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Noncontrolling Interest (Tables) | 6 Months Ended
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Jun. 30, 2019
Noncontrolling Interest [Abstract] |
Reconciliation Of Income From Continuing Operations [Table Text Block] | Loss from continuing operations attributable to Valaris for the three-month and six-month periods ended June 30, 2019 and 2018 was as follows (in millions):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Income (loss) from continuing operations | $ | 407.3 |  |  | $ | (142.1 | ) |  | $ | 219.3 |  |  | $ | (282.5 | )
Income from continuing operations attributable to noncontrolling interests | (1.8 | ) |  | (.9 | ) |  | (4.2 | ) |  | (0.5 | )
Income (loss) from continuing operations attributable to Valaris | $ | 405.5 |  |  | $ | (143.0 | ) |  | $ | 215.1 |  |  | $ | (283.0 | )

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- Definition Reconciliation Of Income From Continuing Operations [Table Text Block] + References No definition available. + Details
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