Annual report pursuant to Section 13 and 15(d)

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES - Statements of Operations of VIEs (Details)

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VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES - Statements of Operations of VIEs (Details) - USD ($)
$ in Thousands
 5 Months Ended 7 Months Ended 12 Months Ended
Mar. 31, 2020
Oct. 31, 2019
Mar. 31, 2021
Mar. 31, 2019
Variable Interest Entity [Line Items]        
Revenues $ 485,763 $ 757,223 $ 1,178,062 $ 1,369,662
Net income (loss) 139,076 (836,206) (56,285) (336,138)
VIE, primary beneficiary | Bristow Aviation Holdings Limited        
Variable Interest Entity [Line Items]        
Revenues 413,885 663,047 890,147 1,221,344
Operating income (loss) (14,083) 45,505 262,724 (41,148)
Net income (loss) $ (166,698) $ (193,867) $ (69,119) $ (347,056)