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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2022
Regulated Operations [Abstract] |
Schedule of Regulatory Assets and Liabilities | We had the following regulatory assets and liabilities as of December 31 (in thousands):
|  | 2022 |  |  | 2021 |
Regulatory assets |  |  |  |  |  |
Winter Storm Uri (a) |  | $ | 347,980 |  |  | $ | 509,025 |
Deferred energy and fuel cost adjustments (b) |  |  | 72,580 |  |  |  | 59,973 |
Deferred gas cost adjustments (b) |  |  | 12,147 |  |  |  | 9,488 |
Gas price derivatives (b) |  |  | 8,793 |  |  |  | 2,584 |
Deferred taxes on AFUDC (b) |  |  | 7,333 |  |  |  | 7,457 |
Employee benefit plans and related deferred taxes (c) |  |  | 89,259 |  |  |  | 88,923 |
Environmental (b) |  |  | 1,343 |  |  |  | 1,385 |
Loss on reacquired debt (b) |  |  | 19,213 |  |  |  | 21,011 |
Deferred taxes on flow-through accounting (b) |  |  | 69,529 |  |  |  | 63,243 |
Decommissioning costs (b) |  |  | 3,472 |  |  |  | 5,961 |
Other regulatory assets (b) |  |  | 21,332 |  |  |  | 27,549 |
Total regulatory assets |  |  | 652,981 |  |  |  | 796,599 |
Less current regulatory assets |  |  | (260,312 | ) |  |  | (270,290 | )
Regulatory assets, non-current |  | $ | 392,669 |  |  | $ | 526,309 |
Regulatory liabilities |  |  |  |  |  |
Deferred energy and gas costs (b) |  | $ | 24,030 |  |  | $ | 6,113 |
Employee benefit plan costs and related deferred taxes (c) |  |  | 34,258 |  |  |  | 32,241 |
Cost of removal (b) |  |  | 175,614 |  |  |  | 179,976 |
Excess deferred income taxes (c) |  |  | 254,833 |  |  |  | 264,042 |
Other regulatory liabilities (c) |  |  | 29,838 |  |  |  | 20,579 |
Total regulatory liabilities |  |  | 518,573 |  |  |  | 502,951 |
Less current regulatory liabilities |  |  | (46,013 | ) |  |  | (17,574 | )
Regulatory liabilities, non-current |  | $ | 472,560 |  |  | $ | 485,377 |
(a) Timing of Winter Storm Uri incremental cost recovery and associated carrying costs vary by jurisdiction. See further information below. (b) Recovery of costs, but we are not allowed a rate of return. (c) In addition to recovery or repayment of costs, we are allowed a return on a portion of this amount or a reduction in rate base.

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