Borrowings - Short-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Short-term debt disclosures
Short-term loans	$ 36	$ 130
Long-term debt - current maturities	5,162	7,053
Short-term Debt, Total	$ 5,198	$ 7,183
Short-term loans
Short-term debt disclosures
Weighted-average interest rates for short-term debt (as a percent)	5.30%	5.70%

Amount of long-term debt and lease obligation, classified as current.

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Amount of borrowings from a bank classified as other, maturing within one year or operating cycle, if longer.

+ References

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 210
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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