Debt Obligations and Commitments (Schedule of Long and Short-Term Debt Contractual Commitments) (Details) (USD $) In Millions, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012
Debt Instrument [Line Items]
Commercial paper (0.1% and 0.1%)	$ 2,924	$ 1,101
Short-term debt obligations	5,306	4,815
Long-term debt obligations, gross	26,557	26,445
Total	24,333	23,544
Current Maturities Of Long-Term Debt
Debt Instrument [Line Items]
Current maturities of long-term debt	2,224	2,901
Less: current maturities of long-term debt obligations	(2,224)	(2,901)
Commercial Paper (0.1% And 0.1%)
Debt Instrument [Line Items]
Interest rate on debt	0.10%	0.10%
Other Borrowings (7.4% And 7.6%)
Debt Instrument [Line Items]
Other borrowings (7.4% and 7.6%)	158	813
Interest rate on debt	12.40%	7.40%
Notes Due 2013 (2.3% And 2.3%)
Debt Instrument [Line Items]
Notes due	0	2,891
Interest rate on debt	2.30%	2.30%
Notes Due 2014
Debt Instrument [Line Items]
Notes due	2,219	3,237
Interest rate on debt	5.30%	4.40%
Notes Due 2015
Debt Instrument [Line Items]
Notes due	4,116	3,300
Interest rate on debt	1.20%	1.50%
Notes Due 2016
Debt Instrument [Line Items]
Notes due	3,106	1,878
Interest rate on debt	2.50%	3.90%
Notes Due 2017
Debt Instrument [Line Items]
Notes due	1,258	1,250
Interest rate on debt	2.00%	2.00%
Notes Due 2018
Debt Instrument [Line Items]
Notes due	3,439	3,511
Interest rate on debt	4.30%	4.70%
Notes Due 2019 to 2042
Debt Instrument [Line Items]
Notes due	12,373	10,270
Interest rate on debt	4.00%	4.40%
Other Debt Instruments due 2014 to 2020
Debt Instrument [Line Items]
Other notes due	$ 46	$ 108
Interest rate on debt	4.40%	9.30%