Debentures - Change in Fair Value (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023
Debt Instrument [Line Items]
Debenture, Fair Value, beginning balance			$ 194
Debenture total fair value adjustment			0
Debenture, Fair Value, ending balance	$ 195		$ 195
2020 Debentures
Debt Instrument [Line Items]
Debenture total fair value adjustment	$ 0	$ (6)		$ 16