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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Notes)
 12 Months Ended
Dec. 31, 2020
ACCUMULATED OTHER COMPREHENSIVE LOSS 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, 2019$(64,660)$(121,785)$(1,794)$(188,239)
Other comprehensive loss before reclassifications(147,803)(19,490)(7,275)(174,568)
Amounts reclassified to net income (c)(21,057)9,794 70 (11,193)
Other comprehensive loss(168,860)(9,696)(7,205)(185,761)
December 31, 2019(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)
(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.

The following table sets forth information about the balance of accumulated other comprehensive loss at December 31, 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 24 months (b)$(27,303)
Settled interest-rate swaps to be recognized over the life of the long-term, fixed-rate debt (c)
(193,519)
Interest-rate swaps with future settlement dates expected to be amortized over the life of long-term debt
(156,624)
Accumulated other comprehensive loss at December 31, 2020$(377,446)
(a) - All amounts are presented net of tax.
(b) - Based on December 31, 2020, commodity prices, we expect $27.0 million in net losses, net of tax, over the next 12 months and $0.3 million in net losses, net of tax, thereafter.
(c) - We expect net losses of $30.5 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.