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Long-Term Obligations and Other Short-Term Borrowings (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2022 | Mar. 31, 2021 | Jun. 30, 2021
Debt Instrument [Line Items] |  |  |  |  |
Total Long-Term and Short-Term Obligations | $ 5,600 |  | $ 5,600 |  | $ 6,200
Gain (Loss) on Extinguishment of Debt | 0 | $ 0 | 10 | $ 1 |
Accounts Payable | 24,800 |  | 24,800 |  | $ 23,700
Line of Credit Facility, Maximum Amount Outstanding During Period |  |  | 1,200 |  |
Line of Credit Facility, Average Outstanding Amount |  |  | 25 |  |
Commercial Paper [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 2,000 |  | 2,000 |  |
Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 2,000 |  | 2,000 |  |
Short Term Credit Facilities Member |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Other Short-term Borrowings | 0 |  | 0 |  |
2.616% Notes due 2022 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Gain (Loss) on Extinguishment of Debt |  |  | 10 |  |
Repayments of Notes Payable |  |  | 572 | 2 |
Committed Receivables Sales Facility Program [Member] | Short Term Credit Facilities Member |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 1,000 |  | $ 1,000 |  |
Floating Rate Notes due 2022 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of Notes Payable |  |  |  | $ 40 |

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