Finance Assets (Aging of Receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 1,925,765	$ 2,077,945
Past due amounts greater than 90 days - Still accruing interest	6,658	8,448
Past due amounts greater than 90 days - Not accruing interest	21,689	26,790
North America | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	1,212,390	1,286,624
Past due amounts greater than 90 days - Still accruing interest	5,041	5,931
Past due amounts greater than 90 days - Not accruing interest	14,117	15,630
North America | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	363,672	376,987
Past due amounts greater than 90 days - Still accruing interest	0	0
Past due amounts greater than 90 days - Not accruing interest	3,620	4,572
International | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	308,099	366,669
Past due amounts greater than 90 days - Still accruing interest	1,617	2,517
Past due amounts greater than 90 days - Not accruing interest	3,465	6,215
International | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	41,604	47,665
Past due amounts greater than 90 days - Still accruing interest	0	0
Past due amounts greater than 90 days - Not accruing interest	487	373
Less than 30 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	1,827,221	1,970,209
Less than 30 days | North America | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	1,147,455	1,217,623
Less than 30 days | North America | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	348,730	359,672
Less than 30 days | International | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	291,777	347,236
Less than 30 days | International | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	39,259	45,678
31 - 60 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	43,978	39,895
31 - 60 days | North America | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	27,037	23,242
31 - 60 days | North America | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	8,010	9,245
31 - 60 days | International | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	7,496	6,207
31 - 60 days | International | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	1,435	1,201
61 - 90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	26,219	32,603
61 - 90 days | North America | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	18,740	24,198
61 - 90 days | North America | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	3,312	3,498
61 - 90 days | International | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	3,744	4,494
61 - 90 days | International | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	423	413
Greater Than 90 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	28,347	35,238
Greater Than 90 days | North America | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	19,158	21,561
Greater Than 90 days | North America | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	3,620	4,572
Greater Than 90 days | International | Sales-type Lease Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	5,082	8,732
Greater Than 90 days | International | Loan Receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of receivables	$ 487	$ 373