Stockholders' Equity Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Jul. 31, 2025	Jul. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 3,993	$ 3,517
Net other comprehensive income (loss)	36	(43)
Ending balance	3,988	3,465
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(92)
Net other comprehensive income (loss)	25	(42)
Ending balance	(67)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(5)
Net other comprehensive income (loss)	2	(2)
Ending balance	(3)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(123)
Net other comprehensive income (loss)	9	1
Ending balance	(114)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(220)	(221)
Net other comprehensive income (loss)	36	(43)
Ending balance	$ (184)	$ (264)