Borrowings - Schedule of Long-term Debt Instruments (Details) € in Millions, £ in Millions, $ in Millions	12 Months Ended
	Jan. 02, 2022 USD ($)	Jan. 03, 2021 USD ($)	Jan. 02, 2022 EUR (€)	Jan. 02, 2022 GBP (£)	Jan. 03, 2021 EUR (€)	Jan. 03, 2021 GBP (£)
Debt Instrument [Line Items]
Effective interest rate	2.89%	2.85%	2.89%	2.89%	2.85%	2.85%
Long-term debt	$ 32,116	$ 34,434
Less current portion	2,131	1,799
Total long-term debt	29,985	32,635
Excess of fair value over carrying value of debt	$ 3,200	$ 5,400
3.55% Notes due 2021
Debt Instrument [Line Items]
Effective interest rate	0.00%	3.67%	0.00%	0.00%	3.67%	3.67%
Long-term debt	$ 0	$ 450
Stated interest rate (as a percent)	3.55%		3.55%	3.55%
2.45% Notes due 2021
Debt Instrument [Line Items]
Effective interest rate	0.00%	2.48%	0.00%	0.00%	2.48%	2.48%
Long-term debt	$ 0	$ 350
Stated interest rate (as a percent)	2.45%		2.45%	2.45%
1.65% Notes due 2021
Debt Instrument [Line Items]
Effective interest rate	0.00%	1.65%	0.00%	0.00%	1.65%	1.65%
Long-term debt	$ 0	$ 999
Stated interest rate (as a percent)	1.65%		1.65%	1.65%
0.250% Notes due 2022 (1B Euro 1.1311)(2)/(1B Euro 1.2281)(3)
Debt Instrument [Line Items]
Effective interest rate	0.26%	0.26%	0.26%	0.26%	0.26%	0.26%
Long-term debt	$ 1,131	$ 1,227
Stated interest rate (as a percent)	0.25%		0.25%	0.25%
Debt Instrument, Face Amount | €			€ 1,000		€ 1,000
Foreign currency exchange rate, translation	1.1311	1.2281	1.1311	1.1311	1.2281	1.2281
2.25% Notes due 2022
Debt Instrument [Line Items]
Effective interest rate	2.31%	2.31%	2.31%	2.31%	2.31%	2.31%
Long-term debt	$ 1,000	$ 999
Stated interest rate (as a percent)	2.25%		2.25%	2.25%
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	$ 250	$ 250
Stated interest rate (as a percent)	6.73%		6.73%	6.73%
3.375% Notes due 2023
Debt Instrument [Line Items]
Effective interest rate	3.18%	3.17%	3.18%	3.18%	3.17%	3.17%
Long-term debt	$ 802	$ 803
Stated interest rate (as a percent)	3.375%		3.375%	3.375%
2.05% Notes due 2023
Debt Instrument [Line Items]
Effective interest rate	2.09%	2.09%	2.09%	2.09%	2.09%	2.09%
Long-term debt	$ 499	$ 499
Stated interest rate (as a percent)	2.05%		2.05%	2.05%
0.650% Notes due 2024 (750MM Euro 1.1311)(2)/(750MM Euro 1.2281)(3)
Debt Instrument [Line Items]
Effective interest rate	0.68%	0.68%	0.68%	0.68%	0.68%	0.68%
Long-term debt	$ 847	$ 919
Stated interest rate (as a percent)	0.65%		0.65%	0.65%
Debt Instrument, Face Amount | €			€ 750		€ 750
Foreign currency exchange rate, translation	1.1311	1.2281	1.1311	1.1311	1.2281	1.2281
5.50% Notes due 2024 (500MM 1.3485 GBP )(2)/(500MM GBP 1.3654)(3)
Debt Instrument [Line Items]
Effective interest rate	6.75%	6.75%	6.75%	6.75%	6.75%	6.75%
Long-term debt	$ 672	$ 679
Stated interest rate (as a percent)	5.50%		5.50%	5.50%
Debt Instrument, Face Amount | £				£ 500		£ 500
Foreign currency exchange rate, translation	1.3485	1.3654	1.3485	1.3485	1.3654	1.3654
2.625% Notes due 2025
Debt Instrument [Line Items]
Effective interest rate	2.63%	2.63%	2.63%	2.63%	2.63%	2.63%
Long-term debt	$ 749	$ 748
Stated interest rate (as a percent)	2.625%		2.625%	2.625%
0.55% Notes due 2025
Debt Instrument [Line Items]
Effective interest rate	0.57%	0.57%	0.57%	0.57%	0.57%	0.57%
Long-term debt	$ 983	$ 996
Stated interest rate (as a percent)	0.55%		0.55%	0.55%
2.45% Notes due 2026
Debt Instrument [Line Items]
Effective interest rate	2.47%	2.47%	2.47%	2.47%	2.47%	2.47%
Long-term debt	$ 1,995	$ 1,994
Stated interest rate (as a percent)	2.45%		2.45%	2.45%
2.95% Notes due 2027
Debt Instrument [Line Items]
Effective interest rate	2.96%	2.96%	2.96%	2.96%	2.96%	2.96%
Long-term debt	$ 978	$ 997
Stated interest rate (as a percent)	2.95%		2.95%	2.95%
0.95% Notes due 2027
Debt Instrument [Line Items]
Effective interest rate	0.96%	0.96%	0.96%	0.96%	0.96%	0.96%
Long-term debt	$ 1,478	$ 1,494
Stated interest rate (as a percent)	0.95%		0.95%	0.95%
1.150% Notes due 2028 (750MM Euro 1.1311)(2)/(750MM Euro 1.2281)(3)
Debt Instrument [Line Items]
Effective interest rate	1.21%	1.21%	1.21%	1.21%	1.21%	1.21%
Long-term debt	$ 843	$ 915
Stated interest rate (as a percent)	1.15%		1.15%	1.15%
Debt Instrument, Face Amount | €			€ 750		€ 750
Foreign currency exchange rate, translation	1.1311	1.2281	1.1311	1.1311	1.2281	1.2281
2.90% Notes due 2028
Debt Instrument [Line Items]
Effective interest rate	2.91%	2.91%	2.91%	2.91%	2.91%	2.91%
Long-term debt	$ 1,495	$ 1,495
Stated interest rate (as a percent)	2.90%		2.90%	2.90%
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	$ 298	$ 297
Stated interest rate (as a percent)	6.95%		6.95%	6.95%
1.30% Notes due 2030
Debt Instrument [Line Items]
Effective interest rate	1.30%	1.30%	1.30%	1.30%	1.30%	1.30%
Long-term debt	$ 1,723	$ 1,743
Stated interest rate (as a percent)	1.30%		1.30%	1.30%
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	$ 498	$ 498
Stated interest rate (as a percent)	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	$ 854	$ 855
Stated interest rate (as a percent)	4.375%		4.375%	4.375%
1.650% Notes due 2035 (1.5B Euro 1.1311)(2)/(1.5B Euro 1.2281)(3)
Debt Instrument [Line Items]
Effective interest rate	1.68%	1.68%	1.68%	1.68%	1.68%	1.68%
Long-term debt	$ 1,683	$ 1,827
Stated interest rate (as a percent)	1.65%		1.65%	1.65%
Debt Instrument, Face Amount | €			€ 1,500		€ 1,500
Foreign currency exchange rate, translation	1.1311	1.2281	1.1311	1.1311	1.2281	1.2281
3.55% Notes due 2036
Debt Instrument [Line Items]
Effective interest rate	3.59%	3.59%	3.59%	3.59%	3.59%	3.59%
Long-term debt	$ 974	$ 989
Stated interest rate (as a percent)	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	$ 993	$ 992
Stated interest rate (as a percent)	5.95%		5.95%	5.95%
3.625% Notes due 2037
Debt Instrument [Line Items]
Effective interest rate	3.64%	3.64%	3.64%	3.64%	3.64%	3.64%
Long-term debt	$ 1,475	$ 1,488
Stated interest rate (as a percent)	3.625%		3.625%	3.625%
5.85% Debentures due 2038
Debt Instrument [Line Items]
Effective interest rate	5.85%	5.85%	5.85%	5.85%	5.85%	5.85%
Long-term debt	$ 696	$ 696
Stated interest rate (as a percent)	5.85%		5.85%	5.85%
3.400% Notes due 2038
Debt Instrument [Line Items]
Effective interest rate	3.42%	3.42%	3.42%	3.42%	3.42%	3.42%
Long-term debt	$ 992	$ 991
Stated interest rate (as a percent)	3.40%		3.40%	3.40%
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	$ 540	$ 539
Stated interest rate (as a percent)	4.50%		4.50%	4.50%
2.10% Notes due 2040
Debt Instrument [Line Items]
Effective interest rate	2.14%	2.14%	2.14%	2.14%	2.14%	2.14%
Long-term debt	$ 974	$ 986
Stated interest rate (as a percent)	2.10%		2.10%	2.10%
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	$ 297	$ 297
Stated interest rate (as a percent)	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	$ 496	$ 496
Stated interest rate (as a percent)	4.50%		4.50%	4.50%
3.70% Notes due 2046
Debt Instrument [Line Items]
Effective interest rate	3.74%	3.74%	3.74%	3.74%	3.74%	3.74%
Long-term debt	$ 1,975	$ 1,974
Stated interest rate (as a percent)	3.70%		3.70%	3.70%
3.75% Notes due 2047
Debt Instrument [Line Items]
Effective interest rate	3.76%	3.76%	3.76%	3.76%	3.76%	3.76%
Long-term debt	$ 971	$ 991
Stated interest rate (as a percent)	3.75%		3.75%	3.75%
3.500% Notes due 2048
Debt Instrument [Line Items]
Effective interest rate	3.52%	3.52%	3.52%	3.52%	3.52%	3.52%
Long-term debt	$ 743	$ 742
Stated interest rate (as a percent)	3.50%		3.50%	3.50%
2.250% Notes due 2050
Debt Instrument [Line Items]
Effective interest rate	2.29%	2.29%	2.29%	2.29%	2.29%	2.29%
Long-term debt	$ 983	$ 984
Stated interest rate (as a percent)	2.25%		2.25%	2.25%
2.450% Notes due 2060
Debt Instrument [Line Items]
Effective interest rate	2.49%	2.49%	2.49%	2.49%	2.49%	2.49%
Long-term debt	$ 1,222	$ 1,228
Stated interest rate (as a percent)	2.45%		2.45%	2.45%
Other
Debt Instrument [Line Items]
Effective interest rate	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Long-term debt	$ 7	$ 7