Fair Value Measurements - Financial Liabilities not Measured at Fair Value (Details)	Mar. 31, 2024 USD ($)	Mar. 31, 2024 EUR (€)	Dec. 31, 2023 USD ($)
Financial Liabilities
Current Debt	$ 8,550,000,000		$ 3,451,000,000
Non-Current Debt
Non-Current Debt	25,082,000,000		$ 25,881,000,000
Carrying Amount
Financial Liabilities
Current Debt	8,550,000,000
Non-Current Debt
Non-Current Debt	25,082,000,000
Estimated Fair Value
Financial Liabilities
Current Debt	8,533,000,000
Non-Current Debt
Non-Current Debt	$ 23,438,000,000
0.55% Notes due 2025
Non-Current Debt
Stated interest rate (as a percent)	0.55%	0.55%
0.55% Notes due 2025 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 974,000,000
0.55% Notes due 2025 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 940,000,000
2.46% Notes due 2026
Non-Current Debt
Stated interest rate (as a percent)	2.46%	2.46%
2.46% Notes due 2026 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,998,000,000
2.46% Notes due 2026 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,917,000,000
2.95% Notes due 2027
Non-Current Debt
Stated interest rate (as a percent)	2.95%	2.95%
2.95% Notes due 2027 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 907,000,000
2.95% Notes due 2027 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 958,000,000
0.95% Notes due 2027
Non-Current Debt
Stated interest rate (as a percent)	0.95%	0.95%
0.95% Notes due 2027 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,434,000,000
0.95% Notes due 2027 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,337,000,000
2.90% Notes due 2028
Non-Current Debt
Stated interest rate (as a percent)	2.90%	2.90%
2.90% Notes due 2028 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,497,000,000
2.90% Notes due 2028 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,422,000,000
1.150% Notes due 2028 (750MM Euro 1.0809)
Non-Current Debt
Stated interest rate (as a percent)	1.15%	1.15%
Debt instrument, face amount | €		€ 750,000,000
Foreign exchange rate	1.0809	1.0809
1.150% Notes due 2028 (750MM Euro 1.0809) | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 807,000,000
1.150% Notes due 2028 (750MM Euro 1.0809) | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 751,000,000
6.95% Notes due 2029
Non-Current Debt
Stated interest rate (as a percent)	6.95%	6.95%
6.95% Notes due 2029 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 298,000,000
6.95% Notes due 2029 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 339,000,000
1.30% Notes due 2030
Non-Current Debt
Stated interest rate (as a percent)	1.30%	1.30%
1.30% Notes due 2030 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,633,000,000
1.30% Notes due 2030 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,466,000,000
4.95% Debentures due 2033
Non-Current Debt
Stated interest rate (as a percent)	4.95%	4.95%
4.95% Debentures due 2033 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 499,000,000
4.95% Debentures due 2033 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 523,000,000
4.375% Notes due 2033
Non-Current Debt
Stated interest rate (as a percent)	4.375%	4.375%
4.375% Notes due 2033 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 854,000,000
4.375% Notes due 2033 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	848,000,000
1.650% Notes due 2035 (1.5B Euro 1.0809) | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,610,000,000
Stated interest rate (as a percent)	1.65%	1.65%
Debt instrument, face amount	$ 1,500,000,000
Foreign exchange rate	1.0809	1.0809
1.650% Notes due 2035 (1.5B Euro 1.0809) | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,430,000,000
3.587% Notes due 2036
Non-Current Debt
Stated interest rate (as a percent)	3.587%	3.587%
3.587% Notes due 2036 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 862,000,000
3.587% Notes due 2036 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 893,000,000
5.95% Notes due 2037
Non-Current Debt
Stated interest rate (as a percent)	5.95%	5.95%
5.95% Notes due 2037 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 994,000,000
5.95% Notes due 2037 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,110,000,000
3.625% Notes due 2037
Non-Current Debt
Stated interest rate (as a percent)	3.625%	3.625%
3.625% Notes due 2037 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,354,000,000
3.625% Notes due 2037 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,333,000,000
3.40% Notes due 2038
Non-Current Debt
Stated interest rate (as a percent)	3.40%	3.40%
3.40% Notes due 2038 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 993,000,000
3.40% Notes due 2038 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 858,000,000
5.85% Debentures due 2038
Non-Current Debt
Stated interest rate (as a percent)	5.85%	5.85%
5.85% Debentures due 2038 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 697,000,000
5.85% Debentures due 2038 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 772,000,000
4.50% Debentures due 2040
Non-Current Debt
Stated interest rate (as a percent)	4.50%	4.50%
4.50% Debentures due 2040 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 541,000,000
4.50% Debentures due 2040 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 530,000,000
2.10% Notes due 2040
Non-Current Debt
Stated interest rate (as a percent)	2.10%	2.10%
2.10% Notes due 2040 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 844,000,000
2.10% Notes due 2040 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 688,000,000
4.85% Notes due 2041
Non-Current Debt
Stated interest rate (as a percent)	4.85%	4.85%
4.85% Notes due 2041 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 297,000,000
4.85% Notes due 2041 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 301,000,000
4.50% Notes due 2043
Non-Current Debt
Stated interest rate (as a percent)	4.50%	4.50%
4.50% Notes due 2043 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 496,000,000
4.50% Notes due 2043 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 481,000,000
3.73% Notes due 2046
Non-Current Debt
Stated interest rate (as a percent)	3.73%	3.73%
3.73% Notes due 2046 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,978,000,000
3.73% Notes due 2046 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 1,675,000,000
3.75% Notes due 2047
Non-Current Debt
Stated interest rate (as a percent)	3.75%	3.75%
3.75% Notes due 2047 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 825,000,000
3.75% Notes due 2047 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 829,000,000
3.50% Notes due 2048
Non-Current Debt
Stated interest rate (as a percent)	3.50%	3.50%
3.50% Notes due 2048 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 743,000,000
3.50% Notes due 2048 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 598,000,000
2.25% Notes due 2050
Non-Current Debt
Stated interest rate (as a percent)	2.25%	2.25%
2.25% Notes due 2050 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 816,000,000
2.25% Notes due 2050 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 629,000,000
2.45% Notes due 2060
Non-Current Debt
Stated interest rate (as a percent)	2.45%	2.45%
2.45% Notes due 2060 | Carrying Amount
Non-Current Debt
Non-Current Debt	$ 1,064,000,000
2.45% Notes due 2060 | Estimated Fair Value
Non-Current Debt
Non-Current Debt	743,000,000
Other | Carrying Amount
Non-Current Debt
Non-Current Debt	67,000,000
Other | Estimated Fair Value
Non-Current Debt
Non-Current Debt	$ 67,000,000