| In millions, except per share items | Jun-30-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-K | S-1/A | 10-Q | 10-K | S-1/A |
| Revenues | 11.6 | | | 12.8 | | |
| Revenues growth | -8.9% | | | | | |
| Cost of Revenue [Abstract] | | | | | | |
| Flight operations | 6.3 | | | 5.8 | | |
| Maintenance | 4.2 | | | 3.6 | | |
| Total cost of revenues | 10.5 | | | 9.4 | | |
| Gross income (loss) | 1.1 | | | 3.3 | | |
| Gross margin | 9.5% | | | 26.1% | | |
| Selling, general and administrative expense | 15.2 | | | 5.7 | | |
| Operating loss | -14.1 | | -3,191.2 | -2.4 | | -424.1 |
| Operating margin | -121.2% | | | -18.8% | | |
| Interest expense | -5.5 | | | -2.3 | | |
| Other income | 0.6 | | | 0.1 | | |
| Net loss | -19.0 | | -6,263.1 | -4.6 | | 4,919.1 |
| Series A Preferred Stock – adjustment to maximum redemption value | -5.8 | | | | | |
| Legacy Bridger Series A Preferred Shares – adjustment for redemption, extinguishment, accrued interest, and change in fair value | | | | -81.3 | | |
| Legacy Bridger Series C Preferred Shares - adjustment to maximum redemption value | | | | -191.2 | | |
| |
| Net (loss) income attributable to Common stockholders – basic | ($0.55) | | | ($7.15) | | |
| Net (loss) income attributable to Common stockholders – diluted | -24.8 | | | -277.1 | | |
| Net (loss) income per common stock – basic (in dollars per share) | ($0.55) | | | ($7.15) | | |
| Net (loss) income per common stock – diluted (in dollars per share) | ($0.55) | | | ($7.15) | | |
| |
| Weighted average Common Stock outstanding – basic (in shares) | 45.4 | | | 38.8 | | |
| Weighted average Common Stock outstanding – diluted (in shares) | 45.4 | | | 38.8 | | |