Long-Term Obligations and Other Short-Term Borrowings Other Financing Arrangements (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Debt Instrument [Line Items]
Other obligations	$ 110	$ 86
Short-Term Investments	200
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	2,000
Short Term Credit Facilities | Committed Receivables Sales Facility Program
Debt Instrument [Line Items]
Maximum borrowing capacity	1,000
Letter of Credit
Debt Instrument [Line Items]
Line of credit	1	1
Other Short-term Borrowings	0	0
Long-term Line of Credit	1	1
Letter of Credit | Committed Receivables Sales Facility Program
Debt Instrument [Line Items]
Line of credit	31	31
Long-term Line of Credit	31	31
Committed Receivables Sales Facility Program
Debt Instrument [Line Items]
Other Short-term Borrowings	0
Line of Credit Facility, Maximum Amount Outstanding During Period	1,300
Commercial Paper
Debt Instrument [Line Items]
Maximum borrowing capacity	2,000
Other Short-term Borrowings	$ 0	$ 0