Revenue and Segment Disclosures Revenue Contract Balances (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Revenue Contract Balances [Line Items]
Deferred revenue	$ (18)	$ (36)	$ (44)
Accounts Receivable [Member]
Revenue Contract Balances [Line Items]
Increase in contract receivable	761
Increase in contract receivable from business combination	(746)
Contract with Customer, Asset, Net	267	252
Increase Decrease In Contract with Customer, Asset, Net - Current and Non-Current	15
Deferred Revenue [Domain]
Revenue Contract Balances [Line Items]
Deferred Revenue, Additions	585
Increase in deferred revenue from business combination	(601)
Deferred revenue	(16)
Deferred Revenue	373	389
Deferred commission [Domain]
Revenue Contract Balances [Line Items]
Increase in deferred commission	37
Decrease in deferred commission	(32)
Net change in deferred commission	5
Capitalized Contract Cost, Net	$ 28	$ 23