Revenue and Segment Disclosures - Long-lived Assets and Total Assets by Geographic Areas (Details) - USD ($) $ in Millions	May 31, 2020	Feb. 29, 2020
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	$ 1,905	$ 2,546
Assets	3,215	3,888
Canada
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	356	374
Assets	706	657
United States
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	1,511	2,132
Assets	2,360	3,071
Other Countries
Long-lived Assets and Total Assets by Geographic Areas [Line Items]
Long-Lived Assets	38	40
Assets	$ 149	$ 160