Accumulated Other Comprehensive Loss	6 Months Ended
Accumulated Other Comprehensive Loss	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	Note 15—Accumulated Other Comprehensive Loss Accumulated other comprehensive loss in the equity section of our consolidated balance sheet included: Millions of Dollars Defined Benefit Plans Net Unrealized Gain on Securities Foreign Currency Translation Accumulated Other Comprehensive Income (Loss) December 31, 2019 $ (350) - (5,007) (5,357) Other comprehensive income (loss) 18 2 (488) (468) June 30, 2020 $ (332) 2 (5,495) (5,825) The following table summarizes reclassifications out of accumulated other comprehensive loss and into net income (loss): Millions of Dollars Three Months Ended Six Months Ended June 30 June 30 2020 2019 2020 2019 Defined benefit plans $ 8 17 16 30 The above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of $ 2 million and $ 5 million for the three-month periods ended June 30, 2020 and June 30, 2019, respectively, and $ 4 million and $ 10 million for the six-month periods ended June 30, 2020 and June 30, 2019, respectively. See Note 17—Employee Benefit Plans, for additional information.