Quarterly report pursuant to Section 13 or 15(d)

Cover Page

v3.20.2
Cover Page - shares
 3 Months Ended
Jun. 30, 2020
Aug. 03, 2020
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2020  
Document Transition Report false  
Entity File Number 001-35701  
Entity Registrant Name Bristow Group Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 72-1455213  
Entity Address, Address Line One 3151 Briarpark Drive, Suite 700  
Entity Address, City or Town Houston,  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77042  
City Area Code 713  
Local Phone Number 267-7600  
Entity Information, Former Legal or Registered Name   Era Group Inc.  
Former Fiscal Year End Date --12-31  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Trading Symbol VTOL  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   30,279,955
Entity Central Index Key 0001525221  
Document Fiscal Year Focus 2021  
Current Fiscal Year End Date --03-31  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Former Address    
Entity Information [Line Items]    
Entity Address, Address Line One          945 Bunker Hill Rd., Suite 650  
Entity Address, City or Town Houston,  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77024