Finance Assets (Finance Receivables) (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net investment in finance receivables	$ 1,409,357	$ 1,480,090
North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net investment in finance receivables	1,151,780	1,205,476
International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net investment in finance receivables	257,577	274,614
Sales-type lease receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	1,277,359	1,315,608
Unguaranteed residual values	75,749	88,295
Unearned income	(268,397)	(279,045)
Allowance for credit losses	(13,535)	(10,515)
Net investment in receivables	1,071,176	1,114,343
Sales-type lease receivables \| North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	1,004,241	1,023,549
Unguaranteed residual values	62,358	74,093
Unearned income	(209,870)	(216,720)
Allowance for credit losses	(11,129)	(7,721)
Net investment in receivables	845,600	873,201
Sales-type lease receivables \| International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	273,118	292,059
Unguaranteed residual values	13,391	14,202
Unearned income	(58,527)	(62,325)
Allowance for credit losses	(2,406)	(2,794)
Net investment in receivables	225,576	241,142
Loan receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	345,990	373,865
Allowance for credit losses	(7,809)	(8,118)
Net investment in receivables	338,181	365,747
Loan receivables \| North America
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	313,049	339,373
Allowance for credit losses	(6,869)	(7,098)
Net investment in receivables	306,180	332,275
Loan receivables \| International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross finance receivables	32,941	34,492
Allowance for credit losses	(940)	(1,020)
Net investment in receivables	$ 32,001	$ 33,472
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lease period	3 years
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lease period	5 years

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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