Loans Payable, Long-Term Debt and Leases - Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-Term Debt	$ 28,745	$ 30,690
2.75% notes due 2025
Debt Instrument [Line Items]
Stated interest rate	2.75%
Long-Term Debt	$ 2,496	2,495
2.15% notes due 2031
Debt Instrument [Line Items]
Stated interest rate	2.15%
Long-Term Debt	$ 1,986	1,986
2.75% notes due 2051
Debt Instrument [Line Items]
Stated interest rate	2.75%
Long-Term Debt	$ 1,979	1,979
3.70% notes due 2045
Debt Instrument [Line Items]
Stated interest rate	3.70%
Long-Term Debt	$ 1,978	1,977
3.40% notes due 2029
Debt Instrument [Line Items]
Stated interest rate	3.40%
Long-Term Debt	$ 1,738	1,736
1.70% notes due 2027
Debt Instrument [Line Items]
Stated interest rate	1.70%
Long-Term Debt	$ 1,494	1,493
2.90% notes due 2061
Debt Instrument [Line Items]
Stated interest rate	2.90%
Long-Term Debt	$ 1,483	1,484
4.00% notes due 2049
Debt Instrument [Line Items]
Stated interest rate	4.00%
Long-Term Debt	$ 1,471	1,470
4.15% notes due 2043
Debt Instrument [Line Items]
Stated interest rate	4.15%
Long-Term Debt	$ 1,239	1,239
1.45% notes due 2030
Debt Instrument [Line Items]
Stated interest rate	1.45%
Long-Term Debt	$ 1,237	1,235
2.45% notes due 2050
Debt Instrument [Line Items]
Stated interest rate	2.45%
Long-Term Debt	$ 1,213	1,212
1.875% euro-denominated notes due 2026
Debt Instrument [Line Items]
Stated interest rate	1.875%
Long-Term Debt	$ 1,060	1,123
0.75% notes due 2026
Debt Instrument [Line Items]
Stated interest rate	0.75%
Long-Term Debt	$ 995	993
1.90% notes due 2028
Debt Instrument [Line Items]
Stated interest rate	1.90%
Long-Term Debt	$ 994	994
3.90% notes due 2039
Debt Instrument [Line Items]
Stated interest rate	3.90%
Long-Term Debt	$ 985	984
2.35% notes due 2040
Debt Instrument [Line Items]
Stated interest rate	2.35%
Long-Term Debt	$ 984	983
2.90% notes due 2024
Debt Instrument [Line Items]
Stated interest rate	2.90%
Long-Term Debt	$ 749	748
6.50% notes due 2033
Debt Instrument [Line Items]
Stated interest rate	6.50%
Long-Term Debt	$ 711	715
0.50% euro-denominated notes due 2024
Debt Instrument [Line Items]
Stated interest rate	0.50%
Long-Term Debt	$ 531	563
1.375% euro-denominated notes due 2036
Debt Instrument [Line Items]
Stated interest rate	1.375%
Long-Term Debt	$ 527	559
2.50% euro-denominated notes due 2034
Debt Instrument [Line Items]
Stated interest rate	2.50%
Long-Term Debt	$ 526	558
3.60% notes due 2042
Debt Instrument [Line Items]
Stated interest rate	3.60%
Long-Term Debt	$ 492	491
6.55% notes due 2037
Debt Instrument [Line Items]
Stated interest rate	6.55%
Long-Term Debt	$ 408	409
5.75% notes due 2036
Debt Instrument [Line Items]
Stated interest rate	5.75%
Long-Term Debt	$ 339	338
5.95% debentures due 2028
Debt Instrument [Line Items]
Stated interest rate	5.95%
Long-Term Debt	$ 307	306
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
2.80% notes due 2023
Debt Instrument [Line Items]
Stated interest rate	2.80%
Long-Term Debt	$ 0	1,749
Other
Debt Instrument [Line Items]
Long-Term Debt	$ 167	$ 215