Fair Value Measurements (Details 2) (Details) - USD ($) $ in Millions	Sep. 27, 2015	Dec. 28, 2014
Financial Liabilities
Current Debt	$ 5,677	$ 3,638
Non-Current Debt
Non-Current Debt	14,073	$ 15,122
Carrying Amount
Financial Liabilities
Current Debt	5,677
Non-Current Debt
Non-Current Debt	14,073
Estimate of Fair Value, Fair Value Disclosure
Financial Liabilities
Current Debt	5,677
Non-Current Debt
Non-Current Debt	15,779
3 month LIBOR0.07% FRN due 2016 \| Carrying Amount
Non-Current Debt
Non-Current Debt	800
3 month LIBOR0.07% FRN due 2016 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	800
0.70% Notes due 2016 \| Carrying Amount
Non-Current Debt
Non-Current Debt	399
0.70% Notes due 2016 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	400
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	1,084
1.125% Notes due 2017 \| Carrying Amount
Non-Current Debt
Non-Current Debt	706
1.125% Notes due 2017 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	710
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	995
1.65% Notes due 2018 \| Carrying Amount
Non-Current Debt
Non-Current Debt	609
1.65% Notes due 2018 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	616
4.75% Notes due 2019 (1B Euro 1.1267) \| Carrying Amount
Non-Current Debt
Non-Current Debt	1,123
4.75% Notes due 2019 (1B Euro 1.1267) \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	1,322
1.875% Notes due 2019 \| Carrying Amount
Non-Current Debt
Non-Current Debt	510
1.875% Notes due 2019 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	517
3% Zero Coupon Convertible Subordinated Debentures due in 2020 \| Carrying Amount
Non-Current Debt
Non-Current Debt	140
3% Zero Coupon Convertible Subordinated Debentures due in 2020 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	181
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	585
3.55% Notes due 2021 \| Carrying Amount
Non-Current Debt
Non-Current Debt	448
3.55% Notes due 2021 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	487
2.45% Notes due 2021 \| Carrying Amount
Non-Current Debt
Non-Current Debt	350
2.45% Notes due 2021 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	357
6.73% Debentures due 2023 \| Carrying Amount
Non-Current Debt
Non-Current Debt	250
6.73% Debentures due 2023 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	326
3.375% Notes due 2023 \| Carrying Amount
Non-Current Debt
Non-Current Debt	811
3.375% Notes due 2023 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	856
5.50% Notes due 2024 (500 MM GBP 1.5215) \| Carrying Amount
Non-Current Debt
Non-Current Debt	756
5.50% Notes due 2024 (500 MM GBP 1.5215) \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	940
6.95% Notes due 2029 \| Carrying Amount
Non-Current Debt
Non-Current Debt	297
6.95% Notes due 2029 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	426
4.95% Debentures due 2033 \| Carrying Amount
Non-Current Debt
Non-Current Debt	500
4.95% Debentures due 2033 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	571
4.375% Notes due 2033 \| Carrying Amount
Non-Current Debt
Non-Current Debt	864
4.375% Notes due 2033 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	932
5.95% Notes due 2037 \| Carrying Amount
Non-Current Debt
Non-Current Debt	996
5.95% Notes due 2037 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	1,275
5.85% Debentures due 2038 \| Carrying Amount
Non-Current Debt
Non-Current Debt	700
5.85% Debentures due 2038 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	898
4.50% Debentures due 2040 \| Carrying Amount
Non-Current Debt
Non-Current Debt	541
4.50% Debentures due 2040 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	585
4.85% Notes due 2041 \| Carrying Amount
Non-Current Debt
Non-Current Debt	298
4.85% Notes due 2041 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	345
4.50% Notes due 2043 \| Carrying Amount
Non-Current Debt
Non-Current Debt	499
4.50% Notes due 2043 \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	539
Other \| Carrying Amount
Non-Current Debt
Non-Current Debt	32
Other \| Estimate of Fair Value, Fair Value Disclosure
Non-Current Debt
Non-Current Debt	$ 32