Finance Assets (Details) (USD $)	9 Months Ended			9 Months Ended							9 Months Ended		9 Months Ended											9 Months Ended			9 Months Ended		9 Months Ended											9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Low	Sep. 30, 2014 Medium	Sep. 30, 2014 High	Sep. 30, 2014 North America	Dec. 31, 2013 North America	Sep. 30, 2014 International	Dec. 31, 2013 International	Sep. 30, 2014 Sales-type lease receivables	Dec. 31, 2013 Sales-type lease receivables	Sep. 30, 2014 Sales-type lease receivables North America	Sep. 30, 2013 Sales-type lease receivables North America	Dec. 31, 2013 Sales-type lease receivables North America	Sep. 30, 2014 Sales-type lease receivables North America Low	Dec. 31, 2013 Sales-type lease receivables North America Low	Sep. 30, 2014 Sales-type lease receivables North America Medium	Dec. 31, 2013 Sales-type lease receivables North America Medium	Sep. 30, 2014 Sales-type lease receivables North America High	Dec. 31, 2013 Sales-type lease receivables North America High	Sep. 30, 2014 Sales-type lease receivables North America Not Scored	Dec. 31, 2013 Sales-type lease receivables North America Not Scored	Sep. 30, 2014 Sales-type lease receivables International	Sep. 30, 2013 Sales-type lease receivables International	Dec. 31, 2013 Sales-type lease receivables International	Sep. 30, 2014 Loan receivables	Dec. 31, 2013 Loan receivables	Sep. 30, 2014 Loan receivables North America	Sep. 30, 2013 Loan receivables North America	Dec. 31, 2013 Loan receivables North America	Sep. 30, 2014 Loan receivables North America Low	Dec. 31, 2013 Loan receivables North America Low	Sep. 30, 2014 Loan receivables North America Medium	Dec. 31, 2013 Loan receivables North America Medium	Sep. 30, 2014 Loan receivables North America High	Dec. 31, 2013 Loan receivables North America High	Sep. 30, 2014 Loan receivables North America Not Scored	Dec. 31, 2013 Loan receivables North America Not Scored	Sep. 30, 2014 Loan receivables International	Sep. 30, 2013 Loan receivables International	Dec. 31, 2013 Loan receivables International	Apr. 30, 2014 DIS
Sales-type lease receivables
Gross finance receivables											$ 1,676,349,000	$ 1,913,179,000	$ 1,291,312,000		$ 1,456,420,000	$ 976,711,000	$ 1,081,853,000	$ 212,695,000	$ 244,379,000	$ 45,206,000	$ 51,851,000	$ 56,700,000	$ 78,337,000	$ 385,037,000		$ 456,759,000
Unguaranteed residual values											126,264,000	142,892,000	106,940,000		121,339,000									19,324,000		21,553,000
Unearned income											(359,989,000)	(400,707,000)	(272,035,000)		(299,396,000)									(87,954,000)		(101,311,000)
Allowance for credit losses											(18,392,000)	(23,868,000)	(12,906,000)		(14,165,000)									(5,486,000)		(9,703,000)
Net investment in sales-type lease receivables											1,424,232,000	1,631,496,000	1,113,311,000		1,264,198,000									310,921,000		367,298,000
Finance receivables																																											62,000,000
Loans and Leases Receivable, Net Amount [Abstract]
Loan receivables																											437,444,000	446,869,000	385,919,000		397,815,000	267,394,000	279,607,000	92,497,000	95,524,000	11,565,000	11,511,000	14,463,000	11,173,000	51,525,000		49,054,000
Allowance for credit losses																											(12,845,000)	(13,081,000)	(10,944,000)		(11,165,000)									(1,901,000)		(1,916,000)
Net investment in loan receivables																											424,599,000	433,788,000	374,975,000		386,650,000									49,624,000		47,138,000
Net investment in finance receivables	1,848,831,000		2,065,284,000				1,488,286,000	1,650,848,000	360,545,000	414,436,000
Allowance for Loan and Lease Losses [Roll Forward]
Balance Beginning	36,949,000	40,094,000											14,165,000	16,979,000										9,703,000	8,662,000				11,165,000	12,322,000										1,916,000	2,131,000
Amounts charged to expense	12,392,000	14,706,000											3,232,000	4,617,000										35,000	2,031,000				7,759,000	7,265,000										1,366,000	793,000
Write-offs and other	(18,104,000)	(18,304,000)											(4,491,000)	(6,270,000)										(4,252,000)	(2,870,000)				(7,980,000)	(8,089,000)										(1,381,000)	(1,075,000)
Balance Closing	31,237,000	36,496,000											12,906,000	15,326,000										5,486,000	7,823,000				10,944,000	11,498,000										1,901,000	1,849,000
Financing Receivable, Recorded Investment, Aging [Abstract]
1 to 30 days	2,006,990,000		2,231,251,000										1,226,023,000		1,383,253,000									362,131,000		425,923,000			369,148,000		379,502,000									49,688,000		42,573,000
31 to 60 days	42,052,000		58,717,000										25,851,000		32,102,000									6,045,000		11,760,000			9,079,000		10,464,000									1,077,000		4,391,000
61 to 90 days	25,558,000		31,247,000										16,857,000		20,830,000									4,866,000		5,724,000			3,410,000		3,330,000									425,000		1,363,000
Sales-type Lease Receivables - Total											1,676,349,000	1,913,179,000	1,291,312,000		1,456,420,000	976,711,000	1,081,853,000	212,695,000	244,379,000	45,206,000	51,851,000	56,700,000	78,337,000	385,037,000		456,759,000
Total	2,113,793,000		2,360,048,000																												397,815,000											49,054,000
Still accruing interest	9,042,000		10,392,000										5,541,000		6,413,000									3,501,000		3,979,000			0		0									0		0
Not accruing interest	30,151,000		28,441,000										17,040,000		13,822,000									8,494,000		9,373,000			4,282,000		4,519,000									335,000		727,000
Total	$ 39,193,000		$ 38,833,000										$ 22,581,000		$ 20,235,000									$ 11,995,000		$ 13,352,000			$ 4,282,000		$ 4,519,000									$ 335,000		$ 727,000
Revenue recognition discontinuation period											120 days																90 days
Revenue recognition resume period	60 days
Approximate percentage of portfolio				30.00%	40.00%	30.00%