Stockholders' Equity Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Jan. 31, 2024	Oct. 31, 2023	Jul. 31, 2023	Jan. 31, 2023	Oct. 31, 2022	Jul. 31, 2022	Jan. 31, 2024	Jan. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ (235)				$ (235)
Net other comprehensive income (loss)	$ 66	$ (91)	36	$ 91	$ 2	$ 1	11	$ 94
Ending balance	(224)						(224)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(104)				(104)
Net other comprehensive income (loss)	75			119			10	108
Ending balance	(94)						(94)
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)	(10)			(34)			(3)	(24)
Ending balance	7						7
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(141)				(141)
Net other comprehensive income (loss)	1			6			4	$ 10
Ending balance	(137)						$ (137)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss)	$ 66	$ (91)	$ 36	$ 91	$ 2	$ 1