Debt Short-term Borrowings (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Jan. 31, 2023	Apr. 30, 2022
Short-Term Debt [Line Items]
Short-term borrowings	$ 1,004	$ 0
Commercial Paper
Short-Term Debt [Line Items]
Short-term borrowings	$ 404	$ 0
Short-Term Debt, Weighted Average Interest Rate, at Point in Time	4.71%	0.00%
Commercial Paper Borrowings, Average Remaining Maturity	18 days	0 days
364-Day Term Loan Credit Agreement
Short-Term Debt [Line Items]
Short-term borrowings	$ 600
Short-Term Debt, Weighted Average Interest Rate, at Point in Time	5.21%
Maximum Borrowing Capacity	$ 600

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant