| Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 |
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Revenues | - | - | - | - | - | - | - | 398 | 420 | 565 | 574 | 621 | 670 |
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Purchased water | 54 | 66 | 63 | 47 | 61 | 73 | 86 | 97 | 99 | 101 | 98 | 122 | 136 |
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Power | 5 | 6 | 8 | 10 | 6 | 6 | 7 | 6 | 7 | 13 | 14 | 9 | 10 |
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Groundwater extraction charges | 21 | 24 | 38 | 54 | 31 | 32 | 48 | 47 | 44 | 71 | 76 | 56 | 63 |
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Other production expenses | 11 | 11 | 12 | 12 | 12 | 13 | 15 | 18 | 25 | 40 | 41 | 45 | 48 |
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Total production expenses | 92 | 107 | 121 | 123 | 111 | 124 | 157 | 169 | 176 | 226 | 229 | 233 | 256 |
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Administrative and general | 39 | 43 | 44 | 41 | 47 | 48 | 55 | 49 | 66 | 80 | 87 | 95 | 99 |
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Maintenance | 13 | 13 | 14 | 14 | 15 | 17 | 17 | 18 | 21 | 22 | 26 | 31 | 26 |
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Utilities Operating Expense, Taxes | 9 | 10 | 10 | 11 | 12 | 12 | 14 | 15 | 19 | 30 | 31 | 33 | 34 |
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Depreciation and amortization | 31 | 33 | 35 | 38 | 41 | 45 | 48 | 55 | 66 | 89 | 94 | 104 | 106 |
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Gain on sale of nonutility properties | -0 | - | - | - | - | - | 12 | - | -0 | - | 7 | 6 | - |
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Impairment of long-lived asset | - | - | - | - | - | - | - | - | - | - | 2 | - | - |
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Total operating expense | 185 | 206 | 223 | 227 | 225 | 247 | 291 | 324 | 363 | 447 | 463 | 490 | 521 |
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Operating income | 54 | 55 | 53 | 93 | 80 | 93 | 98 | 73 | 57 | 118 | 111 | 131 | 149 |
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Interest on long-term debt and other interest expense | 18 | 19 | 19 | 19 | 21 | 20 | 23 | 24 | 32 | 54 | 54 | 58 | 66 |
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Pension non-service (cost) credit | - | - | - | - | - | - | - | 2 | 3 | 0 | -1 | -5 | 1 |
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Gain (Loss) on Sale of Properties | - | 1 | 1 | 1 | 2 | 10 | 7 | - | 1 | 1 | 3 | - | - |
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Other, net | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 6 | 7 | 4 | 9 |
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Gain on sale of real estate investments | - | - | - | - | - | - | - | - | - | - | 1 | - | - |
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Other, net | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 6 | 7 | 4 | 9 |
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Income before income taxes | 35 | 38 | 37 | 77 | 61 | 86 | 96 | 49 | 32 | 70 | 69 | 82 | 91 |
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Provision for income taxes | 15 | 16 | 14 | 25 | 23 | 34 | 35 | 10 | 8 | 8 | 8 | 8 | 6 |
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Net income | 21 | 22 | 22 | 52 | 38 | 53 | 61 | 39 | 24 | 62 | 60 | 74 | 85 |
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Unrealized gain (loss) on investment, net of taxes of $166 in 2023, $(188) in 2022 and $68 in 2021 | - | - | - | - | - | - | - | - | - | -0 | 0 | -1 | 1 |
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Adjustment to pension benefit plans, net of taxes of $80 in 2023, $793 in 2022 and $264 in 2021 | - | - | - | - | - | - | - | - | - | 1 | -1 | -2 | 0 |
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Comprehensive income | 21 | 22 | 23 | 51 | 38 | 52 | 60 | 39 | 24 | 60 | 61 | 75 | 85 |
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Income before income taxes | 35 | 38 | 37 | 77 | 61 | 86 | 96 | 49 | 32 | 70 | 69 | 82 | 91 |
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Earnings Per Share, Basic | 1.12 | 1.2 | 1.13 | 2.56 | 1.86 | 2.59 | 2.89 | 1.83 | 0.82 | 2.16 | 2.04 | 2.44 | 2.69 |
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Earnings Per Share, Diluted | 1.11 | 1.18 | 1.12 | 2.54 | 1.85 | 2.57 | 2.86 | 1.82 | 0.82 | 2.14 | 2.03 | 2.43 | 2.68 |
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Provision for income taxes | 15 | 16 | 14 | 25 | 23 | 34 | 35 | 10 | 8 | 8 | 8 | 8 | 6 |
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Net income | 21 | 22 | 22 | 52 | 38 | 53 | 61 | 39 | 24 | 62 | 60 | 74 | 85 |
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Unrealized gain (loss) on investment, net of taxes of $166 in 2023, $(188) in 2022 and $68 in 2021 | - | - | - | - | - | - | - | - | - | -0 | 0 | -1 | 1 |
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Adjustment to pension benefit plans, net of taxes of $80 in 2023, $793 in 2022 and $264 in 2021 | - | - | - | - | - | - | - | - | - | 1 | -1 | -2 | 0 |
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Comprehensive income | 21 | 22 | 23 | 51 | 38 | 52 | 60 | 39 | 24 | 60 | 61 | 75 | 85 |
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Comprehensive income | 21 | 22 | 23 | 51 | 38 | 52 | 60 | 39 | 24 | 60 | 61 | 75 | 85 |
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Earnings Per Share, Basic | 1.12 | 1.2 | 1.13 | 2.56 | 1.86 | 2.59 | 2.89 | 1.83 | 0.82 | 2.16 | 2.04 | 2.44 | 2.69 |
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Earnings Per Share, Diluted | 1.11 | 1.18 | 1.12 | 2.54 | 1.85 | 2.57 | 2.86 | 1.82 | 0.82 | 2.14 | 2.03 | 2.43 | 2.68 |
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