Fair Value Measurements (Tables)

3 Months Ended

Jul. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table summarizes the assets and liabilities measured or disclosed at fair value on a recurring basis:

	April 30, 2021				July 31, 2021
	Carrying		Fair		Carrying		Fair
(Dollars in millions)	Amount		Value		Amount		Value
Assets
Cash and cash equivalents	$	1,150	$	1,150	$	1,172	$	1,172
Currency derivatives	3		3		4		4
Liabilities
Currency derivatives	31		31		12		12
Short-term borrowings	205		205		155		155
Long-term debt	2,354		2,663		2,346		2,718