FAIR VALUE DISCLOSURES - Narrative (Details) - aircraft	3 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Number of aircraft impaired	0	2

The aggregate number of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

No definition available.

Name:	brs_NumberOfImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix:	brs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration