XML 196 R96.htm IDEA: XBRL DOCUMENT
v3.22.1

Jack-up rigs - impairment loss (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |
Impairment of non-current assets | $ 0.0 | $ 77.1 | $ 11.4
Atla |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |
Impairment of non-current assets | 0.0 | 30.9 | 0.0
Balder |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |
Impairment of non-current assets | 0.0 | 27.8 | 0.0
MSS1 |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |
Impairment of non-current assets | 0.0 | 18.4 | 0.0
Eir |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |
Impairment of non-current assets | $ 0.0 | $ 0.0 | $ 11.4

X
- 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_ImpairedLongLivedAssetsHeldAndUsedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=borr_AltaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=borr_BalderMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=borr_MSS1JackUpRigMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=borr_EirJackUpRigMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |