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Cash Flow Information (Tables)	9 Months Ended
Cash Flow Information (Tables)	Sep. 30, 2020
Cash Flow Information [Abstract]
Cash Flow Information	Note 16—Cash Flow Information Millions of Dollars Nine Months Ended September 30 2020 2019 Cash Payments Interest $ 591 614 Income taxes 803 2,210 Net Sales (Purchases) of Investments Short-term investments purchased $ (9,662) (1,894) Short-term investments sold 8,776 1,229 Long-term investments purchased (271) - Long-term investments sold 68 - $ (1,089) (665)