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Note 15, Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Sep. 30, 2016
Related Party Transaction [Line Items] |  |  |  |
Accounts Receivable, Related Parties |  | $ 159 |  | $ 172
Revenue from Related Parties |  | 300 | $ 337 |
Related Party Transaction, Purchases from Related Party |  | 377 | 341 |
Accounts Payable, Related Parties |  | 144 |  | $ 96
Related Party Transaction, Amounts of Transaction |  | 87 |  |
Corporate, Non-Segment [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party | $ 76 |  | 215 |
Separation costs incurred by parent- benefited directly [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party | 122 | $ 254 |  |
Separation costs incurred by parent [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party | $ 138 |  | 332 |
Amount of revision [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenue from Related Parties |  |  | 41 |
Related Party Transaction, Purchases from Related Party |  |  | $ 53 |

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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=16382449 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 + Details
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