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Restructuring Plan - Rollforward of restructuring reserve (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021
Restructuring Reserve [Roll Forward]
Charges		$ 27,362	$ 380	$ 350
Project Pegasus
Restructuring Reserve [Roll Forward]
Beginning balance		0
Charges	$ 27,362	27,362
Payments		(20,794)
Ending balance	6,568	6,568	0
Employee Severance \| Project Pegasus
Restructuring Reserve [Roll Forward]
Beginning balance		0
Charges		9,453
Payments		(6,280)
Ending balance	3,173	3,173	0
Professional Fees \| Project Pegasus
Restructuring Reserve [Roll Forward]
Beginning balance		0
Charges		16,749
Payments		(13,548)
Ending balance	3,201	3,201	0
Contract Termination \| Project Pegasus
Restructuring Reserve [Roll Forward]
Beginning balance		0
Charges		535
Payments		(375)
Ending balance	160	160	0
Other Restructuring \| Project Pegasus
Restructuring Reserve [Roll Forward]
Beginning balance		0
Charges		625
Payments		(591)
Ending balance	$ 34	$ 34	$ 0