Fair Value Measurements (Details 2) (Details) - USD ($) $ in Millions	Apr. 03, 2016	Jan. 03, 2016
Financial Liabilities
Current Debt	$ 3,116	$ 7,004
Non-Current Debt
Non-Current Debt	20,233	$ 12,857
Carrying Amount
Financial Liabilities
Current Debt	3,116
Non-Current Debt
Non-Current Debt	20,233
Estimate of Fair Value, Fair Value Disclosure
Financial Liabilities
Current Debt	3,116
Non-Current Debt
Non-Current Debt	22,546
5.55% Debentures due 2017 | Carrying Amount
Non-Current Debt
Non-Current Debt	1,000
5.55% Debentures due 2017 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	1,063
1.125% Notes due 2017 | Carrying Amount
Non-Current Debt
Non-Current Debt	705
1.125% Notes due 2017 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	709
5.15% Debentures due 2018 | Carrying Amount
Non-Current Debt
Non-Current Debt	899
5.15% Debentures due 2018 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	976
1.65% Notes due 2018 | Carrying Amount
Non-Current Debt
Non-Current Debt	610
1.65% Notes due 2018 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	621
4.75% Notes due 2019 (1B Euro 1.1395) | Carrying Amount
Non-Current Debt
Non-Current Debt	1,134
4.75% Notes due 2019 (1B Euro 1.1395) | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	1,327
1.875% Notes due 2019 | Carrying Amount
Non-Current Debt
Non-Current Debt	513
1.875% Notes due 2019 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	527
0.89% Notes due 2019 | Carrying Amount
Non-Current Debt
Non-Current Debt	299
0.89% Notes due 2019 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	300
1.125% Notes due 2019 | Carrying Amount
Non-Current Debt
Non-Current Debt	698
1.125% Notes due 2019 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	700
3% Zero Coupon Convertible Subordinated Debentures due in 2020 | Carrying Amount
Non-Current Debt
Non-Current Debt	128
3% Zero Coupon Convertible Subordinated Debentures due in 2020 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	193
2.95% Debentures due 2020 | Carrying Amount
Non-Current Debt
Non-Current Debt	545
2.95% Debentures due 2020 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	581
3.55% Notes due 2021 | Carrying Amount
Non-Current Debt
Non-Current Debt	447
3.55% Notes due 2021 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	497
2.45% Notes due 2021 | Carrying Amount
Non-Current Debt
Non-Current Debt	348
2.45% Notes due 2021 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	369
1.65% Notes due 2021 | Carrying Amount
Non-Current Debt
Non-Current Debt	997
1.65% Notes due 2021 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	1,016
6.73% Debentures due 2023 | Carrying Amount
Non-Current Debt
Non-Current Debt	249
6.73% Debentures due 2023 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	321
3.375% Notes due 2023 | Carrying Amount
Non-Current Debt
Non-Current Debt	808
3.375% Notes due 2023 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	891
2.05% Notes due 2023 | Carrying Amount
Non-Current Debt
Non-Current Debt	497
2.05% Notes due 2023 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	502
5.50% Notes due 2024 (500 MM GBP 1.4373) | Carrying Amount
Non-Current Debt
Non-Current Debt	711
5.50% Notes due 2024 (500 MM GBP 1.4373) | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	912
2.45% Notes due 2026 | Carrying Amount
Non-Current Debt
Non-Current Debt	1,988
2.45% Notes due 2026 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	2,003
6.95% Notes due 2029 | Carrying Amount
Non-Current Debt
Non-Current Debt	296
6.95% Notes due 2029 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	432
4.95% Debentures due 2033 | Carrying Amount
Non-Current Debt
Non-Current Debt	497
4.95% Debentures due 2033 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	613
4.375% Notes due 2033 | Carrying Amount
Non-Current Debt
Non-Current Debt	857
4.375% Notes due 2033 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	986
3.55% Notes due 2036 | Carrying Amount
Non-Current Debt
Non-Current Debt	986
3.55% Notes due 2036 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	1,034
5.95% Notes due 2037 | Carrying Amount
Non-Current Debt
Non-Current Debt	990
5.95% Notes due 2037 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	1,334
5.85% Debentures due 2038 | Carrying Amount
Non-Current Debt
Non-Current Debt	695
5.85% Debentures due 2038 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	946
4.50% Debentures due 2040 | Carrying Amount
Non-Current Debt
Non-Current Debt	537
4.50% Debentures due 2040 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	622
4.85% Notes due 2041 | Carrying Amount
Non-Current Debt
Non-Current Debt	296
4.85% Notes due 2041 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	365
4.50% Notes due 2043 | Carrying Amount
Non-Current Debt
Non-Current Debt	495
4.50% Notes due 2043 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	577
3.70% Notes due 2046 | Carrying Amount
Non-Current Debt
Non-Current Debt	1,969
3.70% Notes due 2046 | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	2,090
Other | Carrying Amount
Non-Current Debt
Non-Current Debt	39
Other | Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	$ 39