Bristow Group Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

DEBT - Narrative (Details)

DEBT - Narrative (Details) € in Millions, £ in Millions	3 Months Ended		6 Months Ended					12 Months Ended
DEBT - Narrative (Details) € in Millions, £ in Millions	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 GBP (£)	Jun. 30, 2026 EUR (€)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 GBP (£)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 GBP (£)	Jan. 31, 2026 USD ($)	Feb. 28, 2021
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 0	$ 0	$ 2,849,000			$ 0
Proceeds from issuance of long-term debt \| £				£ 200.0			£ 200.0
Long-term debt	$ 745,480,000		$ 745,480,000					$ 671,454,000
6.750% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	6.75%		6.75%							6.75%
Face amount										$ 500,000,000
Unamortized debt issuance costs	$ 11,000,000.0		$ 11,000,000.0
Long-term debt	$ 489,038,000		$ 489,038,000					$ 0
6.875% Senior Notes
Debt Instrument [Line Items]
Stated interest rate								6.875%
6.875% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	6.875%		6.875%								6.875%
Unamortized debt issuance costs								$ 3,000,000.0
Long-term debt	$ 0		$ 0					397,031,000
UKSAR Debt \| Secured Debt
Debt Instrument [Line Items]
Unamortized debt issuance costs	5,900,000		5,900,000					6,600,000
Principal payment			8,000,000.0			$ 24,900,000
Voluntary prepayment								15,300,000	£ 11.2
Long-term debt	151,045,000		151,045,000					160,635,000
IRCG Debt \| Secured Debt
Debt Instrument [Line Items]
Unamortized debt issuance costs	2,100,000		2,100,000					2,500,000
Long-term debt	105,397,000		105,397,000					113,788,000
IRCG Debt \| Line of Credit
Debt Instrument [Line Items]
Principal payment			$ 5,700,000
IRCG Debt \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt \| €					€ 100.0
Commitment fee percentage			80.00%	80.00%	80.00%
ABL Facility \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 85,000,000		$ 70,000,000
Increase limit	105,000,000		$ 105,000,000
Long-term debt	0		0
Aggregate face amount outstanding	$ 9,900,000		$ 9,900,000