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Investments, Loans and LT Receivables Components (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Summary of Investment Holdings [Line Items] |  |
Equity investments | $ 8,234 | $ 9,005
Loans and advances-related parties | 219 | 335
Long-term receivables | 243 | 238
Other investments | 77 | 86
Total | 8,906 | 9,664
Other Long-term Investments [Member] |  |
Summary of Investment Holdings [Line Items] |  |
Investments in long-term debt securities | $ 133 | $ 0

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