Other Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended
		Jul. 31, 2024	Jul. 31, 2023
Before Tax:
Net other comprehensive income (loss)		$ (46)	$ 32
Tax Effect:
Net other comprehensive income (loss)		3	4
Net of Tax:
Net other comprehensive income (loss)		(43)	36
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Before Tax:
Net gain (loss)		(44)	37
Reclassification to earnings		0	0
Net other comprehensive income (loss)		(44)	37
Tax Effect:
Net gain (loss)		2	2
Reclassification to earnings		0	0
Net other comprehensive income (loss)		2	2
Net of Tax:
Net gain (loss)		(42)	39
Reclassification to earnings		0	0
Net other comprehensive income (loss)		(42)	39
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Before Tax:
Net gain (loss)		1	(4)
Reclassification to earnings	[1]	(4)	(3)
Net other comprehensive income (loss)		(3)	(7)
Tax Effect:
Net gain (loss)		0	1
Reclassification to earnings	[1]	1	1
Net other comprehensive income (loss)		1	2
Net of Tax:
Net gain (loss)		1	(3)
Reclassification to earnings	[1]	(3)	(2)
Net other comprehensive income (loss)		(2)	(5)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Before Tax:
Net gain (loss)		0	0
Reclassification to earnings	[2]	1	2
Net other comprehensive income (loss)		1	2
Tax Effect:
Net gain (loss)		0	0
Reclassification to earnings	[2]	0	0
Net other comprehensive income (loss)		0	0
Net of Tax:
Net gain (loss)		0	0
Reclassification to earnings	[2]	1	2
Net other comprehensive income (loss)		$ 1	$ 2

[1] Pre-tax amount for each period is classified as sales in the accompanying condensed consolidated statements of operations.

[2] Pre-tax amount for each period is classified as non-operating postretirement expense in the accompanying condensed consolidated statements of operations.