Borrowings - Schedule of Long-term Debt Instruments (Details) € in Millions, $ in Millions, £ in Billions	12 Months Ended
	Jan. 01, 2017 USD ($)	Jan. 03, 2016 USD ($)	Jan. 01, 2017 GBP (£)	Jan. 01, 2017 EUR (€)	Jan. 03, 2016 GBP (£)	Jan. 03, 2016 EUR (€)
Debt Instrument [Line Items]
Effective interest rate	3.33%	4.06%	3.33%	3.33%	4.06%	4.06%
Total long-term debt	$ 22,442	$ 12,857
Carrying (Reported) Amount, Fair Value Disclosure
Debt Instrument [Line Items]
Long-term Debt	24,146	14,961
Less current portion	1,704	2,104
Total long-term debt	$ 22,442	$ 12,857
2.15% Notes due 2016
Debt Instrument [Line Items]
Effective interest rate	0.00%	2.22%	0.00%	0.00%	2.22%	2.22%
Long-term Debt	$ 0	$ 900
Stated interest rate (as a percent)	2.15%	2.15%	2.15%	2.15%	2.15%	2.15%
3 month LIBOR0.07% FRN due 2016
Debt Instrument [Line Items]
Effective interest rate	0.00%	0.48%	0.00%	0.00%	0.48%	0.48%
Long-term Debt	$ 0	$ 800
0.70% Notes due 2016
Debt Instrument [Line Items]
Effective interest rate	0.00%	0.74%	0.00%	0.00%	0.74%	0.74%
Long-term Debt	$ 0	$ 398
Stated interest rate (as a percent)	0.70%	0.70%	0.70%	0.70%	0.70%	0.70%
5.55% Debentures due 2017
Debt Instrument [Line Items]
Effective interest rate	5.55%	5.55%	5.55%	5.55%	5.55%	5.55%
Long-term Debt	$ 1,000	$ 1,000
Stated interest rate (as a percent)	5.55%	5.55%	5.55%	5.55%	5.55%	5.55%
1.125% Notes due 2017
Debt Instrument [Line Items]
Effective interest rate	1.15%	1.15%	1.15%	1.15%	1.15%	1.15%
Long-term Debt	$ 699	$ 700
Stated interest rate (as a percent)	1.125%	1.125%	1.125%	1.125%	1.125%	1.125%
5.15% Debentures due 2018
Debt Instrument [Line Items]
Effective interest rate	5.18%	5.15%	5.18%	5.18%	5.15%	5.15%
Long-term Debt	$ 899	$ 899
Stated interest rate (as a percent)	5.15%	5.15%	5.15%	5.15%	5.15%	5.15%
1.65% Notes due 2018
Debt Instrument [Line Items]
Effective interest rate	1.70%	1.70%	1.70%	1.70%	1.70%	1.70%
Long-term Debt	$ 600	$ 602
Stated interest rate (as a percent)	1.65%	1.65%	1.65%	1.65%	1.65%	1.65%
4.75% Notes due 2019 (1B Euro 1.0449)(2)/(1B Euro 1.0882)(3)
Debt Instrument [Line Items]
Effective interest rate	5.83%	5.83%	5.83%	5.83%	5.83%	5.83%
Long-term Debt	$ 1,041	$ 1,085
Stated interest rate (as a percent)	4.75%	4.75%	4.75%	4.75%	4.75%	4.75%
Debt Instrument, Face Amount | €				€ 1,000		€ 1,000
Foreign Currency Exchange Rate, Translation	1.0449	1.0882	1.0449	1.0449	1.0882	1.0882
1.875% Notes due 2019
Debt Instrument [Line Items]
Effective interest rate	1.93%	1.93%	1.93%	1.93%	1.93%	1.93%
Long-term Debt	$ 499	$ 502
Stated interest rate (as a percent)	1.875%	1.875%	1.875%	1.875%	1.875%	1.875%
0.89% Notes due 2019
Debt Instrument [Line Items]
Effective interest rate	1.20%	0.00%	1.20%	1.20%	0.00%	0.00%
Long-term Debt	$ 299	$ 0
Stated interest rate (as a percent)	0.89%	0.89%	0.89%	0.89%	0.89%	0.89%
1.125% Notes due 2019
Debt Instrument [Line Items]
Effective interest rate	1.13%	0.00%	1.13%	1.13%	0.00%	0.00%
Long-term Debt	$ 699	$ 0
Stated interest rate (as a percent)	1.125%	1.125%	1.125%	1.125%	1.125%	1.125%
3% Zero Coupon Convertible Subordinated Debentures due 2020
Debt Instrument [Line Items]
Effective interest rate	3.00%	3.00%	3.00%	3.00%	3.00%	3.00%
Long-term Debt	$ 84	$ 137
Stated interest rate (as a percent)	3.00%	3.00%	3.00%	3.00%	3.00%	3.00%
2.95% Debentures due 2020
Debt Instrument [Line Items]
Effective interest rate	3.15%	3.15%	3.15%	3.15%	3.15%	3.15%
Long-term Debt	$ 546	$ 545
Stated interest rate (as a percent)	2.95%	2.95%	2.95%	2.95%	2.95%	2.95%
3.55% Notes due 2021
Debt Instrument [Line Items]
Effective interest rate	3.67%	3.67%	3.67%	3.67%	3.67%	3.67%
Long-term Debt	$ 447	$ 448
Stated interest rate (as a percent)	3.55%	3.55%	3.55%	3.55%	3.55%	3.55%
2.45% Notes due 2021
Debt Instrument [Line Items]
Effective interest rate	2.48%	2.48%	2.48%	2.48%	2.48%	2.48%
Long-term Debt	$ 348	$ 349
Stated interest rate (as a percent)	2.45%	2.45%	2.45%	2.45%	2.45%	2.45%
1.65% Notes due 2021
Debt Instrument [Line Items]
Effective interest rate	1.65%	0.00%	1.65%	1.65%	0.00%	0.00%
Long-term Debt	$ 997	$ 0
Stated interest rate (as a percent)	1.65%	1.65%	1.65%	1.65%	1.65%	1.65%
0.250% Notes due 2022 (1B Euro 1.0449)(2)
Debt Instrument [Line Items]
Effective interest rate	0.26%	0.00%	0.26%	0.26%	0.00%	0.00%
Long-term Debt	$ 1,041	$ 0
Stated interest rate (as a percent)	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Debt Instrument, Face Amount | €				€ 1,000
Foreign Currency Exchange Rate, Translation	1.0449		1.0449	1.0449
6.73% Debentures due 2023
Debt Instrument [Line Items]
Effective interest rate	6.73%	6.73%	6.73%	6.73%	6.73%	6.73%
Long-term Debt	$ 249	$ 250
Stated interest rate (as a percent)	6.73%	6.73%	6.73%	6.73%	6.73%	6.73%
3.375% Notes due 2023
Debt Instrument [Line Items]
Effective interest rate	3.17%	3.17%	3.17%	3.17%	3.17%	3.17%
Long-term Debt	$ 807	$ 811
Stated interest rate (as a percent)	3.375%	3.375%	3.375%	3.375%	3.375%	3.375%
2.05% Notes due 2023
Debt Instrument [Line Items]
Effective interest rate	2.09%	0.00%	2.09%	2.09%	0.00%	0.00%
Long-term Debt	$ 497	$ 0
Stated interest rate (as a percent)	2.05%	2.05%	2.05%	2.05%	2.05%	2.05%
0.650% Notes due 2024(750MM Euro 1.0449)(2)
Debt Instrument [Line Items]
Effective interest rate	0.68%	0.00%	0.68%	0.68%	0.00%	0.00%
Long-term Debt	$ 779	$ 0
Stated interest rate (as a percent)	0.65%	0.65%	0.65%	0.65%	0.65%	0.65%
Debt Instrument, Face Amount | €				€ 750
Foreign Currency Exchange Rate, Translation	1.0449		1.0449	1.0449
5.50% Notes due 2024 (500MM GBP 1.2237)(2)/(500MM GBP 1.4818)(3)
Debt Instrument [Line Items]
Effective interest rate	6.75%	6.75%	6.75%	6.75%	6.75%	6.75%
Long-term Debt	$ 605	$ 737
Stated interest rate (as a percent)	5.50%	5.50%	5.50%	5.50%	5.50%	5.50%
Debt Instrument, Face Amount | £			£ 0.5		£ 0.5
Foreign Currency Exchange Rate, Translation	1.2237	1.4818	1.2237	1.2237	1.4818	1.4818
2.45% Notes due 2026
Debt Instrument [Line Items]
Effective interest rate	2.47%	0.00%	2.47%	2.47%	0.00%	0.00%
Long-term Debt	$ 1,989	$ 0
1.150% Notes due 2028(750MM Euro 1.0449)(2)
Debt Instrument [Line Items]
Effective interest rate	1.21%	0.00%	1.21%	1.21%	0.00%	0.00%
Long-term Debt	$ 775	$ 0
6.95% Notes due 2029
Debt Instrument [Line Items]
Effective interest rate	7.14%	7.14%	7.14%	7.14%	7.14%	7.14%
Long-term Debt	$ 296	$ 297
Stated interest rate (as a percent)	6.95%	6.95%	6.95%	6.95%	6.95%	6.95%
4.95% Debentures due 2033
Debt Instrument [Line Items]
Effective interest rate	4.95%	4.95%	4.95%	4.95%	4.95%	4.95%
Long-term Debt	$ 497	$ 500
Stated interest rate (as a percent)	4.95%	4.95%	4.95%	4.95%	4.95%	4.95%
4.375% Notes due 2033
Debt Instrument [Line Items]
Effective interest rate	4.24%	4.24%	4.24%	4.24%	4.24%	4.24%
Long-term Debt	$ 857	$ 864
Stated interest rate (as a percent)	4.375%	4.375%	4.375%	4.375%	4.375%	4.375%
1.650% Notes due 2035 (1.5B Euro 1.0449)(2)
Debt Instrument [Line Items]
Effective interest rate	1.68%	0.00%	1.68%	1.68%	0.00%	0.00%
Long-term Debt	$ 1,549	$ 0
Stated interest rate (as a percent)	1.65%	1.65%	1.65%	1.65%	1.65%	1.65%
Debt Instrument, Face Amount | €				€ 1,500		€ 1,500
Foreign Currency Exchange Rate, Translation	1.0449		1.0449	1.0449
3.55% Notes due 2036
Debt Instrument [Line Items]
Effective interest rate	3.59%	0.00%	3.59%	3.59%	0.00%	0.00%
Long-term Debt	$ 987	$ 0
Stated interest rate (as a percent)	3.55%	3.55%	3.55%	3.55%	3.55%	3.55%
5.95% Notes due 2037
Debt Instrument [Line Items]
Effective interest rate	5.99%	5.99%	5.99%	5.99%	5.99%	5.99%
Long-term Debt	$ 990	$ 996
Stated interest rate (as a percent)	5.95%	5.95%	5.95%	5.95%	5.95%	5.95%
5.85% Debentures due 2038
Debt Instrument [Line Items]
Effective interest rate	5.85%	5.86%	5.85%	5.85%	5.86%	5.86%
Long-term Debt	$ 695	$ 700
Stated interest rate (as a percent)	5.85%	5.85%	5.85%	5.85%	5.85%	5.85%
4.50% Debentures due 2040
Debt Instrument [Line Items]
Effective interest rate	4.63%	4.63%	4.63%	4.63%	4.63%	4.63%
Long-term Debt	$ 537	$ 540
Stated interest rate (as a percent)	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%
4.85% Notes due 2041
Debt Instrument [Line Items]
Effective interest rate	4.89%	4.89%	4.89%	4.89%	4.89%	4.89%
Long-term Debt	$ 296	$ 298
Stated interest rate (as a percent)	4.85%	4.85%	4.85%	4.85%	4.85%	4.85%
4.50% Notes due 2043
Debt Instrument [Line Items]
Effective interest rate	4.52%	4.52%	4.52%	4.52%	4.52%	4.52%
Long-term Debt	$ 495	$ 499
Stated interest rate (as a percent)	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%
3.70% Notes due 2046
Debt Instrument [Line Items]
Effective interest rate	3.74%	0.00%	3.74%	3.74%	0.00%	0.00%
Long-term Debt	$ 1,970	$ 0
Other
Debt Instrument [Line Items]
Effective interest rate	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Long-term Debt	$ 77	$ 104
LIBOR | 3 month LIBOR0.07% FRN due 2016
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.07%	0.07%