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Loans Payable, Long-Term Debt and Leases - Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-Term Debt	$ 33,683	$ 28,745
2.75% notes due 2025
Debt Instrument [Line Items]
Stated interest rate	2.75%
Long-Term Debt	$ 2,498	2,496
2.15% notes due 2031
Debt Instrument [Line Items]
Stated interest rate	2.15%
Long-Term Debt	$ 1,988	1,986
2.75% notes due 2051
Debt Instrument [Line Items]
Stated interest rate	2.75%
Long-Term Debt	$ 1,980	1,979
3.70% notes due 2045
Debt Instrument [Line Items]
Stated interest rate	3.70%
Long-Term Debt	$ 1,979	1,978
3.40% notes due 2029
Debt Instrument [Line Items]
Stated interest rate	3.40%
Long-Term Debt	$ 1,740	1,738
4.50% notes due 2033
Debt Instrument [Line Items]
Stated interest rate	4.50%
Long-Term Debt	$ 1,547	0
1.70% notes due 2027
Debt Instrument [Line Items]
Stated interest rate	1.70%
Long-Term Debt	$ 1,495	1,494
2.90% notes due 2061
Debt Instrument [Line Items]
Stated interest rate	2.90%
Long-Term Debt	$ 1,484	1,483
5.00% notes due 2053
Debt Instrument [Line Items]
Stated interest rate	5.00%
Long-Term Debt	$ 1,481	0
4.00% notes due 2049
Debt Instrument [Line Items]
Stated interest rate	4.00%
Long-Term Debt	$ 1,473	1,471
4.15% notes due 2043
Debt Instrument [Line Items]
Stated interest rate	4.15%
Long-Term Debt	$ 1,240	1,239
1.45% notes due 2030
Debt Instrument [Line Items]
Stated interest rate	1.45%
Long-Term Debt	$ 1,238	1,237
2.45% notes due 2050
Debt Instrument [Line Items]
Stated interest rate	2.45%
Long-Term Debt	$ 1,214	1,213
1.875% euro-denominated notes due 2026
Debt Instrument [Line Items]
Stated interest rate	1.875%
Long-Term Debt	$ 1,103	1,060
0.75% notes due 2026
Debt Instrument [Line Items]
Stated interest rate	0.75%
Long-Term Debt	$ 996	995
1.90% notes due 2028
Debt Instrument [Line Items]
Stated interest rate	1.90%
Long-Term Debt	$ 995	994
5.15% notes due 2063
Debt Instrument [Line Items]
Stated interest rate	5.15%
Long-Term Debt	$ 987	0
3.90% notes due 2039
Debt Instrument [Line Items]
Stated interest rate	3.90%
Long-Term Debt	$ 986	985
2.35% notes due 2040
Debt Instrument [Line Items]
Stated interest rate	2.35%
Long-Term Debt	$ 985	984
4.30% notes due 2030
Debt Instrument [Line Items]
Stated interest rate	4.30%
Long-Term Debt	$ 745	0
4.90% notes due 2044
Debt Instrument [Line Items]
Stated interest rate	4.90%
Long-Term Debt	$ 740	0
6.50% notes due 2033
Debt Instrument [Line Items]
Stated interest rate	6.50%
Long-Term Debt	$ 707	711
1.375% euro-denominated notes due 2036
Debt Instrument [Line Items]
Stated interest rate	1.375%
Long-Term Debt	$ 548	527
2.50% euro-denominated notes due 2034
Debt Instrument [Line Items]
Stated interest rate	2.50%
Long-Term Debt	$ 548	526
4.05% notes due 2028
Debt Instrument [Line Items]
Stated interest rate	4.05%
Long-Term Debt	$ 497	0
3.60% notes due 2042
Debt Instrument [Line Items]
Stated interest rate	3.60%
Long-Term Debt	$ 492	492
6.55% notes due 2037
Debt Instrument [Line Items]
Stated interest rate	6.55%
Long-Term Debt	$ 406	408
5.75% notes due 2036
Debt Instrument [Line Items]
Stated interest rate	5.75%
Long-Term Debt	$ 339	339
5.95% debentures due 2028
Debt Instrument [Line Items]
Stated interest rate	5.95%
Long-Term Debt	$ 307	307
5.85% notes due 2039
Debt Instrument [Line Items]
Stated interest rate	5.85%
Long-Term Debt	$ 271	271
6.40% debentures due 2028
Debt Instrument [Line Items]
Stated interest rate	6.40%
Long-Term Debt	$ 250	250
6.30% debentures due 2026
Debt Instrument [Line Items]
Stated interest rate	6.30%
Long-Term Debt	$ 135	135
2.90% notes due 2024
Debt Instrument [Line Items]
Stated interest rate	2.90%
Long-Term Debt	$ 0	749
0.50% euro-denominated notes due 2024
Debt Instrument [Line Items]
Stated interest rate	0.50%
Long-Term Debt	$ 0	531
Other
Debt Instrument [Line Items]
Long-Term Debt	$ 289	$ 167

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