Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 1,068,138	$ 1,526,950
Marketable securities	135,634	153,380
Accounts receivable, net	230,079	219,039
Finance receivables, net	1,743,045	1,760,467
Inventories	393,524	418,006
Restricted Cash and Cash Equivalents	188,008	229,655
Deferred income taxes	110,853	132,331
Other current assets	181,655	102,378
Total current assets	4,050,936	4,542,206
Finance receivables, net	4,038,807	4,026,214
Property, plant and equipment, net	815,464	809,459
Goodwill	29,530	29,081
Deferred income taxes	171,845	202,439
Other long-term assets	64,191	64,765
Total assets	9,170,773	9,674,164
Current liabilities:
Accounts payable	257,386	255,713
Accrued liabilities	513,591	564,172
Short-term debt	294,943	838,486
Current portion of long-term debt	437,162	1,040,247
Total current liabilities	1,503,082	2,698,618
Long-term debt	4,370,544	3,843,886
Pension liability	330,294	302,483
Postretirement healthcare liability	278,062	268,582
Other long-term liabilities	131,167	140,339
Commitments and contingencies (Note 17)
Shareholders' equity:
Series A Junior participating preferred stock, none issued	0	0
Common stock, 341,265,838 and 339,107,230 shares issued in 2012 and 2011, respectively	3,413	3,391
Additional paid-in-capital	1,066,069	968,392
Retained earnings	7,306,424	6,824,180
Accumulated other comprehensive loss	(607,678)	(476,733)
Stockholders equity before treasury stock	7,768,228	7,319,230
Less: Treasury stock (115,165,744 and 108,566,699 shares in 2012 and 2011, respectively), at cost	(5,210,604)	(4,898,974)
Total shareholders' equity	2,557,624	2,420,256
Total liabilities and shareholders' equity	9,170,773	9,674,164
Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Finance receivables, net	470,134	591,864
Restricted Cash and Cash Equivalents	176,290	229,655
Other current assets	5,288	7,221
Finance receivables, net	1,631,435	2,271,773
Current liabilities:
Current portion of long-term debt	399,477	640,331
Long-term debt	$ 1,048,299	$ 1,447,015