Fair Value Measurements (Tables)

12 Months Ended

Apr. 30, 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:

	2021				2022
April 30,	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	$	1,150	$	1,150	$	868	$	868
Currency derivatives	3		3		48		48
Liabilities:
Currency derivatives	31		31		1		1
Short-term borrowings	205		205		—		—
Long-term debt (including current portion)	2,354		2,663		2,269		2,239