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Long-Term Obligations and Other Short-Term Borrowings Summary of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Debt Instrument [Line Items]
Accounts payable	$ 23,700	$ 21,374
Other obligations	67	35
Total	6,236	6,775
Less: current portion of long-term obligations and other short-term borrowings	871	10
Long-term obligations, less current portion	5,365	6,765
2.616% Notes due fiscal 2022
Debt Instrument [Line Items]
Notes Payable	572	834
3.2% Notes due 2022
Debt Instrument [Line Items]
Notes Payable	0	236
Floating Rate Notes due fiscal 2022
Debt Instrument [Line Items]
Notes Payable	281	321
3.2% Notes due 2023
Debt Instrument [Line Items]
Notes Payable	564	576
3.079% Notes due fiscal 2024
Debt Instrument [Line Items]
Notes Payable	794	809
3.5% Notes due fiscal 2025
Debt Instrument [Line Items]
Notes Payable	410	413
3.75% Notes due 2025
Debt Instrument [Line Items]
Notes Payable	524	529
3.41% Notes due fiscal 2027
Debt Instrument [Line Items]
Notes Payable	1,216	1,215
4.6% Notes due 2043
Debt Instrument [Line Items]
Notes Payable	341	340
4.5% Notes due 2044
Debt Instrument [Line Items]
Notes Payable	342	342
4.9% Notes due 2045
Debt Instrument [Line Items]
Notes Payable	441	441
4.368% Notes due fiscal 2047
Debt Instrument [Line Items]
Notes Payable	560	560
7.0% Debentures due 2026
Debt Instrument [Line Items]
Notes Payable	$ 124	$ 124

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