EMPLOYEE BENEFIT PLANS (Tables)
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12 Months Ended |
Dec. 31, 2021 |
Defined Benefit Plans and Other Postemployment Benefit Plans Table Text Block [Line Items] |
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Defined Benefit Plan, Assumptions [Table Text Block] |
Actuarial Assumptions - The following table sets forth the weighted-average assumptions used to determine benefit obligations for pension and postemployment benefits for the periods indicated: | | | | | | | | | | | | | | | | | December 31, | | | 2021 | | 2020 | Discount rate - pension plans | | 3.05% | | 2.80% | Discount rate - other postemployment plans | | 3.00% | | 2.70% | Compensation increase rate | | 3.10% - 5.00% | | 3.10% - 3.90% | | | | | |
The following table sets forth the weighted-average assumptions used by us to determine the periodic benefit costs for the periods indicated: | | | | | | | | | | | | | | | | | | | | | | | | | | | Years Ended December 31, | | | | | 2021 | | 2020 | | 2019 | Discount rate - pension plans | | | | 2.80% | | 3.50% | | 4.40% | Discount rate - other postemployment plans | | | | 2.70% | | 3.40% | | 4.40% | Expected long-term return on plan assets - pension plans | | | | 7.15% | | 7.20% | | 7.20% | Expected long-term return on plan assets - other postemployment plans | | | | 7.50% | | 7.65% | | 7.35% | Compensation increase rate | | | | 3.10% - 3.90% | | 3.10% - 4.00% | | 3.20% - 4.00% | | | | | | | | | |
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Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
The following table sets forth our defined benefit pension and other postemployment benefit plans, benefit obligations and fair value of plan assets for the periods indicated: | | | | | | | | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Postemployment Benefits | | December 31, | | December 31, | | 2021 | | 2020 | | 2021 | | 2020 | Changes in Benefit Obligation | (Thousands of dollars) | | | Benefit obligation, beginning of period | $ | 1,077,641 | | | $ | 1,001,368 | | | $ | 239,530 | | | $ | 230,490 | | Service cost | 13,811 | | | 12,869 | | | 1,587 | | | 1,692 | | Interest cost | 29,458 | | | 34,179 | | | 6,251 | | | 7,557 | | Plan participants’ contributions | — | | | — | | | 3,226 | | | 3,500 | | Actuarial loss (gain) | (19,587) | | | 91,566 | | | (8,894) | | | 14,013 | | Benefits paid | (51,333) | | | (62,341) | | | (18,894) | | | (17,722) | | | | | | | | | | | | | | | | | | | | | | | | | | Benefit obligation, end of period | 1,049,990 | | | 1,077,641 | | | 222,806 | | | 239,530 | | | | | | | | | | Change in Plan Assets | | | | | | | | Fair value of plan assets, beginning of period | 987,583 | | | 907,974 | | | 230,895 | | | 207,182 | | Actual return (loss) on plan assets | 75,999 | | | 140,939 | | | 14,786 | | | 35,837 | | Employer contributions | 995 | | | 1,011 | | | 1,981 | | | 2,098 | | Plan participants’ contributions | — | | | — | | | 3,226 | | | 3,500 | | Benefits paid | (51,333) | | | (62,341) | | | (18,894) | | | (17,722) | | Settlements | — | | | — | | | — | | | — | | Fair value of assets, end of period | 1,013,244 | | | 987,583 | | | 231,994 | | | 230,895 | | Benefit Asset (Obligation), net at December 31 | $ | (36,746) | | | $ | (90,058) | | | $ | 9,188 | | | $ | (8,635) | | | | | | | | | | Other noncurrent assets | — | | | — | | | 9,188 | | | — | | Current liabilities | (1,521) | | | (1,056) | | | — | | | — | | Noncurrent liabilities | (35,225) | | | (89,002) | | | — | | | (8,635) | | Benefit Asset (Obligation), net at December 31 | $ | (36,746) | | | $ | (90,058) | | | $ | 9,188 | | | $ | (8,635) | |
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Schedule of Net Benefit Costs [Table Text Block] |
Components of Net Periodic Benefit Cost - The following tables set forth the components of net periodic benefit cost, prior to regulatory deferrals, for our defined benefit pension and other postemployment benefit plans for the period indicated:
| | | | | | | | | | | | | | | | | | | Pension Benefits | | Year Ended December 31, | | 2021 | | 2020 | | 2019 | | (Thousands of dollars) | Components of net periodic benefit cost | | | | | | Service cost | $ | 13,811 | | | $ | 12,869 | | | $ | 12,030 | | Interest cost (a) | 29,458 | | | 34,179 | | | 40,670 | | Expected return on assets (a) | (62,382) | | | (61,119) | | | (61,939) | | Amortization of net loss (a) | 45,523 | | | 42,319 | | | 33,039 | | Net periodic benefit cost | $ | 26,410 | | | $ | 28,248 | | | $ | 23,800 | |
(a) These amounts, net of any amounts capitalized as a regulatory asset since adoption of ASU 2017-07 on January 1, 2018, have been recognized as other income (expense), net in the Consolidated Statements of Income. See Note 15 for additional detail of our other income (expense), net. | | | | | | | | | | | | | | | | | | | Other Postemployment Benefits | | Year Ended December 31, | | 2021 | | 2020 | | 2019 | | (Thousands of dollars) | Components of net periodic benefit cost | | | | | | Service cost | $ | 1,587 | | | $ | 1,692 | | | $ | 1,734 | | Interest cost (a) | 6,251 | | | 7,557 | | | 9,318 | | Expected return on assets (a) | (16,807) | | | (15,469) | | | (12,586) | | Amortization of unrecognized prior service cost (a) | (279) | | | (117) | | | (673) | | Amortization of net loss (a) | 373 | | | 173 | | | 2,244 | | | | | | | | Net periodic benefit cost (credit) | $ | (8,875) | | | $ | (6,164) | | | $ | 37 | |
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Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] |
Other Comprehensive Income (Loss) - The following table sets forth the amounts recognized in other comprehensive income (loss), net of regulatory deferrals, related to our defined benefit pension benefits for the period indicated:
| | | | | | | | | | | | | | | | | | | Pension Benefits | | Year Ended December 31, | | 2021 | | 2020 | | 2019 | | (Thousands of dollars) | Net gain (loss) arising during the period | $ | 67 | | | $ | (2,519) | | | $ | (2,766) | | Amortization of loss | 1,562 | | | 1,192 | | | 852 | | Deferred income taxes | (379) | | | 289 | | | 479 | | Total recognized in other comprehensive income (loss) | $ | 1,250 | | | $ | (1,038) | | | $ | (1,435) | |
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Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block] |
The tables below set forth the amounts in accumulated other comprehensive loss that had not yet been recognized as components of net periodic benefit expense for the periods indicated:
| | | | | | | | | | | | | Pension Benefits | | December 31, | | 2021 | | 2020 | | (Thousands of dollars) | Accumulated loss | $ | (272,332) | | | $ | (351,059) | | Accumulated other comprehensive loss before regulatory assets | (272,332) | | | (351,059) | | Regulatory asset for regulated entities | 264,027 | | | 341,125 | | Accumulated other comprehensive loss after regulatory assets | (8,305) | | | (9,934) | | Deferred income taxes | 1,778 | | | 2,157 | | Accumulated other comprehensive loss, net of tax | $ | (6,527) | | | $ | (7,777) | |
| | | | | | | | | | | | | Other Postemployment Benefits | | December 31, | | 2021 | | 2020 | | (Thousands of dollars) | Prior service credit | $ | (194) | | | $ | 85 | | Accumulated loss | (5,887) | | | (13,134) | | Accumulated other comprehensive loss before regulatory assets | $ | (6,081) | | | $ | (13,049) | | Regulatory asset for regulated entities | 6,081 | | | 13,049 | | Accumulated other comprehensive loss after regulatory assets | $ | — | | | $ | — | | | | | |
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Schedule of Health Care Cost Trend Rates [Table Text Block] |
Health Care Cost Trend Rates - The following table sets forth the assumed health care cost-trend rates for the periods indicated:
| | | | | | | | | | | | | 2021 | | 2020 | Health care cost-trend rate assumed for next year | 6.00% | | 6.25% | Rate to which the cost-trend rate is assumed to decline (the ultimate trend rate) | 4.50% | | 4.50% | Year that the rate reaches the ultimate trend rate | 2028 | | 2026 |
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Schedule of Allocation of Plan Assets [Table Text Block] |
Plan Assets - Our investment strategy is to invest plan assets in accordance with sound investment practices that emphasize long-term fundamentals. The goal of this strategy is to maximize investment returns while managing risk in order to meet the plan’s current and projected financial obligations. To achieve this strategy, we have established a liability-driven investment strategy to change the allocations as the funded status of the defined benefit pension plan increases. The plan’s investments include a diverse blend of various domestic and international equities, investment-grade debt securities which mirror the cash flows of our liability, insurance contracts and alternative investments. The current target allocation for the assets of our defined benefit pension plan is as follows: | | | | | | | | Investment-grade bonds | 60.0 | % | U.S. large-cap equities | 14.0 | % | Alternative investments | 10.0 | % | Developed foreign large-cap equities | 7.0 | % | Mid-cap equities | 5.0 | % | Emerging markets equities | 1.0 | % | Small-cap equities | 3.0 | % | Total | 100 | % |
As part of our risk management for the plans, minimums and maximums have been set for each of the asset classes listed above. All investment managers for the plan are subject to certain restrictions on the securities they purchase and, with the exception of indexing purposes, are prohibited from owning our stock.
The current target allocation for the assets of our other postemployment benefits plan is 65 percent fixed income securities and 35 percent equity securities. The following tables set forth our pension benefits and other postemployment benefits plan assets by fair value category as of the measurement date:
| | | | | | | | | | | | | | | | Pension Benefits | | December 31, 2021 | Asset Category | Level 1 | Level 2 | Level 3 | Total | | (Thousands of dollars) | Investments: | | | | | Equity securities (a) | $ | 223,871 | | $ | — | | $ | — | | $ | 223,871 | | Government obligations | — | | 205,741 | | — | | 205,741 | | Corporate obligations (b) | — | | 440,445 | | — | | 440,445 | | Cash and money market funds (c) | 3,864 | | 30,546 | | — | | 34,410 | | Insurance contracts and group annuity contracts | — | | — | | 17,301 | | 17,301 | | Other investments (d) | — | | 20 | | 91,456 | | 91,476 | | Total assets | $ | 227,735 | | $ | 676,752 | | $ | 108,757 | | $ | 1,013,244 | |
(a) - This category represents securities of the various market sectors from diverse industries. (b) - This category represents bonds from diverse industries. (c) - This category primarily represents money market funds. (d) - This category represents alternative investments such as hedge funds and other financial instruments.
| | | | | | | | | | | | | | | | Pension Benefits | | December 31, 2020 | Asset Category | Level 1 | Level 2 | Level 3 | Total | | (Thousands of dollars) | Investments: | | | | | Equity securities (a) | $ | 392,639 | | $ | 35,454 | | $ | — | | $ | 428,093 | | Government obligations | — | | 78,080 | | — | | 78,080 | | Corporate obligations (b) | — | | 343,118 | | — | | 343,118 | | Cash and money market funds (c) | 1,589 | | 23,311 | | — | | 24,900 | | Insurance contracts and group annuity contracts | — | | — | | 24,603 | | 24,603 | | Other investments (d) | — | | 1,155 | | 87,634 | | 88,789 | | Total assets | $ | 394,228 | | $ | 481,118 | | $ | 112,237 | | $ | 987,583 | |
(a) - This category represents securities of the various market sectors from diverse industries. (b) - This category represents bonds from diverse industries. (c) - This category primarily represents money market funds. (d) - This category represents alternative investments such as hedge funds and other financial instruments. | | | | | | | | | | | | | | | | Other Postemployment Benefits | | December 31, 2021 | Asset Category | Level 1 | Level 2 | Level 3 | Total | | (Thousands of dollars) | Investments: | | | | | Equity securities (a) | $ | 25,577 | | $ | — | | $ | — | | $ | 25,577 | | Government obligations | — | | 41,366 | | — | | 41,366 | | Corporate obligations (b) | — | | 41,601 | | — | | 41,601 | | Cash and money market funds (c) | 542 | | 12,990 | | — | | 13,532 | | Insurance contracts and group annuity contracts (d) | — | | 109,918 | | — | | 109,918 | | Total assets | $ | 26,119 | | $ | 205,875 | | $ | — | | $ | 231,994 | |
(a) - This category represents securities of the various market sectors from diverse industries. (b) - This category represents bonds from diverse industries. (c) - This category primarily represents money market funds. (d) - This category includes equity securities and bonds held in a captive insurance product.
| | | | | | | | | | | | | | | | Other Postemployment Benefits | | December 31, 2020 | Asset Category | Level 1 | Level 2 | Level 3 | Total | | (Thousands of dollars) | Investments: | | | | | Equity securities (a) | $ | 73,578 | | $ | — | | $ | — | | $ | 73,578 | | Government obligations | — | | — | | — | | — | | Corporate obligations (b) | — | | 39,115 | | — | | 39,115 | | Cash and money market funds (c) | 52 | | 8,071 | | — | | 8,123 | | Insurance contracts and group annuity contracts (d) | — | | 110,079 | | — | | 110,079 | | Total assets | $ | 73,630 | | $ | 157,265 | | $ | — | | $ | 230,895 | |
(a) - This category represents securities of the various market sectors from diverse industries. (b) - This category represents bonds from diverse industries. (c) - This category primarily represents money market funds. (d) - This category includes equity securities and bonds held in a captive insurance product.
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Schedule of Employee Pension Plans Investments at Fair Value |
The following tables set forth additional information regarding commitments and redemption limitations of these other investments at the periods indicated: | | | | | | | | | | | | | | | | December 31, 2021 | | Fair Value | Unfunded Commitments | Redemption Frequency | Redemption Notice Period | | (in thousands) | | (in days) | Grosvenor Registered Multi Limited Partnership | $ | 44,818 | | $ | — | | quarterly | 65 | K2 Institutional Investors II Limited Partnership | $ | 46,638 | | $ | — | | quarterly | 91 |
| | | | | | | | | | | | | | | | December 31, 2020 | | Fair Value | Unfunded Commitments | Redemption Frequency | Redemption Notice Period | | (in thousands) | | (in days) | Grosvenor Registered Multi Limited Partnership | $ | 42,632 | | $ | — | | quarterly | 65 | K2 Institutional Investors II Limited Partnership | $ | 45,002 | | $ | — | | quarterly | 91 |
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Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block] |
The following table sets forth the reconciliation of Level 3 fair value measurements of our pension plans for the periods indicated:
| | | | | | | | | | | | | | | | | | | Pension Benefits | | Insurance Contracts | | Other Investments | | Total | | (Thousands of dollars) | January 1, 2020 | $ | 25,988 | | | $ | 81,793 | | | $ | 107,781 | | Unrealized gains | 1,764 | | | 4,849 | | | 6,613 | | Purchases | — | | | 992 | | | 992 | | | | | | | | Settlements | (3,149) | | | — | | | (3,149) | | December 31, 2020 | $ | 24,603 | | | $ | 87,634 | | | $ | 112,237 | | Unrealized gains | — | | | 1,625 | | | 1,625 | | Unrealized losses | (3,368) | | | — | | | (3,368) | | Purchases | — | | | 2,197 | | | 2,197 | | Settlements | (3,934) | | | — | | | (3,934) | | December 31, 2021 | $ | 17,301 | | | $ | 91,456 | | | $ | 108,757 | |
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Schedule of Expected Benefit Payments [Table Text Block] |
The following table sets forth the pension benefits and other postemployment benefits payments expected to be paid in 2022-2031: | | | | | | | | | | | | | Pension Benefits | | Other Postemployment Benefits | Benefits to be paid in: | (Thousands of dollars) | 2022 | $ | 52,936 | | | $ | 15,744 | | 2023 | $ | 53,745 | | | $ | 15,571 | | 2024 | $ | 54,440 | | | $ | 15,184 | | 2025 | $ | 55,075 | | | $ | 14,940 | | 2026 | $ | 55,852 | | | $ | 14,580 | | 2027 through 2031 | $ | 283,344 | | | $ | 67,566 | |
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