Revenue and Segment Disclosures Revenue classified by timing of recognition (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Revenue classified by timing of recognition [Line Items]
Revenues	$ 718	$ 893	$ 1,040
Transferred over Time [Member]
Revenue classified by timing of recognition [Line Items]
Revenues	428	476	512
Transferred at Point in Time [Member]
Revenue classified by timing of recognition [Line Items]
Revenues	$ 290	$ 417	$ 528