Debt and Credit Facilities (Details) (USD $)	12 Months Ended
	Dec. 29, 2012 Senior Unsecured Revolving Credit Facility	Dec. 29, 2012 Manufacturing group	Dec. 31, 2011 Manufacturing group	Dec. 29, 2012 Manufacturing group 6.50% due 2012	Dec. 31, 2011 Manufacturing group 6.50% due 2012	Dec. 29, 2012 Manufacturing group 3.875% due 2013	Dec. 31, 2011 Manufacturing group 3.875% due 2013	Dec. 29, 2012 Manufacturing group 4.50% convertible senior notes due 2013	Dec. 31, 2011 Manufacturing group 4.50% convertible senior notes due 2013	Dec. 29, 2012 Manufacturing group 6.20% due 2015	Dec. 31, 2011 Manufacturing group 6.20% due 2015	Dec. 29, 2012 Manufacturing group 4.625% due 2016	Dec. 31, 2011 Manufacturing group 4.625% due 2016	Dec. 29, 2012 Manufacturing group 5.60% due 2017	Dec. 31, 2011 Manufacturing group 5.60% due 2017	Dec. 29, 2012 Manufacturing group 7.25% due 2019	Dec. 31, 2011 Manufacturing group 7.25% due 2019	Dec. 29, 2012 Manufacturing group 6.625% due 2020	Dec. 31, 2011 Manufacturing group 6.625% due 2020	Dec. 29, 2012 Manufacturing group 5.95% due 2021	Dec. 31, 2011 Manufacturing group 5.95% due 2021	Dec. 29, 2012 Manufacturing group Other (weighted-average rate of 1.52% and 3.72%, respectively)	Dec. 31, 2011 Manufacturing group Other (weighted-average rate of 1.52% and 3.72%, respectively)	Dec. 29, 2012 Finance group	Dec. 31, 2011 Finance group	Dec. 29, 2012 Finance group Fixed-rate notes due 2013 (weighted-average rate of 5.28%)	Dec. 31, 2011 Finance group Fixed-rate notes due 2013 (weighted-average rate of 5.28%)	Dec. 29, 2012 Finance group Variable-rate note due 2013 (weighted-average rate of 1.21% and 1.41%, respectively)	Dec. 31, 2011 Finance group Variable-rate note due 2013 (weighted-average rate of 1.21% and 1.41%, respectively)	Dec. 29, 2012 Finance group Fixed-rate note due 2014 (5.13%)	Dec. 31, 2011 Finance group Fixed-rate note due 2014 (5.13%)	Dec. 29, 2012 Finance group Fixed-rate notes due 2012-2017 (weighted-average rate of 4.88% and 4.48%, respectively)	Dec. 31, 2011 Finance group Fixed-rate notes due 2012-2017 (weighted-average rate of 4.88% and 4.48%, respectively)	Dec. 29, 2012 Finance group Fixed-rate notes due 2015-2022 (weighted-average rate of 2.70% and 2.76%, respectively)	Dec. 31, 2011 Finance group Fixed-rate notes due 2015-2022 (weighted-average rate of 2.70% and 2.76%, respectively)	Dec. 29, 2012 Finance group Variable-rate notes due 2015-2020 (weighted-average rate of 1.09% and 1.12%, respectively)	Dec. 31, 2011 Finance group Variable-rate notes due 2015-2020 (weighted-average rate of 1.09% and 1.12%, respectively)	Dec. 29, 2012 Finance group Securitized debt (weighted-average rate of 1.55% and 2.08%, respectively)	Dec. 31, 2011 Finance group Securitized debt (weighted-average rate of 1.55% and 2.08%, respectively)	Dec. 29, 2012 Finance group 6% Fixed-to-Floating Rate Junior Subordinated Notes	Dec. 31, 2011 Finance group 6% Fixed-to-Floating Rate Junior Subordinated Notes	Dec. 29, 2012 Finance group Fixed-rate note due 2037 (6.20%)	Dec. 31, 2011 Finance group Fixed-rate note due 2037 (6.20%)	Dec. 29, 2012 Finance group Fair value adjustments and unamortized discount	Dec. 31, 2011 Finance group Fair value adjustments and unamortized discount
Debt Instrument
Debt		$ 2,301,000,000	$ 2,459,000,000																			$ 81,000,000	$ 136,000,000	$ 1,686,000,000	$ 1,974,000,000	$ 400,000,000	$ 400,000,000	$ 48,000,000	$ 100,000,000	$ 100,000,000	$ 100,000,000	$ 102,000,000	$ 147,000,000	$ 382,000,000	$ 364,000,000	$ 64,000,000	$ 62,000,000	$ 282,000,000	$ 469,000,000	$ 300,000,000	$ 300,000,000		$ 10,000,000	$ 8,000,000	$ 22,000,000
Unsecured Debt					139,000,000	318,000,000	308,000,000			350,000,000	350,000,000	250,000,000	250,000,000	350,000,000	350,000,000	250,000,000	250,000,000	242,000,000	231,000,000	250,000,000	250,000,000
4.50% convertible senior notes due 2013								210,000,000	195,000,000
Less: Current portion of long-term debt		(535,000,000)	(146,000,000)
Total Long-term debt		1,766,000,000	2,313,000,000
Interest rate				6.50%	6.50%	3.875%	3.875%	4.50%	4.50%	6.20%	6.20%	4.625%	4.625%	5.60%	5.60%	7.25%	7.25%	6.625%	6.625%	5.95%	5.95%																			6.00%	6.00%
Weighted average interest rate (as a percent)																						1.52%	3.72%			5.28%	5.28%	1.21%	1.41%	5.13%	5.13%	4.88%	4.48%	2.70%	2.76%	1.09%	1.12%	1.55%	2.08%			6.20%	6.20%
Facility agreement expires	Mar. 31, 2015
Senior unsecured revolving credit facility	1,000,000,000
Portion available for issuance of letters of credit against facility	200,000,000
Letters of credit issued against credit facility	$ 37,000,000