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New Accounting Standards Recently Adopted Accounting Pronouncements (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenue, Net | $ 5,464 | $ 5,305 |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 244 | $ 170 |
Accounts receivable - net | 5,442 |  | $ 5,622
Inventories | 2,027 |  | 1,819
Assets held for sale | 3,042 |  | 3,015
Other current assets | 1,152 |  | 1,182
Property, plant and equipment - net | 3,314 |  | 3,300
Noncurrent assets held for sale | 5,159 |  | 5,188
Other noncurrent assets | 2,330 |  | 3,070
Deferred revenue | 1,378 |  | 1,326
Liabilities held for sale | 1,636 |  | 1,791
Retained earnings | 6,136 |  | $ 6,604
Accounting Standards Update 2016-16 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | (546) |  |
Accounting Standards Update 2016-01 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | 8 |  |
Accounting Standards Update 2014-09 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | (45) |  |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Accounts receivable - net | (34) |  |
Inventories | (14) |  |
Assets held for sale | 10 |  |
Other current assets | (22) |  |
Property, plant and equipment - net | 40 |  |
Noncurrent assets held for sale | 6 |  |
Other noncurrent assets | 27 |  |
Deferred revenue | 9 |  |
Liabilities held for sale | 39 |  |
Retained earnings | (35) |  |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Revenue, Net | 1 |  |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 1 |  |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Power Solutions | Accounting Standards Update 2014-09 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Net sales | 318 |  |
Calculated under Revenue Guidance in Effect before Topic 606 [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Accounts receivable - net | 5,476 |  |
Inventories | 2,041 |  |
Assets held for sale | 3,032 |  |
Other current assets | 1,174 |  |
Property, plant and equipment - net | 3,274 |  |
Noncurrent assets held for sale | 5,153 |  |
Other noncurrent assets | 2,303 |  |
Deferred revenue | 1,369 |  |
Liabilities held for sale | 1,597 |  |
Retained earnings | $ 6,171 |  |

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