Fair Value Measurements (Tables)

9 Months Ended

Jan. 31, 2022

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				January 31, 2022
	Carrying		Fair		Carrying		Fair
(Dollars in millions)	Amount		Value		Amount		Value
Assets
Cash and cash equivalents	$	1,150	$	1,150	$	812	$	812
Currency derivatives	3		3		30		30
Liabilities
Currency derivatives	31		31		2		2
Short-term borrowings	205		205		16		16
Long-term debt (including current portion)	2,354		2,663		2,311		2,537