Fair Value Of Financial Instruments (Summary Of Fair Value And Carrying Value Of Company Financial Instruments) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 25, 2011	Dec. 31, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 1,795,141	$ 1,526,950	$ 1,428,753	$ 1,021,933
Marketable securities	136,376	153,380	179,285
Accounts receivable, net	256,193	219,039	285,332
Restricted cash held by variable interest entities	217,400	229,655	238,208
Derivatives	2,458	5,136	6,834
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,795,141	1,526,950	1,428,753
Marketable securities	136,376	153,380	179,285
Accounts receivable, net	256,193	219,039	285,332
Derivatives	1,639	16,443	10,343
Finance receivables, net	5,993,713	5,888,040	6,008,081
Restricted cash held by variable interest entities	217,400	229,655	238,208
Accounts payable	293,710	255,713	289,490
Derivatives	2,458	5,136	6,834
Unsecured commercial paper	404,693	874,286	813,571
Credit facilities	0	159,794	159,438
Medium-term notes	3,623,082	2,561,458	2,530,834
Senior unsecured notes	357,328	376,513	384,110
Term asset-backed securitization debt	1,702,320	2,099,060	2,015,261
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,795,141	1,526,950	1,428,753
Marketable securities	136,376	153,380	179,285
Accounts receivable, net	256,193	219,039	285,332
Derivatives	1,639	16,443	10,343
Finance receivables, net	5,915,667	5,786,681	5,905,828
Restricted cash held by variable interest entities	217,400	229,655	238,208
Accounts payable	293,710	255,713	289,490
Derivatives	2,458	5,136	6,834
Unsecured commercial paper	404,693	874,286	813,571
Credit facilities	0	159,794	159,438
Medium-term notes	3,297,687	2,298,193	2,303,567
Senior unsecured notes	303,000	303,000	303,000
Term asset-backed securitization debt	$ 1,692,065	$ 2,087,346	$ 1,995,073