Onerous Contracts - Narrative (Details) - rig		3 Months Ended
Jun. 27, 2022	Jun. 30, 2022
Onerous Contracts [Abstract]
Number of newbuild Jack-up rigs	3	3

Number Of Newbuild Jack-Up Rigs For Sale Per Letter Of Intent Agreement

No definition available.

Name:	borr_NumberOfNewbuildJackUpRigsForSalePerLetterOfIntentAgreement
Namespace Prefix:	borr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration