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Business Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2021
Segment Reporting Information, Additional Information [Abstract] |
Segment information included in Consolidated Balance Sheets | Segment information was as follows (in thousands):
Total Assets (net of intercompany eliminations) as of December 31, | 2021 | 2020
Electric Utilities | $ | 3,796,662 |  | $ | 3,602,233 |
Gas Utilities | 5,246,370 |  | 4,376,204 |
Corporate and Other | 88,864 |  | 110,349 |
Total assets | $ | 9,131,896 |  | $ | 8,088,786 |
Capital Expenditures (a) for the years ended December 31, | 2021 | 2020 | 2019
Electric Utilities | $ | 285,770 |  | $ | 288,683 |  | $ | 316,687 |
Gas Utilities | 383,320 |  | 449,209 |  | 512,366 |
Corporate and Other | 10,500 |  | 17,500 |  | 20,702 |
Total capital expenditures | $ | 679,590 |  | $ | 755,392 |  | $ | 849,755 |
____________________ (a) Includes accruals for property, plant and equipment as disclosed in the Supplemental Cash Flow Information to the Consolidated Statement of Cash Flows.
Segment information included in Consolidated Statements of Income |
| Consolidating Income Statement
Year ended December 31, 2021 | Electric Utilities | Gas Utilities | Corporate | Inter-Company Eliminations | Total
Revenue - |  |  |  |  |
Contracts with customers | $ | 825,404 |  | $ | 1,105,430 |  | $ | — |  | $ | — |  | $ | 1,930,834 |
Other revenues | 5,336 |  | 12,932 |  | — |  | — |  | 18,268 |
| 830,740 |  | 1,118,362 |  | — |  | — |  | 1,949,102 |
Inter-company operating revenue - |  |  |  |  |
Contracts with customers | 11,518 |  | 6,110 |  | 196 |  | (17,824) |  | — |
Other revenues | — |  | 393 |  | 356,151 |  | (356,544) |  | — |
| 11,518 |  | 6,503 |  | 356,347 |  | (374,368) |  | — |
Total revenue | 842,258 |  | 1,124,865 |  | 356,347 |  | (374,368) |  | 1,949,102 |
Fuel, purchased power and cost of natural gas sold | 248,018 |  | 494,738 |  | 96 |  | (918) |  | 741,934 |
Operations and maintenance, including taxes | 260,036 |  | 314,810 |  | 293,265 |  | (306,325) |  | 561,786 |
Depreciation, depletion and amortization | 131,528 |  | 104,160 |  | 26,838 |  | (26,573) |  | 235,953 |
Operating income (loss) | $ | 202,676 |  | $ | 211,157 |  | $ | 36,148 |  | $ | (40,552) |  | $ | 409,429 |
Interest expense, net |  |  |  |  | (152,404) |
Impairment of investment |  |  |  |  | — |
Other income (expense), net |  |  |  |  | 1,404 |
Income tax benefit (expense) |  |  |  |  | (7,169) |
Net income |  |  |  |  | 251,260 |
Net income attributable to non-controlling interest |  |  |  |  | (14,516) |
Net income available for common stock |  |  |  |  | $ | 236,744 |
| Consolidating Income Statement
Year ended December 31, 2020 | Electric Utilities | Gas Utilities | Corporate | Inter-Company Eliminations | Total
Revenue - |  |  |  |  |
Contracts with customers | $ | 721,108 |  | $ | 959,696 |  | $ | — |  | $ | — |  | $ | 1,680,804 |
Other revenues | 6,175 |  | 9,962 |  | — |  | $ | — |  | 16,137 |
| 727,283 |  | 969,658 |  | — |  | — |  | 1,696,941 |
Inter-company operating revenue - |  |  |  |  |
Contracts with customers | 11,574 |  | 4,724 |  | 167 |  | (16,465) |  | — |
Other revenues | — |  | 288 |  | 352,976 |  | (353,264) |  | — |
| 11,574 |  | 5,012 |  | 353,143 |  | (369,729) |  | — |
Total revenue | 738,857 |  | 974,670 |  | 353,143 |  | (369,729) |  | 1,696,941 |
Fuel, purchased power and cost of natural gas sold | 138,572 |  | 354,645 |  | 83 |  | (896) |  | 492,404 |
Operations and maintenance, including taxes | 265,679 |  | 303,577 |  | 284,501 |  | (301,980) |  | 551,777 |
Depreciation, depletion and amortization | 123,632 |  | 100,559 |  | 25,150 |  | (24,884) |  | 224,457 |
Operating income (loss) | 210,974 |  | 215,889 |  | 43,409 |  | (41,969) |  | 428,303 |
Interest expense, net |  |  |  |  | (143,470) |
Impairment of investment |  |  |  |  | (6,859) |
Other income (expense), net |  |  |  |  | (2,293) |
Income tax benefit (expense) |  |  |  |  | (32,918) |
Net income |  |  |  |  | 242,763 |
Net income attributable to non-controlling interest |  |  |  |  | (15,155) |
Net income available for common stock |  |  |  |  | $ | 227,608 |
| Consolidating Income Statement
Year ended December 31, 2019 | Electric Utilities | Gas Utilities | Corporate | Inter-Company Eliminations | Total
Revenue - |  |  |  |  |
Contracts with customers | $ | 719,205 |  | $ | 1,007,187 |  | $ | — |  | $ | — |  | $ | 1,726,392 |
Other revenues | 8,124 |  | 384 |  | — |  | — |  | 8,508 |
| 727,329 |  | 1,007,571 |  | — |  | — |  | 1,734,900 |
Inter-company operating revenue - |  |  |  |  |
Contracts with customers | 12,026 |  | 2,459 |  | 230 |  | (14,715) |  | — |
Other revenues | — |  | — |  | 343,974 |  | (343,974) |  | — |
| 12,026 |  | 2,459 |  | 344,204 |  | (358,689) |  | — |
Total revenue | 739,355 |  | 1,010,030 |  | 344,204 |  | (358,689) |  | 1,734,900 |
Fuel, purchased power and cost of natural gas sold | 145,972 |  | 425,898 |  | 269 |  | (1,310) |  | 570,829 |
Operations and maintenance, including taxes | 259,167 |  | 301,844 |  | 286,800 |  | (298,902) |  | 548,909 |
Depreciation, depletion and amortization | 116,539 |  | 92,317 |  | 22,065 |  | (21,801) |  | 209,120 |
Operating income (loss) | 217,677 |  | 189,971 |  | 35,070 |  | (36,676) |  | 406,042 |
Interest expense, net |  |  |  |  | (137,659) |
Impairment of investment |  |  |  |  | (19,741) |
Other income (expense), net |  |  |  |  | (5,740) |
Income tax benefit (expense) |  |  |  |  | (29,580) |
Net income |  |  |  |  | 213,322 |
Net income attributable to non-controlling interest |  |  |  |  | (14,012) |
Net income available for common stock |  |  |  |  | $ | 199,310 |

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