Accounts Receivable and Finance Receivables (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012 item	Dec. 31, 2011
Accounts Receivable and Finance Receivables
Number of loan categories based on key credit quality indicators for individual loan	3
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	$ 1,934	$ 2,477
Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	1,661	1,875
Finance receivables held for investment based on the internally assigned credit quality, percent	85.90%	75.70%
Watchlist
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	130	281
Finance receivables held for investment based on the internally assigned credit quality, percent	6.70%	11.30%
Nonaccrual
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	143	321
Finance receivables held for investment based on the internally assigned credit quality, percent	7.40%	13.00%
Captive
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	1,704	1,945
Captive | Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	1,476	1,558
Captive | Watchlist
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	130	251
Captive | Nonaccrual
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	98	136
Non-captive
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	230	532
Non-captive | Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	185	317
Non-captive | Watchlist
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment		30
Non-captive | Nonaccrual
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	$ 45	$ 185