Revenue and Segment Disclosures Revenue Contract Balances (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Revenue Contract Balances [Line Items]
Deferred revenue	$ (79)	$ (18)	$ (36)
Accounts Receivable [Member]
Revenue Contract Balances [Line Items]
Increase in contract receivable	842
Increase in contract receivable from business combination	(921)
Increase Decrease In Contract with Customer, Asset, Net - Current and Non-Current	(79)
Contract with Customer, Asset, Net	188	267
Deferred Revenue [Domain]
Revenue Contract Balances [Line Items]
Deferred Revenue, Additions	574
Increase in deferred revenue from business combination	(653)
Deferred revenue	(79)
Deferred Revenue	294	373
Deferred commission [Domain]
Revenue Contract Balances [Line Items]
Increase in deferred commission	23
Decrease in deferred commission	(30)
Net change in deferred commission	(7)
Capitalized Contract Cost, Net	$ 21	$ 28