Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 1,318	$ 1,914	$ 1,504	$ 2,529
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(4)	1	(6)	5
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax	(1)	3	0	16
Ending Balance	1,399	1,803	1,399	1,803
Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	0	2	1	(1)
Other comprehensive income before reclassification	0	1	0	2
Amounts reclassified from AOCL into net income (loss)	0	(1)	(1)	1
Ending Balance	0	2	0	2
Foreign Currency Cumulative Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(6)	(6)	(4)	(9)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(4)	2	(6)	5
Ending Balance	(10)	(4)	(10)	(4)
Change in Fair Value From Instrument-Specific Credit Risk On Debentures
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(8)	(8)	(9)	(22)
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax	(1)	(5)	0	10
Amounts reclassified from AOCL into net income (loss)	0	7	0	6
Ending Balance	(9)	(6)	(9)	(6)
Other Post-Employment Benefit Obligations
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending Balance	(1)	(1)	(1)	(1)
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending Balance	$ (20)	$ (9)	$ (20)	$ (9)