Assets And Liabilities Measured At Fair Value (Details) - USD ($) $ in Millions |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Assets and Liabilities Measured at Fair Value | Ìý | Ìý |
| Marketable equity securities | $ 266 | $ 353 |
| Estimate of Fair Value Measurement [Member] | Ìý | Ìý |
| Assets and Liabilities Measured at Fair Value | Ìý | Ìý |
| Cash equivalents | 2,586 | 992 |
| Marketable equity securities | 266 | 353 |
| Financial instrument assets | 424 | 532 |
| Debt | 4,545 | 3,678 |
| Financial instrument liabilities | 106 | 53 |
| Level 1 | Ìý | Ìý |
| Assets and Liabilities Measured at Fair Value | Ìý | Ìý |
| Cash equivalents | 2,586 | 992 |
| Marketable equity securities | 181 | 242 |
| Financial instrument assets | 84 | 63 |
| Level 2 | Ìý | Ìý |
| Assets and Liabilities Measured at Fair Value | Ìý | Ìý |
| Marketable equity securities | 85 | 111 |
| Financial instrument assets | 340 | 469 |
| Debt | 4,545 | 3,678 |
| Financial instrument liabilities | $ 106 | $ 53 |
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. No definition available.
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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. No definition available.
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. No definition available.
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value portion of other assets. No definition available.
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