Revenue and Segment Disclosures -Transaction price allocated to the remaining performance obligations (Details) - USD ($) $ in Millions	3 Months Ended
	May 31, 2023	May 31, 2022
Transaction price allocated to the remaining performance obligations [Line Items]
Contract with Customer, Performance Obligation Satisfied in Previous Period	$ 9	$ 0
Revenue, Remaining Performance Obligation, Amount	203
Less than 12 months
Transaction price allocated to the remaining performance obligations [Line Items]
Revenue, Remaining Performance Obligation, Amount	177
12 to 24 months
Transaction price allocated to the remaining performance obligations [Line Items]
Revenue, Remaining Performance Obligation, Amount	11
After 24 months
Transaction price allocated to the remaining performance obligations [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 15