Income Taxes - Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Feb. 29, 2020	Feb. 28, 2019
Assets
Property, plant, equipment and intangibles assets	$ 174	$ 175
Non-deductible reserves	65	89
Minimum Taxes	267	264
Convertible Debentures (see Note 7)	1	15
Research and development	327	304
Tax loss carryforwards	419	414
Other tax carryforwards	117	98
Deferred Tax Assets, Gross	1,370	1,359
Valuation allowance	1,223	1,192
Deferred income tax assets	147	167
Liabilities
Property, plant and equipment	(147)	(167)
Deferred income tax liabilities	147	167
Net deferred income tax asset (liability)	0	0
Deferred income tax assets	0	2
Deferred income tax liabilities	$ 0	$ 2