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Chapter 11 Proceeding and Ability to Continue as a Going Concern - Debtor-in-Possession Condensed Balance Sheet (Details) - USD ($) | Sep. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
CURRENT ASSETS |  |  |  |
Cash and cash equivalents | $ 180,400,000 | $ 97,200,000 | $ 129,500,000 | $ 275,100,000
Accounts receivable, net | 429,700,000 | 520,700,000 |  |
Other current assets | 454,700,000 | 446,500,000 |  |
Total current assets | 1,064,800,000 | 1,064,400,000 |  |
PROPERTY AND EQUIPMENT, AT COST | 13,215,500,000 | 18,393,800,000 |  |
Less accumulated depreciation | 2,133,100,000 | 3,296,900,000 |  |
Property and equipment, net | 11,082,400,000 | 15,096,900,000 | 15,250,700,000 |
LONG-TERM NOTES RECEIVABLE FROM ARO | 442,700,000 | 452,900,000 |  |
LONG-TERM NOTES RECEIVABLE FROM NON-DEBTOR SUBSIDIARIES | 2,103,000,000.0 |  |  |
INVESTMENT IN ARO | 121,100,000 | 128,700,000 |  |
OTHER ASSETS | 200,200,000 | 188,300,000 |  |
Total assets | 12,911,200,000 | 16,931,200,000 |  |
CURRENT LIABILITIES |  |  |  |
Accounts payable - trade | 180,700,000 | 288,200,000 |  |
Accrued liabilities and other | 207,300,000 | 417,700,000 |  |
Total current liabilities | 388,000,000.0 | 830,700,000 |  |
OTHER LIABILITIES | 696,900,000 | 867,400,000 |  |
Total liabilities not subject to compromise | 1,084,900,000 |  |  |
Liabilities subject to compromise | 7,313,700,000 |  | $ 0 |
Total debtors' equity | 4,512,600,000 | 9,309,600,000 |  |
Total liabilities and shareholders' equity | 12,911,200,000 | $ 16,931,200,000 |  |
Valaris, PLC And Certain Subsidiaries Party To The Bankruptcy Cases |  |  |  |
CURRENT ASSETS |  |  |  |
Cash and cash equivalents | 80,900,000 |  |  |
Accounts receivable, net | 376,100,000 |  |  |
Accounts receivable from non-debtor subsidiaries | 2,930,600,000 |  |  |
Other current assets | 427,400,000 |  |  |
Total current assets | 3,815,000,000.0 |  |  |
PROPERTY AND EQUIPMENT, AT COST | 12,262,400,000 |  |  |
Less accumulated depreciation | 1,866,400,000 |  |  |
Property and equipment, net | 10,396,000,000.0 |  |  |
LONG-TERM NOTES RECEIVABLE FROM ARO | 442,700,000 |  |  |
INVESTMENT IN ARO | 121,100,000 |  |  |
INVESTMENTS IN NON-DEBTOR SUBSIDIARIES | 654,900,000 |  |  |
OTHER ASSETS | 175,300,000 |  |  |
Total assets | 17,708,000,000.0 |  |  |
CURRENT LIABILITIES |  |  |  |
Accounts payable - trade | 149,300,000 |  |  |
Accrued liabilities and other | 162,100,000 |  |  |
Short term notes payable to non-debtors | 145,900,000 |  |  |
Total current liabilities | 457,300,000 |  |  |
LONG-TERM NOTES PAYABLE TO NON-DEBTOR SUBSIDIARIES | 2,402,700,000 |  |  |
OTHER LIABILITIES | 536,600,000 |  |  |
Total liabilities not subject to compromise | 3,396,600,000 |  |  |
Liabilities subject to compromise | 7,313,700,000 |  |  |
Total debtors' equity | 6,997,700,000 |  |  |
Total liabilities and shareholders' equity | $ 17,708,000,000.0 |  |  |

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- Definition The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(5)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-06(3)) -URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e604059-122996 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. 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