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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Notes) | 9 Months Ended
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Sep. 30, 2020
ACCUMULATED OTHER COMPREHENSIVE LOSS | ACCUMULATED OTHER COMPREHENSIVE LOSS The following table sets forth the balance in accumulated other comprehensive loss for the period indicated:
|  | Risk- Management Assets/Liabilities (a) |  | Retirement and Other Postretirement Benefit Plan Obligations (a) (b) |  | Risk- Management Assets/Liabilities of Unconsolidated Affiliates (a) |  | Accumulated Other Comprehensive Loss (a)
|  | (Thousands of dollars)
January 1, 2020 |  | $ | (233,520) |  |  | $ | (131,481) |  |  | $ | (8,999) |  |  | $ | (374,000) |
Other comprehensive income (loss) before reclassifications |  | (168,421) |  |  | 59 |  |  | (10,893) |  |  | (179,255) |
Amounts reclassified to net income (c) |  | 11,210 |  |  | 10,626 |  |  | 801 |  |  | 22,637 |
Other comprehensive income (loss) |  | (157,211) |  |  | 10,685 |  |  | (10,092) |  |  | (156,618) |
September 30, 2020 |  | $ | (390,731) |  |  | $ | (120,796) |  |  | $ | (19,091) |  |  | $ | (530,618) |
(a) - All amounts are presented net of tax. (b) - Includes amounts related to supplemental executive retirement plan. (c) - See Note C for details of amounts reclassified to net income for risk-management assets/liabilities and Note H for retirement and other postretirement benefit plan obligations. The following table sets forth information about the balance of accumulated other comprehensive loss at September 30, 2020, representing unrealized gains (losses) related to risk-management assets and liabilities:
|  | Risk- Management Assets/Liabilities (a)
|  | (Thousands of dollars)
Commodity derivative instruments expected to be realized within the next 15 months (b) |  | $ | (10,988) |
Settled interest-rate swaps to be recognized over the life of the long-term, fixed-rate debt (c) |  | (201,110) |
Interest-rate swaps with future settlement dates expected to be amortized over the life of long-term debt |  | (178,633) |
Accumulated other comprehensive loss at September 30, 2020 |  | $ | (390,731) |
(a) - All amounts are presented net of tax. (b) - Based on September 30, 2020, commodity prices, we expect $8.4 million in net losses, net of tax, over the next 12 months and $2.6 million in net losses, net of tax, thereafter. (c) - We expect net losses of $30.3 million, net of tax, will be reclassified into earnings during the next 12 months. The remaining amounts in accumulated other comprehensive loss relate primarily to our retirement and other postretirement benefit plan obligations, which are expected to be amortized over the average remaining service period of employees participating in these plans.

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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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