Indebtedness (Schedule of Long-Term Debt) (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term debt, including current maturities	$ 26,494	$ 27,581
Less current portion of long-term debt	4,149	2,798
Long-term debt	22,345	24,783
Finance lease, liability	$ 82	71
U.S. Dollar Notes
Debt Instrument [Line Items]
Average interest rate	3.261%
Long-term debt, including current maturities	$ 18,853	19,397
U.S. Dollar Notes \| Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.875%
U.S. Dollar Notes \| Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	6.375%
Euro Notes \| Foreign Currency Obligations
Debt Instrument [Line Items]
Average interest rate	1.995%
Long-term debt, including current maturities	$ 7,149	7,687
Euro Notes \| Foreign Currency Obligations \| Minimum
Debt Instrument [Line Items]
Interest rate, stated percentage	0.125%
Euro Notes \| Foreign Currency Obligations \| Maximum
Debt Instrument [Line Items]
Interest rate, stated percentage	3.125%
Swiss Franc Notes \| Foreign Currency Obligations
Debt Instrument [Line Items]
Interest rate, stated percentage	1.625%
Long-term debt, including current maturities	$ 263	273
Other \| Foreign Currency Obligations
Debt Instrument [Line Items]
Average interest rate	3.496%
Long-term debt, including current maturities	$ 229	$ 224

The average effective interest rate during the reporting period.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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