Finance Assets (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Finance Leases And Loans Receivables [Line Items]
Document Period End Date	Jun. 30, 2013
Sales-type Lease Receivables
Gross finance receivables	$ 1,922,204		$ 2,043,221
Unguaranteed residual values	153,019		169,689
Unearned income	(399,609)		(420,288)
Allowance for credit losses	(22,782)		(25,641)
Net investment in sales-type lease receivables	1,652,832		1,766,981
Loan Receivables
Loan receivable	443,661		462,253
Allowance for credit losses	(13,319)		(14,453)
Loans Receivable, Net	430,342		447,800
Allowance for Loan and Lease Losses [Roll Forward]
Balance Beginning	40,094	63,430
Amounts charged to expense	8,955	3,047
Accounts written off	(12,948)	(14,736)
Balance Closing	36,101	51,741
Financing Receivable, Recorded Investment, Aging [Abstract]
Less than 31 days past due	2,243,064		2,371,009
Greater than 30 days and Less than 61 days	51,443		61,376
Greater than 60 days and Less than 91 days	29,573		34,119
Greater than 90 days and Less than 121 days	12,426		12,490
Greater than 120 days	29,359		26,480
Notes, Loans and Financing Receivable, Gross	2,365,865		2,505,474
Still accruing interest	10,469		9,992
Not accruing interest	31,316		28,978
TOTAL	41,785		38,970
Loans and Leases Receivable, Net Reported Amount	2,083,174		2,214,781
Risk Level, Low [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Approximate percentage of portfolio	30.00%
Risk Level, Medium [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Approximate percentage of portfolio	40.00%
Risk Level, High [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Approximate percentage of portfolio	30.00%
North America [Member]
Sales-type Lease Receivables
Net investment in sales-type lease receivables	1,309,498		1,397,366
Loan Receivables
Loans Receivable, Net	383,733		402,638
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans and Leases Receivable, Net Reported Amount	1,693,231		1,800,004
International [Member]
Sales-type Lease Receivables
Net investment in sales-type lease receivables	343,334		369,615
Loan Receivables
Loans Receivable, Net	46,609		45,162
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans and Leases Receivable, Net Reported Amount	389,943		414,777
Sales-type Lease Receivables [Member]
Sales-type Lease Receivables
Gross finance receivables	1,494,818		1,581,711
Sales-type Lease Receivables [Member] | Risk Level, Low [Member]
Sales-type Lease Receivables
Gross finance receivables	1,145,454		1,016,413
Sales-type Lease Receivables [Member] | Risk Level, Medium [Member]
Sales-type Lease Receivables
Gross finance receivables	235,243		450,432
Sales-type Lease Receivables [Member] | Risk Level, High [Member]
Sales-type Lease Receivables
Gross finance receivables	59,112		43,658
Sales-type Lease Receivables [Member] | Not Scored [Member]
Sales-type Lease Receivables
Gross finance receivables	55,009		71,208
Sales-type Lease Receivables [Member] | North America [Member]
Sales-type Lease Receivables
Gross finance receivables	1,494,818		1,581,711
Unguaranteed residual values	132,817		148,664
Unearned income	(302,533)		(316,030)
Allowance for credit losses	(15,604)		(16,979)
Allowance for Loan and Lease Losses [Roll Forward]
Balance Beginning	16,979	28,661
Amounts charged to expense	3,022	288
Accounts written off	(4,397)	(5,068)
Balance Closing	15,604	23,881
Financing Receivable, Recorded Investment, Aging [Abstract]
Less than 31 days past due	1,421,203		1,497,797
Greater than 30 days and Less than 61 days	31,153		37,348
Greater than 60 days and Less than 91 days	20,903		24,059
Greater than 90 days and Less than 121 days	6,159		6,665
Greater than 120 days	15,400		15,842
Still accruing interest	6,159		6,665
Not accruing interest	15,400		15,842
TOTAL	21,559		22,507
Sales-type Lease Receivables [Member] | International [Member]
Sales-type Lease Receivables
Gross finance receivables	427,386		461,510
Unguaranteed residual values	20,202		21,025
Unearned income	(97,076)		(104,258)
Allowance for credit losses	(7,178)		(8,662)
Allowance for Loan and Lease Losses [Roll Forward]
Balance Beginning	8,662	12,039
Amounts charged to expense	784	53
Accounts written off	(2,268)	(3,051)
Balance Closing	7,178	9,041
Financing Receivable, Recorded Investment, Aging [Abstract]
Less than 31 days past due	398,398		435,780
Greater than 30 days and Less than 61 days	8,074		9,994
Greater than 60 days and Less than 91 days	5,304		5,198
Greater than 90 days and Less than 121 days	4,310		3,327
Greater than 120 days	11,300		7,211
Still accruing interest	4,310		3,327
Not accruing interest	11,300		7,211
TOTAL	15,610		10,538
Loan Receivables [Member]
Loan Receivables
Loan receivable	395,292		414,960
Loan Receivables [Member] | Risk Level, Low [Member]
Loan Receivables
Loan receivable	287,172		254,567
Loan Receivables [Member] | Risk Level, Medium [Member]
Loan Receivables
Loan receivable	90,956		136,069
Loan Receivables [Member] | Risk Level, High [Member]
Loan Receivables
Loan receivable	12,426		14,624
Loan Receivables [Member] | Not Scored [Member]
Loan Receivables
Loan receivable	4,738		9,700
Loan Receivables [Member] | North America [Member]
Loan Receivables
Loan receivable	395,292		414,960
Allowance for credit losses	(11,559)		(12,322)
Allowance for Loan and Lease Losses [Roll Forward]
Balance Beginning	12,322	20,272
Amounts charged to expense	4,625	2,284
Accounts written off	(5,388)	(6,026)
Balance Closing	11,559	16,530
Financing Receivable, Recorded Investment, Aging [Abstract]
Less than 31 days past due	377,122		392,108
Greater than 30 days and Less than 61 days	10,826		12,666
Greater than 60 days and Less than 91 days	3,071		4,577
Greater than 90 days and Less than 121 days	1,760		2,319
Greater than 120 days	2,513		3,290
Still accruing interest	0		0
Not accruing interest	4,273		5,609
TOTAL	4,273		5,609
Loan Receivables [Member] | International [Member]
Loan Receivables
Loan receivable	48,369		47,293
Allowance for credit losses	(1,760)		(2,131)
Allowance for Loan and Lease Losses [Roll Forward]
Balance Beginning	2,131	2,458
Amounts charged to expense	524	422
Accounts written off	(895)	(591)
Balance Closing	1,760	2,289
Financing Receivable, Recorded Investment, Aging [Abstract]
Less than 31 days past due	46,341		45,324
Greater than 30 days and Less than 61 days	1,390		1,368
Greater than 60 days and Less than 91 days	295		285
Greater than 90 days and Less than 121 days	197		179
Greater than 120 days	146		137
Still accruing interest	0		0
Not accruing interest	343		316
TOTAL	$ 343		$ 316