1,432,353	1,467,650
Greater than 90 days
Financing Receivable, Past Due [Line Items]
Total	18,299	30,061
Sales-type lease receivables | North America
Financing Receivable, Past Due [Line Items]
Total	974,109	994,985
Still accruing interest	2,449	5,128
Not accruing interest	9,601	17,591
Total	12,050	22,719
Sales-type lease receivables | North America | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Total	962,059	972,266
Sales-type lease receivables | North America | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Total	12,050	22,719
Sales-type lease receivables | International
Financing Receivable, Past Due [Line Items]
Total	195,085	211,944
Still accruing interest	275	463
Not accruing interest	1,063	2,513
Total	1,338	2,976
Sales-type lease receivables | International | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Total	193,747	208,968
Sales-type lease receivables | International | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Total	1,338	2,976
Loan receivables
Financing Receivable, Past Due [Line Items]
Total	281,458	290,782
Loan receivables | North America
Financing Receivable, Past Due [Line Items]
Total	257,766	268,690
Still accruing interest	0	1,797
Not accruing interest	4,705	2,409
Total	4,705	4,206
Loan receivables | North America | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Total	253,061	264,484
Loan receivables | North America | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Total	4,705	4,206
Loan receivables | International
Financing Receivable, Past Due [Line Items]
Total	23,692	22,092
Still accruing interest	0	59
Not accruing interest	206	101
Total	206	160
Loan receivables | International | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Total	23,486	21,932
Loan receivables | International | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Total	$ 206	$ 160