Long-Term Obligations and Other Short-Term Borrowings Narrative (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Line of Credit Facility [Line Items]
Accounts Payable, Current		$ 21,535	$ 19,677
Notes Payable Repurchased		100
Carrying Amount of Debt Associated with Divestiture				$ 378
Other Borrowings		10	11
Maturities of existing long-term obligations and other short-term borrowings - 2020		452
Maturities of existing long-term obligations and other short-term borrowings-2021		512
Maturities of existing long-term obligations and other short-term borrowings-2022		1,667
Maturities of existing long-term obligations and other short-term borrowings-2023		552
Maturities of existing long-term obligations and other short-term borrowings-2024		782
Maturities of existing long-term obligations and other short-term borrowings-Thereafter		4,066
Letter of Credit
Line of Credit Facility [Line Items]
Long-term Line of Credit		24	24
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		2,000
Commercial paper
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Amount Outstanding During Period		785
Line of Credit Facility, Maximum Borrowing Capacity		2,000
Short Term Credit Facilities
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		9	$ 8
2.616% Notes due fiscal 2022
Line of Credit Facility [Line Items]
Notes Payable Repurchased		67
1.7% Notes due 2018
Line of Credit Facility [Line Items]
Proceeds from (Repayments of) Notes Payable	$ 400
3.2% Notes due 2023
Line of Credit Facility [Line Items]
Notes Payable Repurchased		1
Floating Rate Notes due fiscal 2022
Line of Credit Facility [Line Items]
Notes Payable Repurchased		8
3.41% Notes due fiscal 2027
Line of Credit Facility [Line Items]
Notes Payable Repurchased		$ 24