Revenue and Segment Disclosures - Long-lived Assets and Total Assets by Geographic Areas (Details) - USD ($) $ in Millions	Feb. 28, 2021	Feb. 29, 2020
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	$ 1,731	$ 2,546
Assets	2,818	3,888
Canada
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	289	374
Assets	504	657
United States
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	1,411	2,132
Assets	1,963	3,071
Other Countries
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	31	40
Assets	$ 351	$ 160