Bristow Group Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

DEBT - Narrative (Details)

DEBT - Narrative (Details) € in Millions, £ in Millions		1 Months Ended					9 Months Ended	12 Months Ended
DEBT - Narrative (Details) € in Millions, £ in Millions	Jan. 27, 2023 GBP (£)	Feb. 28, 2025 EUR (€)	Jun. 30, 2024 EUR (€) aircraft	Jan. 31, 2024 GBP (£)	Jan. 31, 2023 GBP (£) aircraft loan	Feb. 28, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 GBP (£)	Dec. 31, 2024 EUR (€)	Dec. 31, 2023 USD ($)	Feb. 26, 2025 EUR (€)
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt \| £	£ 138.0				£ 145.0
Unamortized debt issuance costs								$ 16,300,000
Long-term debt								$ 689,783,000			$ 548,070,000
Subsequent Event \| Forecast
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt \| €		€ 5.6
UKSAR Debt
Debt Instrument [Line Items]
Basis spread on variable rate					2.75%
IRCG Debt
Debt Instrument [Line Items]
Basis spread on variable rate			1.95%
Senior Notes \| 6.875% Senior Notes
Debt Instrument [Line Items]
Stated interest rate						6.875%		6.875%			6.875%
Face amount						$ 400,000,000
Proceeds from issuance of long-term debt						$ 395,000,000
Redemption price						101.00%
Interest expense, debt							$ 13,800,000	$ 27,500,000			$ 27,500,000
Unamortized debt issuance costs								4,400,000			5,800,000
Long-term debt								395,610,000			394,184,000
Secured Debt \| UKSAR Debt
Debt Instrument [Line Items]
Interest expense, debt								14,300,000			11,400,000
Unamortized debt issuance costs								9,100,000			8,400,000
Debt instruments, number of agreements \| loan					2
Debt instrument term				12 years	13 years
Principal payment								15,400,000			13,000,000
Long-term debt								200,273,000			153,886,000
Number of helicopters to secure debt \| aircraft					10
Secured Debt \| IRCG Debt
Debt Instrument [Line Items]
Interest expense, debt								1,500,000
Unamortized debt issuance costs								2,800,000
Long-term debt								93,900,000			0
Secured Debt \| IRCG Debt \| Subsequent Event \| Forecast
Debt Instrument [Line Items]
Maximum borrowing capacity \| €												€ 1.0
Line of Credit \| UKSAR Debt \| Revolving Credit Facility
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt \| £									£ 3.0
Maximum borrowing capacity \| £				£ 55.0
Proceeds from long-term lines of credit								65,000,000.0	£ 52.0
Line of Credit \| IRCG Debt \| Revolving Credit Facility
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt \| €			€ 100.0
Proceeds from long-term lines of credit								99,600,000		€ 93.4
Commitment fee percentage			80.00%
New aircrafts \| aircraft			5
Line of Credit \| IRCG Debt \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Debt instrument term			2 years
Line of Credit \| IRCG Debt \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Debt instrument term			5 years
Line of Credit \| ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								85,000,000
Line of Credit \| ABL Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								8,100,000			3,100,000
Maximum borrowing capacity increase								120,000,000
Long-term debt								$ 0			$ 0