Fair Value Of Financial Instruments (Summary Of The Fair Value And Carrying Value Of The Company's Financial Instruments) (Details) (USD $) In Thousands	Sep. 25, 2011	Dec. 31, 2010	Sep. 26, 2010	Dec. 31, 2009
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 1,428,753	$ 1,021,933	$ 1,494,301	$ 1,630,433
Marketable securities	179,285	140,118	55,229
Accounts receivable, net	285,332	262,382	306,085
Restricted cash held by variable interest entities	238,208	288,887	287,613
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,428,753		1,494,301
Marketable securities	179,285		55,229
Accounts receivable, net	285,332		306,085
Derivatives, assets	10,343		2,169
Finance receivables, net	6,008,081		6,236,095
Restricted cash held by variable interest entities	238,208		287,613
Accounts payable	289,490		243,840
Derivatives, liabilities	6,834		19,924
Unsecured commercial paper	813,571		697,481
Credit facilities	159,438		207,234
Medium-term notes	2,530,834		2,256,711
Senior unsecured notes	384,110		804,735
Term asset-backed securitization debt	2,015,261		2,596,730
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,428,753		1,494,301
Marketable securities	179,285		55,229
Accounts receivable, net	285,332		306,085
Derivatives, assets	10,343		2,169
Finance receivables, net	5,905,828		6,210,511
Restricted cash held by variable interest entities	238,208		287,613
Accounts payable	289,490		243,840
Derivatives, liabilities	6,834		19,924
Unsecured commercial paper	813,571		697,481
Credit facilities	159,438		207,234
Medium-term notes	2,303,567		2,099,092
Senior unsecured notes	303,000		600,000
Term asset-backed securitization debt	$ 1,995,073		$ 2,533,370