Finance Assets (Credit Quality) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Sales-type lease receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 1,272,690	$ 1,315,608
Sales-type lease receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	1,004,491	1,023,549
Loan receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	329,589	373,865
Loan receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 300,319	339,373
Low
Accounts, Notes, Loans and Financing Receivable [Line Items]
Approximate percentage of portfolio	30.00%
Low | Sales-type lease receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 834,230	819,776
Low | Loan receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 238,620	262,646
Medium
Accounts, Notes, Loans and Financing Receivable [Line Items]
Approximate percentage of portfolio	40.00%
Medium | Sales-type lease receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 118,945	148,000
Medium | Loan receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 43,952	56,744
High
Accounts, Notes, Loans and Financing Receivable [Line Items]
Approximate percentage of portfolio	30.00%
High | Sales-type lease receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 19,981	21,728
High | Loan receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	5,947	6,791
Not Scored | Sales-type lease receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	31,335	34,045
Not Scored | Loan receivables | North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 11,800	$ 13,192