| 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 |
|---|
| Net Income | 167 | 169 | 182 | 194 | 194 | 198 | 213 | 228 | 233 | 238 | 246 | 260 | 262 |
|---|
| Depreciation and amortization | 125 | 129 | 134 | 137 | 143 | 147 | 166 | 169 | 174 | 176 | 179 | 174 | 200 |
|---|
| Deferred Income Taxes and Tax Credits | -53 | 26 | 66 | 19 | 39 | 36 | 33 | 11 | 22 | 25 | 24 | -1 | 40 |
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| Changes in regulatory assets and liabilities | -68 | -53 | 26 | -32 | -14 | 6 | -57 | -48 | 4 | 36 | 34 | 80 | 5 |
|---|
| Pension and postretirement benefit plan expense | 45 | 45 | 46 | 45 | 30 | 30 | 29 | 32 | 28 | 29 | 34 | 29 | 27 |
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| Contributions to pension and postretirement benefit plans | 22 | 48 | 33 | 34 | 43 | 45 | 47 | 46 | 49 | 45 | 44 | 44 | 55 |
|---|
| Income (Loss) from Equity Method Investments | 1 | -0 | 12 | 12 | 11 | 13 | 11 | 12 | 12 | 12 | 11 | 12 | 12 |
|---|
| Proceeds from Equity Method Investment, Distribution | 3 | 19 | 18 | 5 | 12 | 26 | 25 | 31 | 22 | 14 | 12 | 12 | 3 |
|---|
| Allowance for equity funds used during construction | 25 | 22 | 15 | 18 | 22 | 22 | 21 | 24 | 27 | 30 | 32 | 37 | 43 |
|---|
| Other non-cash adjustments to net income, net | -4 | -6 | -3 | -5 | -3 | -5 | -8 | -9 | -8 | -10 | -9 | -15 | -8 |
|---|
| Accounts receivable | - | - | 30 | -20 | -5 | 3 | -4 | -1 | 6 | 0 | 7 | 82 | 18 |
|---|
| Accounts payable and other accrued liabilities | 5 | 11 | -1 | 6 | 2 | 13 | -17 | 30 | -10 | -0 | 18 | -2 | -3 |
|---|
| Taxes accrued/receivable | 15 | -1 | 5 | -14 | 1 | 1 | 4 | 5 | 1 | 9 | -18 | -12 | -53 |
|---|
| Other current assets | 20 | 4 | 12 | 13 | 15 | 11 | -3 | -13 | 9 | -5 | 8 | -113 | 81 |
|---|
| Other current liabilities | 2 | -8 | 2 | 2 | 0 | -3 | 1 | 7 | -1 | 8 | 3 | -5 | -13 |
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| Other assets | - | - | - | - | - | - | - | - | - | - | 11 | -23 | -11 |
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| Net cash provided by operating activities | 310 | 249 | 306 | 364 | 353 | 348 | 438 | 492 | 367 | 388 | 363 | 351 | 267 |
|---|
| Additions to property, plant and equipment | 338 | 240 | 235 | 274 | 294 | 297 | 285 | 278 | 279 | 311 | 300 | 433 | 611 |
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| Payments received from transmission project joint funding partners | - | - | - | - | 11 | 8 | 6 | 22 | 2 | 3 | 6 | 18 | 27 |
|---|
| Payments to Acquire Partners Interest in Real Estate Partnership, Net of Cash Acquired | 2 | 0 | - | - | - | - | - | - | - | 14 | 15 | 10 | 3 |
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| Proceeds from Equity Method Investment, Distribution, Return of Capital | - | - | - | - | - | - | - | - | - | - | 14 | 8 | - |
|---|
| Payments to Acquire Equity Securities, FV-NI | - | - | - | - | - | - | - | - | - | - | 17 | 46 | 12 |
|---|
| Debt Securities, Held-to-Maturity, Purchase | - | - | - | - | - | - | - | - | - | - | - | -31 | -2 |
|---|
| Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment | - | - | - | - | - | - | - | - | - | - | 11 | 64 | 9 |
|---|
| Payments to Acquire Short-term Investments | - | - | - | - | - | - | - | - | - | 25 | 25 | 25 | - |
|---|
| Proceeds from Maturities, Prepayments and Calls of Short-term Investments | - | - | - | - | - | - | - | - | - | - | 50 | 25 | - |
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| Other | -3 | -0 | -3 | -5 | -1 | -1 | -2 | -4 | -2 | -7 | -2 | -5 | -2 |
|---|
| Net cash used in investing activities | -332 | -244 | -237 | -272 | -292 | -297 | -283 | -258 | -280 | -347 | -274 | -424 | -590 |
|---|
| Issuance of long-term debt | - | 150 | 150 | - | 250 | 120 | - | 220 | 166 | 310 | - | 198 | 872 |
|---|
| Premium on issuance of long-term debt | - | - | - | - | - | - | - | - | - | 31 | - | - | -7 |
|---|
| Retirement of long-term debt | 121 | 101 | 71 | 1 | 121 | 101 | 1 | 130 | 166 | 175 | - | 4 | 225 |
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| Dividends on common stock | 60 | 69 | 79 | 88 | 97 | 105 | 113 | 121 | 130 | 138 | 146 | 154 | 164 |
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| Acquisition of treasury stock | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 3 | 3 | 3 |
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| Make-whole premium on retirement of long-term debt | - | - | - | - | 18 | 14 | - | 5 | - | 3 | - | - | - |
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| Other | -1 | -5 | -1 | 2 | -3 | -2 | -0 | -3 | -3 | -4 | -0 | -1 | -0 |
|---|
| Other | -1 | -5 | -1 | 2 | -3 | -2 | -0 | -3 | -3 | -4 | -0 | -1 | -0 |
|---|
| Net cash used in financing activities | -179 | -7 | -17 | -113 | -3 | -104 | -140 | -43 | -136 | 17 | -149 | 35 | 473 |
|---|
| Net cash used in financing activities | -179 | -7 | -17 | -113 | -3 | -104 | -140 | -43 | -136 | 17 | -149 | 35 | 473 |
|---|
| Net increase (decrease) in cash and cash equivalents | - | - | - | - | - | - | - | - | - | - | -60 | -38 | 150 |
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| Income taxes | -12 | 1 | 1 | 11 | 9 | 3 | 15 | 5 | 14 | 10 | 34 | 46 | 6 |
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| Interest (net of amount capitalized) | 71 | 71 | 78 | 77 | 79 | 78 | 80 | 81 | 85 | 81 | 83 | 86 | 98 |
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| Capital Expenditures Incurred but Not yet Paid | 26 | 27 | 24 | 28 | 24 | 35 | 33 | 30 | 39 | 45 | 54 | 84 | 185 |
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