Borrowings (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 30, 2012		Jan. 01, 2012
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 11,489		$ 12,969
Debt Instrument, Interest Rate, Effective Percentage	4.14%	[1]	4.08%	[1]
5.15% Debentures due 2012
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	0		599
Debt Instrument, Interest Rate, Effective Percentage	0.00%		5.18%
0.70% Notes due 2013]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	500		500
Debt Instrument, Interest Rate, Effective Percentage	0.75%		0.75%
3.80% Debentures due 2013
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	500		500
Debt Instrument, Interest Rate, Effective Percentage	3.82%		3.82%
3 month LIBOR due 2013
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	500		500
Debt Instrument, Interest Rate, Effective Percentage	0.31%		0.46%
3 month LIBOR due 2014
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	750		750
Debt Instrument, Interest Rate, Effective Percentage	0.40%		0.55%
1.20% Notes due 2014
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	999		999
Debt Instrument, Interest Rate, Effective Percentage	1.24%		1.24%
2.15% Notes due 2016
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	898		898
Debt Instrument, Interest Rate, Effective Percentage	2.22%		2.22%
5.55% Debentures due 2017
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	1,000		1,000
Debt Instrument, Interest Rate, Effective Percentage	5.55%		5.55%
5.15% Debentures due 2018
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	898		898
Debt Instrument, Interest Rate, Effective Percentage	5.15%		5.15%
4.75% Notes due 2019
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	1,321	[2]	1,282	[3]
Debt Instrument, Interest Rate, Effective Percentage	5.83%		5.35%
3% Zero Coupon Convertible Subordinated Debentures due 2020
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	205		199
Debt Instrument, Interest Rate, Effective Percentage	3.00%		3.00%
2.95% Debentures due 2020
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	542		541
Debt Instrument, Interest Rate, Effective Percentage	3.15%		3.15%
3.55% Notes due 2021
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	446		446
Debt Instrument, Interest Rate, Effective Percentage	3.67%		3.67%
6.73% Debentures due 2023
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	250		250
Debt Instrument, Interest Rate, Effective Percentage	6.73%		6.73%
5.50% Notes due 2024
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	803	[2]	765	[3]
Debt Instrument, Interest Rate, Effective Percentage	6.75%		5.71%
6.95% Notes due 2029
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	296		294
Debt Instrument, Interest Rate, Effective Percentage	7.14%		7.14%
4.95% Debentures due 2033
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	500		500
Debt Instrument, Interest Rate, Effective Percentage	4.95%		4.95%
5.95% Notes due 2037
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	995		995
Debt Instrument, Interest Rate, Effective Percentage	5.99%		5.99%
5.85% Debentures due 2038
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	700		700
Debt Instrument, Interest Rate, Effective Percentage	5.86%		5.86%
4.50% Debentures due 2040
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	539		539
Debt Instrument, Interest Rate, Effective Percentage	4.63%		4.63%
4.85% Notes due 2041
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	298		298
Debt Instrument, Interest Rate, Effective Percentage	4.89%		4.89%
Other
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	61		132
Debt Instrument, Interest Rate, Effective Percentage	0.00%		0.00%
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	11,489		12,969
Long-term Debt, Current Maturities	1,512		616
Long-term Debt	$ 13,001	[4]	$ 13,585	[4]

[1] Weighted average effective rate.

[2] Translation rate at December 30, 2012.

[3] Translation rate at January 1, 2012.

[4] The excess of the fair value over the carrying value of debt was $2.2 billion in 2012 and $2.0 billion in 2011.