| Assets | — | — |
| Current assets | — | — |
| Cash and cash equivalents | 304.49a | 211.97a |
| Accounts receivable, less allowance for doubtful accounts of $255 and $308 | 302.21a | 274.67a |
| Contingent consideration receivable | 0a | 8a |
| Derivative assets | 84.48a | 341.33a |
| Prepaid assets | 12.72a | 18.16a |
| Other current assets | 17.56a | 15.99a |
| Total current assets | 721.46a | 870.12a |
| Derivative assets | 2.62a | 101.64a |
| Natural gas and oil properties, successful efforts method | 11,878.43a | 11,225.48a |
| Accumulated depletion and depreciation | -5,456.73a | -5,107.8a |
| Other property and equipment | 72.77a | 72.64a |
| Accumulated depreciation and amortization | -70.31a | -70.94a |
| Operating lease right-of-use assets | 119.84a | 23.82a |
| Other assets | 79.59a | 88.92a |
| Total assets | 7,347.68a | 7,203.89a |
| Liabilities | — | — |
| Current liabilities | — | — |
| Accounts payable | 133.13a | 110.13a |
| Asset retirement obligations | 1.19a | 2.4a |
| Accrued liabilities | 289.15a | 290.58a |
| Deferred compensation liabilities | 21.65a | 44.15a |
| Accrued interest | 36.92a | 37.26a |
| Derivative liabilities | 9.63a | 0.22a |
| Operating lease liabilities | 87.14a | 11.58a |
| Divestiture contract obligation | 86.99a | 86.76a |
| Current maturities of long-term debt | 608.27a | 0a |
| Total current liabilities | 1,274.07a | 583.09a |
| Senior notes | 1,089.61a | 1,774.23a |
| Deferred tax liabilities | 541.38a | 561.29a |
| Derivative liabilities | 10.49a | 0.11a |
| Deferred compensation liabilities | 65.23a | 72.98a |
| Operating lease liabilities | 35.74a | 16.06a |
| Asset retirement obligations and other liabilities | 137.18a | 119.9a |
| Divestiture contract obligation | 257.32a | 310.69a |
| Total liabilities | 3,411.02a | 3,438.33a |
| Stockholders’ equity | — | — |
| Preferred stock | 0a | 0a |
| Common stock | 2.67a | 2.66a |
| Common stock held in treasury, at cost | -513.94a | -448.68a |
| Additional paid-in capital | 5,927.89a | 5,879.71a |
| Accumulated other comprehensive income | 0.61a | 0.65a |
| Retained deficit | -1,480.58a | -1,668.78a |
| Total stockholders' equity | 3,936.66a | 3,765.55a |
| Total liabilities and stockholders’ equity | 7,347.68a | 7,203.89a |