XML 54 R37.htm IDEA: XBRL DOCUMENT
v3.20.4

Share Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Summary Of Non-Vested Share Award Related Compensation Expense Recognized | The following table summarizes share award and cash-settled award compensation expense recognized during each of the years in the three-year period ended December 31, 2020 (in millions):
| 2020 |  | 2019 |  | 2018
Contract drilling | $ | 10.7 |  |  | $ | 22.1 |  |  | $ | 18.9 |
General and administrative | 9.2 |  |  | 17.4 |  |  | 14.5 |
| 19.9 |  |  | 39.5 |  |  | 33.4 |
Tax benefit | (1.8) |  |  | (2.5) |  |  | (2.8) |
Total | $ | 18.1 |  |  | $ | 37.0 |  |  | $ | 30.6 |
Summary Of Value Of Non-Vested Share Awards Granted And Vested | The following table summarizes the value of share awards and cash-settled awards granted and vested during each of the years in the three-year period ended December 31, 2020:
| Share Awards |  | Cash-Settled Awards
| 2020 |  | 2019 |  | 2018 |  | 2020 |  | 2019 |  | 2018
Weighted-average grant-date fair value of share awards granted (per share) | $ | 3.07 |  |  | $ | 11.50 |  |  | $ | 24.62 |  |  | $ | 0.75 |  |  | $ | — |  |  | $ | 21.35 |
Total fair value of share awards vested during the period (in millions) | $ | 3.26 |  |  | $ | 17.70 |  |  | $ | 7.50 |  |  | $ | 0.22 |  |  | $ | 3.50 |  |  | $ | 9.90 |
Summary Of Non-Vested Share Award Activity | The following table summarizes share awards and cash-settled awards activity for the year ended December 31, 2020 (shares in thousands):
| Share Awards |  | Cash-settled Awards
| Awards |  | Weighted-Average Grant-Date Fair Value |  | Awards |  | Weighted-Average Grant-Date Fair Value
Share awards and cash-settled awards as of December 31, 2019 | 6,433 |  |  | $ | 19.89 |  |  | 697 |  |  | $ | 46.28 |
Granted | 1,118 |  |  | 3.07 |  |  | 66 |  |  | 0.75 |
Vested | (2,473) |  |  | 16.55 |  |  | (342) |  |  | 29.59 |
Forfeited | (2,096) |  |  | 8.15 |  |  | (110) |  |  | 28.01 |
Share awards and cash-settled awards as of December 31, 2020 | 2,982 |  |  | $ | 16.40 |  |  | 311 |  |  | $ | 22.74 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Summary Of Non-Vested Share Award Activity [Table Text Block]. + References No definition available. + Details
Name: | val_ScheduleOfSummaryOfNonVestedShareAwardActivityTableTextBlock
Namespace Prefix: | val_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Summary Of Non-Vested Share Award Related Compensation Expense Recognized [Table Text Block] + References No definition available. + Details
Name: | val_ScheduleOfSummaryOfNonVestedShareAwardRelatedCompensationExpenseRecognizedTableTextBlock
Namespace Prefix: | val_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Summary Of Value Of Non-Vested Share Awards Granted And Vested [Table Text Block]. + References No definition available. + Details
Name: | val_ScheduleOfSummaryOfValueOfNonVestedShareAwardsGrantedAndVestedTableTextBlock
Namespace Prefix: | val_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration