Other Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended						9 Months Ended
		Jan. 31, 2026	Oct. 31, 2025	Jul. 31, 2025	Jan. 31, 2025	Oct. 31, 2024	Jul. 31, 2024	Jan. 31, 2026	Jan. 31, 2025
Before Tax:
Net other comprehensive income (loss)		$ 76			$ (45)			$ 134	$ (119)
Tax Effect:
Net other comprehensive income (loss)		6			(7)			(2)	(3)
Net of Tax:
Net other comprehensive income (loss)		82	$ 14	$ 36	(52)	$ (27)	$ (43)	132	(122)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Before Tax:
Net gain (loss)		80			(55)			117	(126)
Reclassification to earnings		0			0			0	0
Net other comprehensive income (loss)		80			(55)			117	(126)
Tax Effect:
Net gain (loss)		6			(5)			3	(2)
Reclassification to earnings		0			0			0	0
Net other comprehensive income (loss)		6			(5)			3	(2)
Net of Tax:
Net gain (loss)		86			(60)			120	(128)
Reclassification to earnings		0			0			0	0
Net other comprehensive income (loss)		86			(60)			120	(128)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Before Tax:
Net gain (loss)		(15)			12			(16)	11
Reclassification to earnings	[1]	3			(4)			10	(7)
Net other comprehensive income (loss)		(12)			8			(6)	4
Tax Effect:
Net gain (loss)		3			(3)			3	(3)
Reclassification to earnings	[1]	0			1			(2)	2
Net other comprehensive income (loss)		3			(2)			1	(1)
Net of Tax:
Net gain (loss)		(12)			9			(13)	8
Reclassification to earnings	[1]	3			(3)			8	(5)
Net other comprehensive income (loss)		(9)			6			(5)	3
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Before Tax:
Net gain (loss)		6			1			(3)	1
Reclassification to earnings	[2]	2			1			26	2
Net other comprehensive income (loss)		8			2			23	3
Tax Effect:
Net gain (loss)		(2)			0			0	0
Reclassification to earnings	[2]	(1)			0			(6)	0
Net other comprehensive income (loss)		(3)			0			(6)	0
Net of Tax:
Net gain (loss)		4			1			(3)	1
Reclassification to earnings	[2]	1			1			20	2
Net other comprehensive income (loss)		$ 5			$ 2			$ 17	$ 3

[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.