Stockholders' Equity Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Oct. 31, 2023	Jul. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		$ (221)			$ (221)
Net other comprehensive income (loss)	$ (27)	(43)	$ (91)	$ 36	(70)	$ (55)
Ending balance	(291)				(291)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(111)			(111)
Net other comprehensive income (loss)	(26)		(104)		(68)	(65)
Ending balance	(179)				(179)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		10			10
Net other comprehensive income (loss)	(1)		12		(3)	7
Ending balance	7				7
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(120)			(120)
Net other comprehensive income (loss)	0		1		1	$ 3
Ending balance	(119)				$ (119)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss)	$ (27)	$ (43)	$ (91)	$ 36