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Investments, Loans and Long-Term Receivables (Tables)	12 Months Ended
Investments, Loans and Long-Term Receivables (Tables)	Dec. 31, 2020
Investments, Loans and Long-Term Receivables and Joint Venture Acquisition Obligation [Abstract]
Components of investments, loans and long-term receivables	Note 5—Investments, Loans and Long-Term Receivables Components of investments, loans and long-term receivables at December 31 were: Millions of Dollars 2020 2019 Equity investments $ 7,596 8,234 Loans and advances—related parties 114 219 Long-term receivables 137 243 Long-term investments in debt securities 217 133 Other investments 67 77 $ 8,131 8,906
Summarized financial information for equity method investments in affiliated companies	Summarized 100 percent earnings information for equity method investments in affiliated companies, combined, was as follows: Millions of Dollars 2020 2019 2018 Revenues $ 7,931 11,310 11,654 Income before income taxes 1,843 3,726 3,660 Net income 1,426 3,085 3,244 Summarized 100 percent balance sheet information for equity method investments in affiliated companies, combined, was as follows: Millions of Dollars 2020 2019 Current assets $ 2,579 3,289 Noncurrent assets 35,257 38,905 Current liabilities 2,110 2,603 Noncurrent liabilities 18,099 22,168