Accounts Receivable and Finance Receivables (Details 7) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Finance receivables
Leveraged leases	$ 122	$ 208
Individually evaluated for impairment	171	383
Collectively evaluated for impairment	1,641	1,886
Total Allowance Based on Individual Evaluation	27	87
Total Allowance Based on Collective Evaluation	57	69
Captive
Finance receivables
Individually evaluated for impairment	127	141
Collectively evaluated for impairment	1,577	1,804
Total Allowance Based on Individual Evaluation	15	40
Total Allowance Based on Collective Evaluation	55	61
Non-captive
Finance receivables
Individually evaluated for impairment	44	242
Collectively evaluated for impairment	64	82
Total Allowance Based on Individual Evaluation	12	47
Total Allowance Based on Collective Evaluation	$ 2	$ 8