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Valvoline - Additional Information (Details) - USD ($) shares in Millions, $ in Millions | 8 Months Ended | 12 Months Ended
--- | --- | ---
May 12, 2017 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Distribution of Valvoline [Line Items] |  |  |  |
Distribution of shares | 170 |  |  |
Sale of Stock, Percentage of Ownership after Transaction | 83.00% |  |  |
Dividends Payable, fate of record |  | May 05, 2017 |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 2.745338 |  |  |
Net assets deficit |  | $ 3,571 | $ 3,406 |
Discontinued Operations [Member] |  |  |  |
Distribution of Valvoline [Line Items] |  |  |  |
Separation costs |  |  |  | $ 13
Selling, General and Administrative Expense [Member] |  |  |  |
Distribution of Valvoline [Line Items] |  |  |  |
Separation costs |  |  | $ 10 | $ 95
Valvoline Inc. [Member] |  |  |  |
Distribution of Valvoline [Line Items] |  |  |  |
Net assets deficit | $ (187) |  |  |
Valvoline Inc. [Member] |  |  |  |
Distribution of Valvoline [Line Items] |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 17.00% |  |  |

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