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Fresh Start Accounting - Condensed Balance Sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Reorganization, Chapter 11 [Line Items] |  |  |  |
Cash and cash equivalents | $ 724,100 | $ 608,700 | $ 607,600 |
Restricted Cash | 24,400 | 35,900 | 88,400 | $ 11,400
Accounts receivable, net | 449,100 | 444,200 | 425,900 |
Other | 148,600 | 117,800 | 90,500 |
Total current assets | 1,346,200 | 1,206,600 | 1,212,400 |
Property, Plant and Equipment, Net | 977,200 | 890,900 | 909,100 | 10,960,500
Principal amount | 254,000 | 249,100 | 228,300 |
INVESTMENT IN ARO | 111,100 | 86,600 | 80,500 |
OTHER ASSETS | 171,800 | 169,900 | 165,300 |
TOTAL ASSETS | 2,860,300 | 2,603,100 | 2,595,600 |
Accounts payable - trade | 256,500 | 225,800 | 174,100 |
Accrued Liabilities and Other Liabilities |  |  | 216,500 |
Liabilities, Current | 504,400 | 422,000 | 390,600 |
Long-term Debt |  |  | 544,800 |
Other Liabilities, Noncurrent | 515,600 | 558,400 | 565,400 |
Liabilities Not Subject to Compromise | 1,562,400 | 1,525,700 | 1,500,800 |
Liabilities Subject to Compromise |  |  | 0 | $ 7,313,700
Warrants and Rights Outstanding | 16,400 | 16,400 | 16,400 |
Predecessor, Additional Paid In Capital |  |  | 0 |
Additional paid-in capital | 1,097,900 | 1,083,000 | 1,078,700 |
Retained earnings | 160,100 | (16,400) | 0 |
Accumulated other comprehensive income | 14,700 | (9,100) | 0 |
Treasury Stock, Value |  |  | 0 |
Total Valaris shareholders' equity | 1,289,900 | 1,074,700 | 1,095,900 |
NONCONTROLLING INTERESTS | 8,000 | 2,700 | (1,100) |
Total equity | 1,297,900 | 1,077,400 | 1,094,800 |
Liabilities and Equity | $ 2,860,300 | $ 2,603,100 | 2,595,600 |
Class A Ordinary Shares, U.S. [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 0 |
Common Class B, Par Value In GBP [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 0 |
Common Stock [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 800 |
Reorganization, Chapter 11, Predecessor, before Adjustment |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Cash and cash equivalents |  |  | 280,200 |
Restricted Cash |  |  | 45,700 |
Accounts receivable, net |  |  | 425,900 |
Other |  |  | 370,100 |
Total current assets |  |  | 1,121,900 |
Property, Plant and Equipment, Net |  |  | 10,026,400 |
Principal amount |  |  | 442,700 |
INVESTMENT IN ARO |  |  | 123,900 |
OTHER ASSETS |  |  | 166,400 |
TOTAL ASSETS |  |  | 11,881,300 |
Accounts payable - trade |  |  | 161,500 |
Accrued Liabilities and Other Liabilities |  |  | 290,700 |
Liabilities, Current |  |  | 452,200 |
Long-term Debt |  |  | 0 |
Other Liabilities, Noncurrent |  |  | 706,200 |
Liabilities Not Subject to Compromise |  |  | 1,158,400 |
Liabilities Subject to Compromise |  |  | 7,313,700 |
Warrants and Rights Outstanding |  |  | 0 |
Predecessor, Additional Paid In Capital |  |  | 8,644,000 |
Additional paid-in capital |  |  | 0 |
Retained earnings |  |  | (5,147,400) |
Accumulated other comprehensive income |  |  | (93,400) |
Treasury Stock, Value |  |  | (75,500) |
Total Valaris shareholders' equity |  |  | 3,410,300 |
NONCONTROLLING INTERESTS |  |  | (1,100) |
Total equity |  |  | 3,409,200 |
Liabilities and Equity |  |  | 11,881,300 |
Reorganization, Chapter 11, Predecessor, before Adjustment | Class A Ordinary Shares, U.S. [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 82,500 |
Reorganization, Chapter 11, Predecessor, before Adjustment | Common Class B, Par Value In GBP [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 100 |
Reorganization, Chapter 11, Predecessor, before Adjustment | Common Stock [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 0 |
Reorganization, Chapter 11, Plan Effect Adjustment |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Cash and cash equivalents |  |  | 327,400 |
Restricted Cash |  |  | 42,700 |
Accounts receivable, net |  |  | 0 |
Other |  |  | 1,500 |
Total current assets |  |  | 371,600 |
Property, Plant and Equipment, Net |  |  | (417,600) |
Principal amount |  |  | 0 |
INVESTMENT IN ARO |  |  | 0 |
OTHER ASSETS |  |  | (10,000) |
TOTAL ASSETS |  |  | (56,000) |
Accounts payable - trade |  |  | 13,100 |
Accrued Liabilities and Other Liabilities |  |  | (12,400) |
Liabilities, Current |  |  | 700 |
Long-term Debt |  |  | 544,800 |
Other Liabilities, Noncurrent |  |  | (55,200) |
Liabilities Not Subject to Compromise |  |  | 490,300 |
Liabilities Subject to Compromise |  |  | (7,313,700) |
Common shares, value |  |  | 800 |
Warrants and Rights Outstanding |  |  | 16,400 |
Predecessor, Additional Paid In Capital |  |  | (8,644,000) |
Additional paid-in capital |  |  | 1,078,700 |
Retained earnings |  |  | 14,322,600 |
Accumulated other comprehensive income |  |  | 0 |
Treasury Stock, Value |  |  | 75,500 |
Total Valaris shareholders' equity |  |  | 6,767,400 |
NONCONTROLLING INTERESTS |  |  | 0 |
Total equity |  |  | 6,767,400 |
Liabilities and Equity |  |  | (56,000) |
Reorganization, Chapter 11, Plan Effect Adjustment | Class A Ordinary Shares, U.S. [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | (82,500) |
Reorganization, Chapter 11, Plan Effect Adjustment | Common Class B, Par Value In GBP [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | (100) |
Reorganization, Chapter 11, Plan Effect Adjustment | Common Stock [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 800 |
Reorganization, Chapter 11, Fresh-Start Adjustment |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Cash and cash equivalents |  |  | 0 |
Restricted Cash |  |  | 0 |
Accounts receivable, net |  |  | 0 |
Other |  |  | (281,100) |
Total current assets |  |  | (281,100) |
Property, Plant and Equipment, Net |  |  | (8,699,700) |
Principal amount |  |  | (214,400) |
INVESTMENT IN ARO |  |  | (43,400) |
OTHER ASSETS |  |  | 8,900 |
TOTAL ASSETS |  |  | (9,229,700) |
Accounts payable - trade |  |  | (500) |
Accrued Liabilities and Other Liabilities |  |  | (61,800) |
Liabilities, Current |  |  | (62,300) |
Long-term Debt |  |  | 0 |
Other Liabilities, Noncurrent |  |  | (85,600) |
Liabilities Not Subject to Compromise |  |  | (147,900) |
Liabilities Subject to Compromise |  |  | 0 |
Warrants and Rights Outstanding |  |  | 0 |
Predecessor, Additional Paid In Capital |  |  | 0 |
Additional paid-in capital |  |  | 0 |
Retained earnings |  |  | (9,175,200) |
Accumulated other comprehensive income |  |  | 93,400 |
Treasury Stock, Value |  |  | 0 |
Total Valaris shareholders' equity |  |  | (9,081,800) |
NONCONTROLLING INTERESTS |  |  | 0 |
Total equity |  |  | (9,081,800) |
Liabilities and Equity |  |  | (9,229,700) |
Reorganization, Chapter 11, Fresh-Start Adjustment | Class A Ordinary Shares, U.S. [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 0 |
Reorganization, Chapter 11, Fresh-Start Adjustment | Common Class B, Par Value In GBP [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | 0 |
Reorganization, Chapter 11, Fresh-Start Adjustment | Common Stock [Member] |  |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |  |
Common shares, value |  |  | $ 0 |

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