Borrowings - Schedule of Long-term Debt Instruments (Details) € in Millions, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 GBP (£)	Jan. 01, 2023 EUR (€)	Jan. 01, 2023 GBP (£)
Debt Instrument [Line Items]
Long-term debt	$ 27,350	$ 28,437
Effective interest rate	2.98%	3.04%	2.98%	2.98%	3.04%	3.04%
Less current portion	$ 1,469	$ 1,551
Total long-term debt	25,881	26,886
Excess of carrying value over fair value of debt	1,000
Excess of fair value over carrying value of debt		1,600
6.73% Debentures due 2023
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 250
Effective interest rate	0.00%	6.73%	0.00%	0.00%	6.73%	6.73%
Stated interest rate (as a percent)	6.73%		6.73%	6.73%
3.375% Notes due 2023
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 801
Effective interest rate	0.00%	3.17%	0.00%	0.00%	3.17%	3.17%
Stated interest rate (as a percent)	3.375%		3.375%	3.375%
2.05% Notes due 2023
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 500
Effective interest rate	0.00%	2.09%	0.00%	0.00%	2.09%	2.09%
Stated interest rate (as a percent)	2.05%		2.05%	2.05%
0.650% Notes due 2024 (750MM Euro 1.1090)(2)/(750MM Euro 1.0651)(3)
Debt Instrument [Line Items]
Long-term debt	$ 831	$ 792
Effective interest rate	0.68%	0.68%	0.68%	0.68%	0.68%	0.68%
Stated interest rate (as a percent)	0.65%		0.65%	0.65%
Debt instrument, face amount | €			€ 750		€ 750
Foreign currency exchange rate, translation	1.1090	1.0651	1.1090	1.1090	1.0651	1.0651
5.50% Notes due 2024 (500MM 1.2756 GBP )(2)/(500MM GBP 1.2037)(3)
Debt Instrument [Line Items]
Long-term debt	$ 637	$ 600
Effective interest rate	6.75%	6.75%	6.75%	6.75%	6.75%	6.75%
Stated interest rate (as a percent)	5.50%		5.50%	5.50%
Debt instrument, face amount | £				£ 500		£ 500
Foreign currency exchange rate, translation	1.2756	1.2037	1.2756	1.2756	1.2037	1.2037
2.625% Notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 750	$ 749
Effective interest rate	2.63%	2.63%	2.63%	2.63%	2.63%	2.63%
Stated interest rate (as a percent)	2.625%		2.625%	2.625%
0.55% Notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 950	$ 918
Effective interest rate	0.57%	0.57%	0.57%	0.57%	0.57%	0.57%
Stated interest rate (as a percent)	0.55%		0.55%	0.55%
2.46% Notes due 2026
Debt Instrument [Line Items]
Long-term debt	$ 1,997	$ 1,996
Effective interest rate	2.47%	2.47%	2.47%	2.47%	2.47%	2.47%
Stated interest rate (as a percent)	2.46%		2.46%	2.46%
2.95% Notes due 2027
Debt Instrument [Line Items]
Long-term debt	$ 900	$ 877
Effective interest rate	2.96%	2.96%	2.96%	2.96%	2.96%	2.96%
Stated interest rate (as a percent)	2.95%		2.95%	2.95%
0.95% Notes due 2027
Debt Instrument [Line Items]
Long-term debt	$ 1,419	$ 1,394
Effective interest rate	0.96%	0.96%	0.96%	0.96%	0.96%	0.96%
Stated interest rate (as a percent)	0.95%		0.95%	0.95%
1.150% Notes due 2028 (750MM Euro 1.1090)(2)/(750MM Euro 1.0651)(3)
Debt Instrument [Line Items]
Long-term debt	$ 828	$ 794
Effective interest rate	1.21%	1.21%	1.21%	1.21%	1.21%	1.21%
Stated interest rate (as a percent)	1.15%		1.15%	1.15%
Debt instrument, face amount | €			€ 750		€ 750
Foreign currency exchange rate, translation	1.1090	1.0651	1.1090	1.1090	1.0651	1.0651
2.90% Notes due 2028
Debt Instrument [Line Items]
Long-term debt	$ 1,497	$ 1,496
Effective interest rate	2.91%	2.91%	2.91%	2.91%	2.91%	2.91%
Stated interest rate (as a percent)	2.90%		2.90%	2.90%
6.95% Notes due 2029
Debt Instrument [Line Items]
Long-term debt	$ 298	$ 298
Effective interest rate	7.14%	7.14%	7.14%	7.14%	7.14%	7.14%
Stated interest rate (as a percent)	6.95%		6.95%	6.95%
1.30% Notes due 2030
Debt Instrument [Line Items]
Long-term debt	$ 1,630	$ 1,607
Effective interest rate	1.30%	1.30%	1.30%	1.30%	1.30%	1.30%
Stated interest rate (as a percent)	1.30%		1.30%	1.30%
4.95% Debentures due 2033
Debt Instrument [Line Items]
Long-term debt	$ 499	$ 498
Effective interest rate	4.95%	4.95%	4.95%	4.95%	4.95%	4.95%
Stated interest rate (as a percent)	4.95%		4.95%	4.95%
4.375% Notes due 2033
Debt Instrument [Line Items]
Long-term debt	$ 854	$ 854
Effective interest rate	4.24%	4.24%	4.24%	4.24%	4.24%	4.24%
Stated interest rate (as a percent)	4.375%		4.375%	4.375%
1.650% Notes due 2035 (1.5B Euro 1.1090)(2)/(1.5B Euro 1.0651)(3)
Debt Instrument [Line Items]
Long-term debt	$ 1,652	$ 1,591
Effective interest rate	1.68%	1.68%	1.68%	1.68%	1.68%	1.68%
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	1.1090	1.0651	1.1090	1.1090	1.0651	1.0651
3.587% Notes due 2036
Debt Instrument [Line Items]
Long-term debt	$ 864	$ 842
Effective interest rate	3.59%	3.59%	3.59%	3.59%	3.59%	3.59%
Stated interest rate (as a percent)	3.587%		3.587%	3.587%
5.95% Notes due 2037
Debt Instrument [Line Items]
Long-term debt	$ 994	$ 993
Effective interest rate	5.99%	5.99%	5.99%	5.99%	5.99%	5.99%
Stated interest rate (as a percent)	5.95%		5.95%	5.95%
3.625% Notes due 2037
Debt Instrument [Line Items]
Long-term debt	$ 1,357	$ 1,336
Effective interest rate	3.64%	3.64%	3.64%	3.64%	3.64%	3.64%
Stated interest rate (as a percent)	3.625%		3.625%	3.625%
5.85% Debentures due 2038
Debt Instrument [Line Items]
Long-term debt	$ 697	$ 697
Effective interest rate	5.85%	5.85%	5.85%	5.85%	5.85%	5.85%
Stated interest rate (as a percent)	5.85%		5.85%	5.85%
3.400% Notes due 2038
Debt Instrument [Line Items]
Long-term debt	$ 993	$ 992
Effective interest rate	3.42%	3.42%	3.42%	3.42%	3.42%	3.42%
Stated interest rate (as a percent)	3.40%		3.40%	3.40%
4.50% Debentures due 2040
Debt Instrument [Line Items]
Long-term debt	$ 541	$ 540
Effective interest rate	4.63%	4.63%	4.63%	4.63%	4.63%	4.63%
Stated interest rate (as a percent)	4.50%		4.50%	4.50%
2.10% Notes due 2040
Debt Instrument [Line Items]
Long-term debt	$ 849	$ 828
Effective interest rate	2.14%	2.14%	2.14%	2.14%	2.14%	2.14%
Stated interest rate (as a percent)	2.10%		2.10%	2.10%
4.85% Notes due 2041
Debt Instrument [Line Items]
Long-term debt	$ 297	$ 297
Effective interest rate	4.89%	4.89%	4.89%	4.89%	4.89%	4.89%
Stated interest rate (as a percent)	4.85%		4.85%	4.85%
4.50% Notes due 2043
Debt Instrument [Line Items]
Long-term debt	$ 496	$ 496
Effective interest rate	4.52%	4.52%	4.52%	4.52%	4.52%	4.52%
Stated interest rate (as a percent)	4.50%		4.50%	4.50%
3.73% Notes due 2046
Debt Instrument [Line Items]
Long-term debt	$ 1,977	$ 1,976
Effective interest rate	3.74%	3.74%	3.74%	3.74%	3.74%	3.74%
Stated interest rate (as a percent)	3.73%		3.73%	3.73%
3.75% Notes due 2047
Debt Instrument [Line Items]
Long-term debt	$ 832	$ 812
Effective interest rate	3.76%	3.76%	3.76%	3.76%	3.76%	3.76%
Stated interest rate (as a percent)	3.75%		3.75%	3.75%
3.500% Notes due 2048
Debt Instrument [Line Items]
Long-term debt	$ 743	$ 743
Effective interest rate	3.52%	3.52%	3.52%	3.52%	3.52%	3.52%
Stated interest rate (as a percent)	3.50%		3.50%	3.50%
2.250% Notes due 2050
Debt Instrument [Line Items]
Long-term debt	$ 826	$ 808
Effective interest rate	2.29%	2.29%	2.29%	2.29%	2.29%	2.29%
Stated interest rate (as a percent)	2.25%		2.25%	2.25%
2.450% Notes due 2060
Debt Instrument [Line Items]
Long-term debt	$ 1,073	$ 1,055
Effective interest rate	2.49%	2.49%	2.49%	2.49%	2.49%	2.49%
Stated interest rate (as a percent)	2.45%		2.45%	2.45%
Other
Debt Instrument [Line Items]
Long-term debt	$ 69	$ 7
Effective interest rate	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%