Fair Value Measurements (Details 2) (USD $) In Millions, unless otherwise specified	Jul. 01, 2012	Jan. 01, 2012
Financial Liabilities
Current Debt	$ 6,040	$ 6,658
Non-Current Debt
Long-term debt	11,525	12,969
Carrying Amount [Member]
Current Investments
Cash	3,459
Government securities and obligations	10,857
Corporate debt securities	529
Money market funds	1,620
Time deposits	450
Total cash, cash equivalents and current marketable securities	16,915
Financial Liabilities
Current Debt	6,040
Non-Current Debt
Long-term debt	11,525
Carrying Amount [Member] | 3 month LIBOR+0.09% FRN due 2014 [Member]
Non-Current Debt
Long-term debt	750
Carrying Amount [Member] | 1.20% notes due 2014 [Member]
Non-Current Debt
Long-term debt	999
Carrying Amount [Member] | 2.15% Notes due 2016 [Member]
Non-Current Debt
Long-term debt	898
Carrying Amount [Member] | 5.55% Debentures due 2017 [Member]
Non-Current Debt
Long-term debt	1,000
Carrying Amount [Member] | 5.15% Debentures due 2018 [Member]
Non-Current Debt
Long-term debt	898
Carrying Amount [Member] | 4.75% Notes due 2019 (1B Euro 1.2434) [Member]
Non-Current Debt
Long-term debt	1,237
Carrying Amount [Member] | 3% Zero Coupon Convertible Subordinated Debentures due in 2020 [Member]
Non-Current Debt
Long-term debt	203
Carrying Amount [Member] | 2.95% Debentures due 2020 [Member]
Non-Current Debt
Long-term debt	541
Carrying Amount [Member] | 3.55% Notes due 2021 [Member]
Non-Current Debt
Long-term debt	446
Carrying Amount [Member] | 6.73% Debentures due 2023 [Member]
Non-Current Debt
Long-term debt	250
Carrying Amount [Member] | 5.50% Notes due 2024 (500 GBP 1.5539) [Member]
Non-Current Debt
Long-term debt	772
Carrying Amount [Member] | 6.95% Notes due 2029 [Member]
Non-Current Debt
Long-term debt	294
Carrying Amount [Member] | 4.95% Debentures due 2033 [Member]
Non-Current Debt
Long-term debt	500
Carrying Amount [Member] | 5.95% Notes due 2037 [Member]
Non-Current Debt
Long-term debt	995
Carrying Amount [Member] | 5.85% Debentures due 2038 [Member]
Non-Current Debt
Long-term debt	700
Carrying Amount [Member] | 4.50% Debentures due 2040 [Member]
Non-Current Debt
Long-term debt	539
Carrying Amount [Member] | 4.85% Notes due 2041 [Member]
Non-Current Debt
Long-term debt	298
Carrying Amount [Member] | Other (Includes Industrial Revenue Bonds) [Member]
Non-Current Debt
Long-term debt	205
Estimated Fair Value [Member]
Current Investments
Cash	3,459
Government securities and obligations	10,857
Corporate debt securities	529
Money market funds	1,620
Time deposits	450
Total cash, cash equivalents and current marketable securities	16,915
Financial Liabilities
Current Debt	6,040
Non-Current Debt
Long-term debt	13,699
Estimated Fair Value [Member] | 3 month LIBOR+0.09% FRN due 2014 [Member]
Non-Current Debt
Long-term debt	750
Estimated Fair Value [Member] | 1.20% notes due 2014 [Member]
Non-Current Debt
Long-term debt	1,014
Estimated Fair Value [Member] | 2.15% Notes due 2016 [Member]
Non-Current Debt
Long-term debt	950
Estimated Fair Value [Member] | 5.55% Debentures due 2017 [Member]
Non-Current Debt
Long-term debt	1,223
Estimated Fair Value [Member] | 5.15% Debentures due 2018 [Member]
Non-Current Debt
Long-term debt	1,091
Estimated Fair Value [Member] | 4.75% Notes due 2019 (1B Euro 1.2434) [Member]
Non-Current Debt
Long-term debt	1,475
Estimated Fair Value [Member] | 3% Zero Coupon Convertible Subordinated Debentures due in 2020 [Member]
Non-Current Debt
Long-term debt	194
Estimated Fair Value [Member] | 2.95% Debentures due 2020 [Member]
Non-Current Debt
Long-term debt	576
Estimated Fair Value [Member] | 3.55% Notes due 2021 [Member]
Non-Current Debt
Long-term debt	503
Estimated Fair Value [Member] | 6.73% Debentures due 2023 [Member]
Non-Current Debt
Long-term debt	345
Estimated Fair Value [Member] | 5.50% Notes due 2024 (500 GBP 1.5539) [Member]
Non-Current Debt
Long-term debt	993
Estimated Fair Value [Member] | 6.95% Notes due 2029 [Member]
Non-Current Debt
Long-term debt	436
Estimated Fair Value [Member] | 4.95% Debentures due 2033 [Member]
Non-Current Debt
Long-term debt	597
Estimated Fair Value [Member] | 5.95% Notes due 2037 [Member]
Non-Current Debt
Long-term debt	1,391
Estimated Fair Value [Member] | 5.85% Debentures due 2038 [Member]
Non-Current Debt
Long-term debt	958
Estimated Fair Value [Member] | 4.50% Debentures due 2040 [Member]
Non-Current Debt
Long-term debt	631
Estimated Fair Value [Member] | 4.85% Notes due 2041 [Member]
Non-Current Debt
Long-term debt	370
Estimated Fair Value [Member] | Other (Includes Industrial Revenue Bonds) [Member]
Non-Current Debt
Long-term debt	$ 202