Long-Term Obligations and Other Short-Term Borrowings Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 5,700		$ 6,200
Accounts Payable	23,400		$ 23,700
Notes Payable Repurchased		$ 37
Loss on Early Extinguishment of Debt	(10)	$ 0
2.616% Notes due 2022
Debt Instrument [Line Items]
Repayments of Notes Payable	572
2.616% Notes
Debt Instrument [Line Items]
Loss on Early Extinguishment of Debt	10
Commercial Paper [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000
Short Term Credit Facilities Member
Debt Instrument [Line Items]
Other Short-term Borrowings	0
Short Term Credit Facilities Member | Committed Receivables Sales Facility Program [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000