Long-Term Obligations and Other Short-Term Borrowings Summary of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Debt Instrument [Line Items]
Other Borrowings	$ 698	$ 10
Total Long-Term and Short-Term Obligations	7,934	8,031
Long-term Debt and Lease Obligation, Current	1,192	452
Long-term Debt and Lease Obligation	6,742	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	506	508
2.616% Notes due 2022 [Member]
Debt Instrument [Line Items]
Notes Payable	873	1,079
3.2% Notes due 2022 [Member]
Debt Instrument [Line Items]
Notes Payable	238	247
Floating Rate Notes due 2022 [Member]
Debt Instrument [Line Items]
Notes Payable	326	340
3.2% Notes due 2023 [Member]
Debt Instrument [Line Items]
Notes Payable	553	551
3.079% Notes due 2024 [Member]
Debt Instrument [Line Items]
Notes Payable	780	781
3.5% Notes due 2025 [Member]
Debt Instrument [Line Items]
Notes Payable	402	402
3.75% Notes due 2026 [Member]
Debt Instrument [Line Items]
Notes Payable	497	494
3.41% Notes due 2027 [Member]
Debt Instrument [Line Items]
Notes Payable	1,238	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	443	445
4.368% Notes due 2047 [Member]
Debt Instrument [Line Items]
Notes Payable	574	594
7.0% Debentures due fiscal 2027 [Member]
Debt Instrument [Line Items]
Notes Payable	$ 124	$ 124