Long-Term Obligations and Other Short-Term Borrowings (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022
Debt Instrument [Line Items]
Total Long-Term and Short-Term Obligations	$ 4,700		$ 4,700		$ 5,300
Accounts Payable	29,600		29,600		$ 27,100
Gain (Loss) on Extinguishment of Debt	0	$ 0	0	$ 10
Commercial Paper [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000		2,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000		2,000
Short Term Credit Facilities Member
Debt Instrument [Line Items]
Other Short-term Borrowings	0		0
2.616% Notes due 2022 [Member]
Debt Instrument [Line Items]
Notes Payable Repurchased				572
Gain (Loss) on Extinguishment of Debt				$ 10
3.2% Notes due 2023
Debt Instrument [Line Items]
Repayments of Notes Payable	550
Committed Receivables Sales Facility Program [Member] | Short Term Credit Facilities Member
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000		$ 1,000