| Revenue | 4,236.7a | 4,946.7a | 4,981.9a |
| Costs and expenses | — | — | — |
| Operating costs and expenses (exclusive of items shown separately below) | -3,420.9a | -3,385.1a | -3,290.8a |
| Depreciation, depletion and amortization | -343a | -321.4a | -317.6a |
| Asset retirement obligation expenses | -48.9a | -50.5a | -49.4a |
| Selling and administrative expenses | -91a | -90.7a | -88.8a |
| Restructuring charges | -4.4a | -3.3a | -2.9a |
| Transaction costs related to business combinations | -10.3a | 0a | 0a |
| Other operating (income) loss | — | — | — |
| Net gain on disposals | -9.8a | -15a | -29.2a |
| Asset impairment | 0a | -2a | -11.2a |
| Provision for NARM and Shoal Creek losses | -3.7a | -40.9a | 0a |
| Shoal Creek insurance recovery | -109.5a | 0a | 0a |
| Income from equity affiliates | -11.5a | -6.9a | -131.2a |
| Operating profit | 445.3a | 1,074.7a | 1,381.6a |
| Interest expense, net of capitalized interest | -46.9a | -59.8a | -140.3a |
| Net loss on early debt extinguishment | 0a | -8.8a | -57.9a |
| Interest income | -71a | -76.8a | -18.4a |
| Net periodic benefit credit, excluding service cost | -40.6a | -41.6a | -49a |
| Net mark-to-market adjustment on actuarially determined liabilities | -6.1a | -0.3a | -27.8a |
| Income from continuing operations before income taxes | 516.1a | 1,124.8a | 1,278.6a |
| Income tax provision (benefit) | 108.8a | 308.8a | -38.8a |
| Income from continuing operations, net of income taxes | 407.3a | 816a | 1,317.4a |
| (Loss) income from discontinued operations, net of income taxes | -3.8a | -0.4a | 1.7a |
| Net income | 403.5a | 815.6a | 1,319.1a |
| Less: Net income attributable to noncontrolling interests | 32.6a | 56a | 22a |
| Net income attributable to common stockholders | 370.9a | 759.6a | 1,297.1a |