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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ACCUMULATED OTHER COMPREHENSIVE INCOME (Notes) | 9 Months Ended
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Sep. 30, 2019
ACCUMULATED OTHER COMPREHENSIVE INCOME (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, 2019 |  | $ | (64,660 | ) |  | $ | (121,785 | ) |  | $ | (1,794 | ) |  | $ | (188,239 | )
Other comprehensive loss before reclassifications |  | (199,795 | ) |  | (63 | ) |  | (10,567 | ) |  | (210,425 | )
Amounts reclassified to net income |  | (29,748 | ) |  | 7,334 |  |  | (26 | ) |  | (22,440 | )
Other comprehensive income (loss) |  | (229,543 | ) |  | 7,271 |  |  | (10,593 | ) |  | (232,865 | )
September 30, 2019 |  | $ | (294,203 | ) |  | $ | (114,514 | ) |  | $ | (12,387 | ) |  | $ | (421,104 | )
(a) - All amounts are presented net of tax. (b) - Includes amounts related to supplemental executive retirement plan. The following table sets forth information about the balance of accumulated other comprehensive loss at September 30, 2019, 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 27 months (b) |  | $ | 30,258 |
Settled interest-rate swaps to be recognized over the life of the long-term, fixed-rate debt (c) |  | (111,275 | )
Interest-rate swaps with future settlement dates expected to be amortized over the life of long-term debt |  | (213,186 | )
Accumulated other comprehensive loss at September 30, 2019 |  | $ | (294,203 | )
(a) - All amounts are presented net of tax. (b) - Based on September 30, 2019, commodity prices, we will realize $27.9 million in net gains, net of tax, over the next 12 months and $2.4 million in net gains, net of tax, thereafter. (c) - Losses of $19.7 million, net of tax, will be reclassified into earnings during the next 12 months as the hedged items affect earnings. 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. The following table sets forth the effect of reclassifications from accumulated other comprehensive loss to net income for the periods indicated:
Details about Accumulated Other Comprehensive Loss Components |  | Three Months Ended |  | Nine Months Ended |  | Affected Line Item in the Consolidated Statements of Income
| September 30, |  | September 30, |
| 2019 |  | 2018 |  | 2019 |  | 2018 |
|  | (Thousands of dollars) |  |
Risk-management assets/liabilities |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 18,528 |  |  | $ | (20,630 | ) |  | $ | 52,624 |  |  | $ | (42,430 | ) |  | Commodity sales revenues/cost of sales and fuel
Interest-rate contracts |  | (6,903 | ) |  | (4,383 | ) |  | (14,222 | ) |  | (13,929 | ) |  | Interest expense
|  | 11,625 |  |  | (25,013 | ) |  | 38,402 |  |  | (56,359 | ) |  | Income before income taxes
|  | (2,673 | ) |  | 5,752 |  |  | (8,654 | ) |  | 12,962 |  |  | Income taxes
|  | $ | 8,952 |  |  | $ | (19,261 | ) |  | $ | 29,748 |  |  | $ | (43,397 | ) |  | Net income
Retirement and other postretirement benefit plan obligations (a) |  |  |  |  |  |  |  |  |  |
Amortization of net loss |  | $ | (3,232 | ) |  | $ | (4,592 | ) |  | $ | (9,696 | ) |  | $ | (13,776 | ) |  | Other income (expense)
Amortization of unrecognized prior service credit |  | 57 |  |  | 415 |  |  | 171 |  |  | 1,245 |  |  | Other income (expense)
|  | (3,175 | ) |  | (4,177 | ) |  | (9,525 | ) |  | (12,531 | ) |  | Income before income taxes
|  | 731 |  |  | 961 |  |  | 2,191 |  |  | 2,882 |  |  | Income taxes
|  | $ | (2,444 | ) |  | $ | (3,216 | ) |  | $ | (7,334 | ) |  | $ | (9,649 | ) |  | Net income
Risk-management assets/liabilities of unconsolidated affiliates |  |  |  |  |  |  |  |  |  |
Interest-rate contracts |  | $ | (59 | ) |  | $ | 52 |  |  | $ | 34 |  |  | $ | 71 |  |  | Equity in net earnings from investments
|  | 13 |  |  | (12 | ) |  | (8 | ) |  | (16 | ) |  | Income taxes
|  | $ | (46 | ) |  | $ | 40 |  |  | $ | 26 |  |  | $ | 55 |  |  | Net income
Total reclassifications for the period |  | $ | 6,462 |  |  | $ | (22,437 | ) |  | $ | 22,440 |  |  | $ | (52,991 | ) |  | Net income
(a) - These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note H for additional detail of our net periodic benefit cost.

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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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Period Type: | duration