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Short-Term Borrowings and Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Carrying Value	$ 61,473	$ 56,756
Commercial Paper [Member]
Debt Instrument [Line Items]
Commercial Paper	1,088	800
2.750% Notes Due February 2023 [Member]
Debt Instrument [Line Items]
Par Value	$ 625
Debt Instrument, Interest Rate, Stated Percentage	2.75%
Unsecured Debt, Current	$ 0	622
2.875% Notes Due March 2023 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	2.875%
Unsecured Debt, Current	$ 0	746
3.500% notes due June 2023 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	3.50%
Unsecured Debt, Current	$ 0	750
3.500% notes due February 2024 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	3.50%
Unsecured Debt, Current	$ 750
Unsecured Long-term Debt, Noncurrent		749
0.550% notes due May 2024 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	0.55%
Unsecured Debt, Current	$ 999
Unsecured Long-term Debt, Noncurrent		998
2.375% notes due August 2024 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	2.375%
Unsecured Debt, Current	$ 750
Unsecured Long-term Debt, Noncurrent		749
5.000% notes due October 2024 [Member]
Debt Instrument [Line Items]
Par Value	$ 500
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Unsecured Debt, Current	$ 499
Unsecured Long-term Debt, Noncurrent		499
3.750% Notes Due July 2025 [Member]
Debt Instrument [Line Items]
Par Value	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	3.75%
Unsecured Long-term Debt, Noncurrent	$ 1,997	1,995
5.150% notes due October 2025 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	5.15%
Unsecured Long-term Debt, Noncurrent	$ 748	747
3.700% notes due December 2025 [Member]
Debt Instrument [Line Items]
Par Value	$ 300
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Unsecured Long-term Debt, Noncurrent	$ 299	299
1.250% notes due January 2026 [Member]
Debt Instrument [Line Items]
Par Value	$ 500
Debt Instrument, Interest Rate, Stated Percentage	1.25%
Unsecured Long-term Debt, Noncurrent	$ 498	498
3.100% notes due March 2026 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	3.10%
Unsecured Long-term Debt, Noncurrent	$ 998	998
1.150% notes due May 2026 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	1.15%
Unsecured Long-term Debt, Noncurrent	$ 924	893
3.450% notes due January 2027 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	3.45%
Unsecured Long-term Debt, Noncurrent	$ 748	748
3.375% notes due April 2027 [Member]
Debt Instrument [Line Items]
Par Value	$ 625
Debt Instrument, Interest Rate, Stated Percentage	3.375%
Unsecured Long-term Debt, Noncurrent	$ 622	622
3.700% notes due May 2027 [Member]
Debt Instrument [Line Items]
Par Value	$ 600
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Unsecured Long-term Debt, Noncurrent	$ 598	597
2.950% notes due October 2027 [Member]
Debt Instrument [Line Items]
Par Value	$ 950
Debt Instrument, Interest Rate, Stated Percentage	2.95%
Unsecured Long-term Debt, Noncurrent	$ 944	943
5.250% notes due February 2028 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Unsecured Long-term Debt, Noncurrent	$ 1,011	1,008
3.850% notes due June 2028 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,150
Debt Instrument, Interest Rate, Stated Percentage	3.85%
Unsecured Long-term Debt, Noncurrent	$ 1,146	1,145
3.875% notes due December 2028 [Member]
Debt Instrument [Line Items]
Par Value	$ 850
Debt Instrument, Interest Rate, Stated Percentage	3.875%
Unsecured Long-term Debt, Noncurrent	$ 846	845
4.250% notes due January 2029
Debt Instrument [Line Items]
Par Value	$ 1,250
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Unsecured Long-term Debt, Noncurrent	$ 1,238	0
4.000% notes due May 2029 [Member]
Debt Instrument [Line Items]
Par Value	$ 900
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Unsecured Long-term Debt, Noncurrent	$ 862	849
2.875% notes due August 2029 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	2.875%
Unsecured Long-term Debt, Noncurrent	$ 908	886
5.300% notes due February 2030 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,250
Debt Instrument, Interest Rate, Stated Percentage	5.30%
Unsecured Long-term Debt, Noncurrent	$ 1,275	1,269
2.000% notes due May 2030 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,250
Debt Instrument, Interest Rate, Stated Percentage	2.00%
Unsecured Long-term Debt, Noncurrent	$ 1,238	1,237
2.300% notes due May 2031 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage	2.30%
Unsecured Long-term Debt, Noncurrent	$ 1,290	1,256
4.200% notes due May 2032 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage	4.20%
Unsecured Long-term Debt, Noncurrent	$ 1,412	1,393
5.350% notes due February 2033 [Member]
Debt Instrument [Line Items]
Par Value	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	5.35%
Unsecured Long-term Debt, Noncurrent	$ 2,046	2,037
4.500% notes due April 2033
Debt Instrument [Line Items]
Par Value	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage	4.50%
Unsecured Long-term Debt, Noncurrent	$ 1,463	0
4.625% notes Due July 2035 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Unsecured Long-term Debt, Noncurrent	$ 1,014	993
5.800% notes Due March 2036 [Member]
Debt Instrument [Line Items]
Par Value	$ 850
Debt Instrument, Interest Rate, Stated Percentage	5.80%
Unsecured Long-term Debt, Noncurrent	$ 838	840
6.500% notes Due June 2037 [Member]
Debt Instrument [Line Items]
Par Value	$ 500
Debt Instrument, Interest Rate, Stated Percentage	6.50%
Unsecured Long-term Debt, Noncurrent	$ 491	493
6.625% notes due November 2037 [Member]
Debt Instrument [Line Items]
Par Value	$ 650
Debt Instrument, Interest Rate, Stated Percentage	6.625%
Unsecured Long-term Debt, Noncurrent	$ 640	642
6.875% notes Due Februray 2038 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,100
Debt Instrument, Interest Rate, Stated Percentage	6.875%
Unsecured Long-term Debt, Noncurrent	$ 1,078	1,079
3.500% notes due August 2039 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,250
Debt Instrument, Interest Rate, Stated Percentage	3.50%
Unsecured Long-term Debt, Noncurrent	$ 1,242	1,242
2.750% notes due May 2040 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	2.75%
Unsecured Long-term Debt, Noncurrent	$ 968	967
5.700% notes Due October 2040 [Member]
Debt Instrument [Line Items]
Par Value	$ 300
Debt Instrument, Interest Rate, Stated Percentage	5.70%
Unsecured Long-term Debt, Noncurrent	$ 296	296
5.950% notes Due Februrary 2041 [Member]
Debt Instrument [Line Items]
Par Value	$ 350
Debt Instrument, Interest Rate, Stated Percentage	5.95%
Unsecured Long-term Debt, Noncurrent	$ 346	346
3.050% notes due May 2041 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage	3.05%
Unsecured Long-term Debt, Noncurrent	$ 1,484	1,483
4.625% notes Due November 2041 [Member]
Debt Instrument [Line Items]
Par Value	$ 600
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Unsecured Long-term Debt, Noncurrent	$ 590	590
4.375% notes Due March 2042 [Member]
Debt Instrument [Line Items]
Par Value	$ 502
Debt Instrument, Interest Rate, Stated Percentage	4.375%
Unsecured Long-term Debt, Noncurrent	$ 486	486
3.950% notes Due October 2042 [Member]
Debt Instrument [Line Items]
Par Value	$ 625
Debt Instrument, Interest Rate, Stated Percentage	3.95%
Unsecured Long-term Debt, Noncurrent	$ 609	609
4.250% notes Due March 2043 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Unsecured Long-term Debt, Noncurrent	$ 736	736
4.750% notes Due July 2045 [Member]
Debt Instrument [Line Items]
Par Value	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Unsecured Long-term Debt, Noncurrent	$ 1,975	1,975
4.200% notes due January 2047 [Member]
Debt Instrument [Line Items]
Par Value	$ 750
Debt Instrument, Interest Rate, Stated Percentage	4.20%
Unsecured Long-term Debt, Noncurrent	$ 739	739
4.250% notes due April 2047 [Member]
Debt Instrument [Line Items]
Par Value	$ 725
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Unsecured Long-term Debt, Noncurrent	$ 718	718
3.750% notes due October 2047 [Member]
Debt Instrument [Line Items]
Par Value	$ 950
Debt Instrument, Interest Rate, Stated Percentage	3.75%
Unsecured Long-term Debt, Noncurrent	$ 935	935
4.250% notes due June 2048 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,350
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Unsecured Long-term Debt, Noncurrent	$ 1,331	1,331
4.450% notes due December 2048 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,100
Debt Instrument, Interest Rate, Stated Percentage	4.45%
Unsecured Long-term Debt, Noncurrent	$ 1,087	1,087
3.700% notes due August 2049 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,250
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Unsecured Long-term Debt, Noncurrent	$ 1,236	1,236
2.900% notes due May 2050 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,250
Debt Instrument, Interest Rate, Stated Percentage	2.90%
Unsecured Long-term Debt, Noncurrent	$ 1,211	1,210
3.250% notes due May 2051 [Member]
Debt Instrument [Line Items]
Par Value	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	3.25%
Unsecured Long-term Debt, Noncurrent	$ 1,972	1,971
4.750% notes due May 2052 [Member]
Debt Instrument [Line Items]
Par Value	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Unsecured Long-term Debt, Noncurrent	$ 1,966	1,965
5.875% notes due February 2053 [Member]
Debt Instrument [Line Items]
Par Value	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	5.875%
Unsecured Long-term Debt, Noncurrent	$ 1,968	1,968
5.050% notes due April 2053
Debt Instrument [Line Items]
Par Value	$ 2,000
Debt Instrument, Interest Rate, Stated Percentage	5.05%
Unsecured Long-term Debt, Noncurrent	$ 1,969	0
3.875% notes due August 2059 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,250
Debt Instrument, Interest Rate, Stated Percentage	3.875%
Unsecured Long-term Debt, Noncurrent	$ 1,229	1,228
3.125% notes due May 2060 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	3.125%
Unsecured Long-term Debt, Noncurrent	$ 966	966
4.950% notes due May 2062 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	4.95%
Unsecured Long-term Debt, Noncurrent	$ 981	981
6.050% notes due February 2063 [Member]
Debt Instrument [Line Items]
Par Value	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage	6.05%
Unsecured Long-term Debt, Noncurrent	$ 1,466	1,466
5.200% notes due April 2063
Debt Instrument [Line Items]
Par Value	$ 1,750
Debt Instrument, Interest Rate, Stated Percentage	5.20%
Unsecured Long-term Debt, Noncurrent	$ 1,709	$ 0

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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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