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Accumulated Other Comprehensive Loss
9 Months Ended
Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss
Note 13—Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss in the equity section of our consolidated balance sheet includes:

Millions of Dollars

Defined Benefit
Plans
Unrealized Holding
Loss on
Securities
Foreign
Currency
Translation
 Unrealized Gain on Hedging Activities
Accumulated
Other
Comprehensive
Loss
December 31, 2022$(448)(11)(5,541)— (6,000)
Other comprehensive income (loss)
26  (23)36 39 
September 30, 2023$(422)(11)(5,564)36 (5,961)
The following table summarizes reclassifications out of accumulated other comprehensive loss and into net income:

Millions of Dollars

Three Months Ended
September 30
Nine Months Ended
September 30

2023202220232022
Defined benefit plans
$9 26 22 
The above amounts are included in the computation of net periodic benefit cost and are presented net of tax expense of $2 million and $1 million for the three-month periods ended September 30, 2023 and September 30, 2022, respectively, and $8 million and $6 million for the nine-month periods ended
September 30, 2023 and September 30, 2022, respectively. See Note 15.