Long-Term Obligations and Other Short-Term Borrowings Summary of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jun. 30, 2019
Debt Instrument [Line Items]
Other Borrowings	$ 14	$ 10
Total Long-Term and Short-Term Obligations	7,262	8,031
Long-term Debt and Lease Obligation, Current	508	452
Long-term Debt and Lease Obligation	6,754	7,579
2.4% Notes due 2020 [Member]
Debt Instrument [Line Items]
Notes Payable	0	450
4.625% Notes due 2021 [Member]
Debt Instrument [Line Items]
Notes Payable	504	508
2.616% Notes due 2022 [Member]
Debt Instrument [Line Items]
Notes Payable	834	1,079
3.2% Notes due 2022 [Member]
Debt Instrument [Line Items]
Notes Payable	236	247
Floating Rate Notes due 2022 [Member]
Debt Instrument [Line Items]
Notes Payable	321	340
3.2% Notes due 2023 [Member]
Debt Instrument [Line Items]
Notes Payable	573	551
3.079% Notes due 2024 [Member]
Debt Instrument [Line Items]
Notes Payable	815	781
3.5% Notes due 2025 [Member]
Debt Instrument [Line Items]
Notes Payable	413	402
3.75% Notes due 2026 [Member]
Debt Instrument [Line Items]
Notes Payable	530	494
3.41% Notes due 2027 [Member]
Debt Instrument [Line Items]
Notes Payable	1,215	1,318
4.6% Notes due 2043 [Member]
Debt Instrument [Line Items]
Notes Payable	340	346
4.5% Notes due 2044 [Member]
Debt Instrument [Line Items]
Notes Payable	342	342
4.9% Notes due 2045 [Member]
Debt Instrument [Line Items]
Notes Payable	441	445
4.368% Notes due 2047 [Member]
Debt Instrument [Line Items]
Notes Payable	560	594
7.0% Debentures due fiscal 2027 [Member]
Debt Instrument [Line Items]
Notes Payable	$ 124	$ 124