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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) | 12 Months Ended
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Dec. 31, 2021
Accumulated Other Comprehensive Loss | The following table sets forth the balance in accumulated other comprehensive loss for the periods 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 loss before reclassifications |  | (165,023) |  |  | (40,341) |  |  | (8,635) |  |  | (213,999) |
Amounts reclassified to net income (c) |  | 21,097 |  |  | 14,187 |  |  | 1,266 |  |  | 36,550 |
Other comprehensive loss |  | (143,926) |  |  | (26,154) |  |  | (7,369) |  |  | (177,449) |
December 31, 2020 |  | (377,446) |  |  | (157,635) |  |  | (16,368) |  |  | (551,449) |
Other comprehensive income (loss) before reclassifications |  | (203,868) |  |  | 31,897 |  |  | 3,088 |  |  | (168,883) |
Amounts reclassified to net income (c) |  | 228,999 |  |  | 18,079 |  |  | 1,903 |  |  | 248,981 |
Other comprehensive income |  | 25,131 |  |  | 49,976 |  |  | 4,991 |  |  | 80,098 |
December 31, 2021 |  | $ | (352,315) |  |  | $ | (107,659) |  |  | $ | (11,377) |  |  | $ | (471,351) |
(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 K for retirement and other postretirement benefit plan obligations.
Schedule of Accumulated Other Comprehensive Loss for Risk-Management Assets/Liabilities [Table Text Block] | The following table sets forth information about the balance of accumulated other comprehensive loss at December 31, 2021, representing unrealized 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 36 months (b) |  | $ | (76,942) |
Settled interest-rate swaps to be recognized over the life of the long-term, fixed-rate debt (c) |  | (163,320) |
Interest-rate swaps with future settlement dates expected to be amortized over the life of long-term debt |  | (112,053) |
Accumulated other comprehensive loss at December 31, 2021 |  | $ | (352,315) |
(a) - All amounts are presented net of tax. (b) - Based on commodity prices on December 31, 2021, we expect net losses of $76.8 million, net of tax, will be reclassified into earnings during the next 12 months. (c) - We expect net losses of $27.1 million, net of tax, will be reclassified into earnings during the next 12 months.

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