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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%

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