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Accumulated Other Comprehensive Income | 9 Months Ended
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Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated Other Comprehensive Income |
Note 16—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 Loss on Securities |  | Foreign Currency Translation |  | Accumulated Other Comprehensive Income (Loss)
December 31, 2017 | $ | (400) |  | (58) |  | (5,060) |  | (5,518)
Cumulative effect of adopting ASU No. 2016-01* |  | - |  | 58 |  | - |  | 58
Other comprehensive income (loss) |  | 240 |  | - |  | (222) |  | 18
September 30, 2018 | $ | (160) |  | - |  | (5,282) |  | (5,442)
*See Note 2—Changes in Accounting Principles for additional information.
There were no items within accumulated other comprehensive loss related to noncontrolling interests.
The following table summarizes reclassifications out of accumulated other comprehensive loss:
|  | Millions of Dollars
|  | Three Months Ended |  | Nine Months Ended
|  | September 30 |  | September 30
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Defined benefit plans | $ | 17 |  | 26 |  | 155 |  | 116
The above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of $6 million and $14 million for the three months ended September 30, 2018 and September 30, 2017, respectively, and $43 million and $61 million for the nine-month periods ended September 30, 2018 and September 30, 2017, respectively. See Note 18—Employee Benefit Plans, for additional information.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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