| Accounts receivable | assets | 1.28B | |
| Accounts receivable, net | assets | 1.24B | |
| Accounts receivable, allowance for credit loss, current | assets | 46.10M | |
| Public utilities, property, plant and equipment, plant in service | assets | 39.04B | |
| Regulatory assets, noncurrent | assets | 2.30B | |
| Goodwill | assets | 1.49B | |
| Deferred charges and other | assets | 695.60M | |
| Regulatory asset, current | assets | 380.60M | |
| Prepaid expense, current | assets | 209.10M | |
| Inventory, raw materials and supplies, gross | assets | 193.80M | |
| Available-for-sale debt securities (amortized cost of $157.8 and $145.8) | assets | 156.70M | |
| Other long-term investments | assets | 116.30M | |
| Other assets, current | assets | 102.50M | |
| Energy related inventory, natural gas in storage | assets | 88.40M | |
| Cash and cash equivalent | assets | 71.90M | |
| Exchange gas receivable | assets | 69.60M | |
| Restricted cash | assets | 25.20M | |
| Energy related inventory, coal | assets | 21.30M | |
| Income taxes receivable | assets | 11.50M | |
| Unconsolidated affiliates | assets | 8.20M | |
| Public utilities, property, plant and equipment, net | assets | 29.43B | |
| Public utilities, property, plant and equipment, accumulated depreciation | assets | 9.62B | |
| Other assets, noncurrent | assets | 4.48B | |
| Current assets | assets | 2.41B | |
| Total investments and other assets | assets | 281.20M | |
| Total assets | assets | 36.60B | |
| Total capitalization | liabilities | 27.39B | |
| Other liabilities | liabilities | 5.49B | |
| Current liabilities | liabilities | 3.73B | |
| Long-term debt and lease obligation | liabilities | 15.46B | |
| Total stockholders’ equity | liabilities | 11.93B | |
| Deferred income taxes | liabilities | 2.59B | |
| Regulatory liability, noncurrent | liabilities | 1.58B | |
| Asset retirement obligations | liabilities | 793.40M | |
| Finance lease obligations | liabilities | 289.60M | |
| Liability, pension and other postretirement and postemployment benefits, noncurrent | liabilities | 157.90M | |
| Accrued insurance liabilities | liabilities | 79.60M | |
| Short-term debt | liabilities | 1.29B | |
| Accounts payable, current | liabilities | 999.30M | |
| Taxes payable, current | liabilities | 240.80M | |
| Interest payable, current | liabilities | 218.80M | |
| Regulatory liability, current | liabilities | 204.30M | |
| Other liabilities, current | liabilities | 200.40M | |
| Accrued compensation and employee benefits | liabilities | 153.50M | |
| Customer deposits and credits | liabilities | 148.10M | |
| Dividends payable - common stock | liabilities | 147.40M | |
| Exchange gas payable | liabilities | 56.50M | |
| Asset retirement obligation | liabilities | 49.90M | |
| Long-term debt and lease obligation, current | liabilities | 16.80M | |
| Noncontrolling interest in consolidated subsidiaries | liabilities | 2.27B | |
| Treasury stock, value | equity | 99.90M | |
| Retained earnings (accumulated deficit) | equity | 96.60M | |
| Accumulated other comprehensive income (loss), net of tax | equity | 9.20M | |
| Shares outstanding | equity | 9.66B | |
| Aggregate | equity | 9.86B | |
| Additional paid in capital, common stock | equity | 9.86B | |
| Common stock, value, issued | equity | 4.80M | |