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Related Party Transactions - Transactions with Other Related Parties (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Related Party Transaction [Line Items] |  |  |
General and administrative expenses | $ 34,700 | $ 49,100 | $ 50,400
Rig operating and maintenance expenses | 180,500 | 270,400 | 307,900
Operating expenses | 334,800 | 514,500 | 491,300
Rune Magnus Lundetr |  |  |
Related Party Transaction [Line Items] |  |  |
Charges for arrangements |  |  | 30
Outstanding amount | 0 | 0 |
Affiliated Entity |  |  |
Related Party Transaction [Line Items] |  |  |
Operating expenses | 900 | 7,900 | 15,600
Affiliated Entity | Magni Partners Limited |  |  |
Related Party Transaction [Line Items] |  |  |
General and administrative expenses | 900 | 1,000 | 1,000
Affiliated Entity | Schlumberger Limited |  |  |
Related Party Transaction [Line Items] |  |  |
Rig operating and maintenance expenses | $ 0 | $ 6,900 | $ 14,600
Affiliated Entity | Schlumberger Limited | Borr Drilling Limited |  |  |
Related Party Transaction [Line Items] |  |  |
Ownership percentage, non-controlling | 5.50% |  |

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- Definition Related Party Transactions Charges For Arrangements + References No definition available. + Details
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Namespace Prefix: | borr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Related Party Transactions, Purchases Outstanding, Amount + References No definition available. + Details
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Namespace Prefix: | borr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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Balance Type: | na
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. + References No definition available. + Details
Name: | us-gaap_OperatingExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
Name: | srt_CounterpartyNameAxis=borr_MagniPartnersLimitedMember
Namespace Prefix: |
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |