Revenue and Segment Disclosures -Transaction price allocated to the remaining performance obligations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2023	Aug. 31, 2022
Transaction price allocated to the remaining performance obligations [Line Items]
Contract with Customer, Performance Obligation Satisfied in Previous Period	$ 1	$ 1	$ 31	$ 1
Revenue, Remaining Performance Obligation, Amount	195		195
Less than 12 months
Transaction price allocated to the remaining performance obligations [Line Items]
Revenue, Remaining Performance Obligation, Amount	174		174
12 to 24 months
Transaction price allocated to the remaining performance obligations [Line Items]
Revenue, Remaining Performance Obligation, Amount	9		9
After 24 months
Transaction price allocated to the remaining performance obligations [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 12		$ 12