Document and Entity Information	3 Months Ended
	Jun. 30, 2013	Aug. 02, 2013
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2013
Entity Registrant Name	Bristow Group Inc.
Entity Central Index Key	0000073887
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		36,355,089
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1