| Fiscal period | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|
| Period End Date | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
|---|
| Net revenues- Contracting services | 1,358.56 | 1,289.73 | 873.10 | 674.73 | 733.56 | 751.91 | 739.82 | 581.38 | 487.58 | 695.80 |
| Net revenues- Oil and gas | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net revenues | 1,358.56 | 1,289.73 | 873.10 | 674.73 | 733.56 | 751.91 | 739.82 | 581.38 | 487.58 | 695.80 |
| Cost of sales | 1,139.00 | 1,089.37 | 822.48 | 659.34 | 653.65 | 614.07 | 618.13 | 519.22 | -- | -- |
| Cost of sales- Contracting services | -- | -- | -- | -- | -- | -- | -- | -- | 441.07 | 584.57 |
| Cost of sales- Oil and gas property impairments | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cost of sales- Exploration expense | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cost of sales- Contracting services impairments | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Impairments | -- | -- | -- | -- | -- | -- | -- | -- | -- | 345.01 |
| Cost of sales- Oil and gas | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gross profit | 219.56 | 200.36 | 50.62 | 15.39 | 79.91 | 137.84 | 121.68 | 62.17 | 46.52 | (233.77) |
| Goodwill impairment | -- | -- | 0.00 | 0.00 | 6.69 | -- | -- | -- | 45.11 | 16.40 |
| Selling and administrative expenses | 91.65 | 94.43 | 76.75 | 63.45 | 61.08 | 69.84 | 70.29 | 63.26 | 65.93 | 57.28 |
| Gain on sale of assets | -- | 0.37 | -- | (0.63) | -- | -- | -- | -- | 1.29 | 0.09 |
| Acquisition and integration costs | -- | (0.54) | (2.66) | -- | -- | -- | -- | -- | -- | -- |
| Gain/loss on oil and gas derivative commodity contracts | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Change in fair value of contingent consideration | -- | (42.25) | (16.05) | -- | -- | -- | -- | -- | -- | -- |
| Loss on disposition of assets, net | (0.48) | -- | -- | -- | 0.89 | -- | 0.15 | (0.04) | -- | -- |
| Income (loss) from operations | 127.44 | 63.51 | (44.86) | (48.69) | 13.03 | 68.00 | 51.54 | (1.13) | (63.24) | (307.36) |
| Net interest expense and other | 22.63 | 17.34 | 18.95 | 23.20 | 28.53 | 8.33 | 13.75 | 18.78 | 31.24 | 26.91 |
| Gain on subsidiary equity transaction | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Losses related to convertible senior notes | (20.92) | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Equity in earnings of investments | -- | -- | 8.26 | 0.00 | 0.22 | 1.44 | (3.92) | (2.37) | (2.17) | (124.35) |
| Gain on sale of Cal Dive commonstock | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other, net | (3.92) | (3.59) | (23.33) | (1.49) | 4.72 | 1.17 | (6.32) | (1.43) | 3.51 | (24.31) |
| Gain/loss on early extinguishment of long term debt | -- | (37.28) | -- | (0.14) | 9.24 | (0.02) | (1.18) | (0.40) | -- | -- |
| Other income - oil and gas | -- | -- | -- | -- | -- | -- | 4.63 | 3.74 | 2.76 | 4.76 |
| Gain on repurchase of long-term debt | -- | -- | -- | -- | -- | -- | -- | -- | (3.54) | -- |
| Royalty income and other | 2.10 | 2.21 | 3.69 | 2.87 | 2.71 | 3.31 | -- | -- | -- | -- |
| Pre-Tax Income | 82.06 | 7.51 | (75.18) | (70.64) | 1.38 | 65.56 | 31.00 | (20.37) | (93.92) | (478.17) |
| Foreign | (1.03) | -- | -- | -- | (3.63) | -- | 5.56 | 2.62 | -- | -- |
| Provision for income taxes | 26.43 | 18.35 | 12.60 | (8.96) | (18.70) | 7.86 | 2.40 | (50.42) | (12.47) | (101.19) |
| Current | 15.82 | 6.82 | 8.22 | 6.24 | (14.82) | 4.37 | 4.83 | 4.16 | (27.32) | 1.83 |
| Deferred | -- | 11.53 | 4.39 | (15.20) | (3.88) | 3.49 | (2.43) | (54.59) | 14.85 | (103.02) |
| Domestic | 11.64 | -- | -- | -- | (15.07) | -- | (3.16) | (53.04) | -- | -- |
| Minority Interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (Loss) from Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | (376.98) |
| Discontinued operations, net of tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of change in accounting principle, net | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income (loss), including noncontrolling interests | 55.64 | (10.84) | (87.78) | (61.68) | 20.08 | 57.70 | -- | -- | (81.45) | (376.98) |
| Net income applicable to noncontrolling interests | -- | -- | -- | (0.15) | (2.09) | (0.22) | -- | -- | 0.00 | 0.00 |
| Accretion of redeemable noncontrolling interests | -- | -- | -- | 0.24 | -- | 0.14 | -- | -- | -- | -- |
| Net income (loss) applicable to Helix | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Preferred stock dividends | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Preferred stock beneficial conversion charges | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Less: Undistributed net income allocable to participating securities | -- | -- | -- | -- | -- | 0.49 | -- | -- | -- | -- |
| Net income (loss) applicable to Helix common shareholders | 55.64 | (10.84) | (87.78) | (61.78) | 22.17 | 57.29 | 28.60 | 30.05 | (81.45) | (376.98) |
| Income from Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | (3.58) |
| Income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.00 |
| Cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic earnings (loss) per share of common stock | 0.37 | (0.07) | (0.58) | (0.41) | 0.13 | 0.39 | 0.19 | 0.20 | (0.73) | (3.58) |
| Income from Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | (3.58) |
| Income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.00 |
| Cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted earnings (loss) per share of common stock | 0.36 | (0.07) | (0.58) | (0.41) | 0.13 | 0.38 | 0.19 | 0.20 | (0.73) | (3.58) |
| Weighted basic-average common shares outstanding | 151.99 | 150.92 | 151.28 | 150.06 | 148.99 | 147.54 | 146.70 | 145.30 | 111.61 | 105.42 |
| Weighted diluted-average common shares outstanding | 154.70 | 150.92 | 151.28 | 150.06 | 149.90 | 149.58 | 146.83 | 145.30 | 111.61 | 105.42 |