Finance Assets and Lessor Operating Leases (Aging of Receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total	$ 1,460,327	$ 1,497,711
Still accruing interest	5,574	7,447
Not accruing interest	19,281	22,614
Total	24,855	30,061
1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	1,435,472	1,467,650
Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	24,855	30,061
Sales-type lease receivables | North America
Financing Receivable, Past Due [Line Items]
Total	975,272	994,985
Still accruing interest	3,853	5,128
Not accruing interest	15,061	17,591
Total	18,914	22,719
Sales-type lease receivables | North America | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	956,358	972,266
Sales-type lease receivables | North America | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	18,914	22,719
Sales-type lease receivables | International
Financing Receivable, Past Due [Line Items]
Total	192,273	211,944
Still accruing interest	189	463
Not accruing interest	786	2,513
Total	975	2,976
Sales-type lease receivables | International | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	191,298	208,968
Sales-type lease receivables | International | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	975	2,976
Loan receivables
Financing Receivable, Past Due [Line Items]
Total	292,782	290,782
Loan receivables | North America
Financing Receivable, Past Due [Line Items]
Total	269,797	268,690
Still accruing interest	1,466	1,797
Not accruing interest	3,327	2,409
Total	4,793	4,206
Loan receivables | North America | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	265,004	264,484
Loan receivables | North America | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	4,793	4,206
Loan receivables | International
Financing Receivable, Past Due [Line Items]
Total	22,985	22,092
Still accruing interest	66	59
Not accruing interest	107	101
Total	173	160
Loan receivables | International | 1 - 90 days
Financing Receivable, Past Due [Line Items]
Past due	22,812	21,932
Loan receivables | International | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Past due	$ 173	$ 160