Other Comprehensive Income Schedule of Other Comprehensive Income (Details) - USD ($) $ in Millions		12 Months Ended
		Apr. 30, 2024		Apr. 30, 2023	Apr. 30, 2022
Before Tax:
Net other comprehensive income (loss)		$ 15		$ 113	$ 128
Tax Effect:
Net other comprehensive income (loss)		(1)		4	(58)
Net of Tax:
Net other comprehensive income (loss)		14		117	70
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Before Tax:
Net gain (loss)		(16)		135	(42)
Reclassification to earnings		4	[1]	0	0
Net other comprehensive income (loss)		(12)		135	(42)
Tax Effect:
Net gain (loss)		(1)		0	(18)
Reclassification to earnings		6		0	0
Net other comprehensive income (loss)		5		0	(18)
Net of Tax:
Net gain (loss)		(17)		135	(60)
Reclassification to earnings		10		0	0
Net other comprehensive income (loss)		(7)		135	(60)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Before Tax:
Net gain (loss)		11		3	76
Reclassification to earnings	[2]	(12)		(37)	(7)
Net other comprehensive income (loss)		(1)		(34)	69
Tax Effect:
Net gain (loss)		(2)		(1)	(17)
Reclassification to earnings		3		8	1
Net other comprehensive income (loss)		1		7	(16)
Net of Tax:
Net gain (loss)		9		2	59
Reclassification to earnings		(9)		(29)	(6)
Net other comprehensive income (loss)		0		(27)	53
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Before Tax:
Net gain (loss)		22		(26)	67
Reclassification to earnings	[3]	6		38	34
Net other comprehensive income (loss)		28		12	101
Tax Effect:
Net gain (loss)		(5)		6	(16)
Reclassification to earnings		(2)		(9)	(8)
Net other comprehensive income (loss)		(7)		(3)	(24)
Net of Tax:
Net gain (loss)		17		(20)	51
Reclassification to earnings		4		29	26
Net other comprehensive income (loss)		$ 21		$ 9	77
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Other Income [Member]
Before Tax:
Reclassification to earnings					$ (2)

[1] Pre-tax amount is classified in gain on business divestitures in the accompanying consolidated statements of operations.

[2] For 2022, $(2) of the pre-tax amount of $(7) is classified in other expense (income) in the accompanying consolidated statements of operations. Otherwise, the pre-tax amount for each year is classified as sales.

[3] Pre-tax amount is classified as non-operating postretirement expense in the accompanying consolidated statements of operations.