Income Taxes	3 Months Ended
Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company and its two active U.S. corporate subsidiaries, Blocker and Sub Holding, were both incorporated in the U.S. and as such are subject to U.S. income taxes. The Company and Blocker will file a consolidated U.S. Federal income tax return and both will file various state returns. Sub Holding will file a separate U.S. Federal income tax return and various state tax returns. The Company’s controlled foreign corporations are subject to taxation at the entity level in their respective jurisdictions. Holdings is organized as a limited liability company and is taxed as a partnership for U.S. income tax purposes. As such, with the exception of a limited number of state and local jurisdictions, Holdings is not subject to U.S. income taxes. Accordingly, Blocker and Nexeo Solutions, Inc. report their share of Holdings’ taxable income earned after the Closing Date on their respective U.S. federal tax return. Income tax benefit for the three months ended December 31, 2016 was $2.7 million on a pre-tax loss of $11.0 million for the Successor compared to the income tax expense of $1.3 million on pre-tax income of $5.6 million for the three months ended December 31, 2015 for the Predecessor. The current period tax benefit was largely attributable to income tax benefits on U.S. operations related to deferred taxes. The prior period tax expense was largely attributed to foreign income tax expense on profitable foreign operations. For all periods, the Company computed the provision for income taxes based on the actual year-to-date effective tax rate by applying the discrete method. Use of the annual effective tax rate, which relies on accurate projections by legal entity of income earned and taxed in foreign jurisdictions, as well as accurate projections by legal entity of permanent and temporary differences, was not considered a reliable estimate for purposes of calculating year-to-date income tax expense. At December 31, 2016 and September 30, 2016, the valuation allowance was $3.2 million and $2.8 million, respectively, primarily relating to Nexeo Plaschem operations. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Based upon management’s expectations at December 31, 2016, management believes it is more likely than not that it will realize the majority of its deferred tax assets. Uncertain Tax Positions U.S. GAAP prescribes a recognition threshold and measurement attribute for the accounting and financial statement disclosure of tax positions taken or expected to be taken in a tax return. The evaluation of a tax position is a two-step process. The first step requires the Company to determine whether it is more likely than not that a tax position will be sustained upon examination based on the technical merits of the position. The second step requires the Company to recognize in the financial statements each tax position that meets the more likely than not criteria, measured as the amount of benefit that has a greater than 50% likelihood of being realized. Differences between the amount of tax benefits taken or expected to be taken in the income tax returns and the amount of tax benefits recognized in the financial statements represent the Company’s unrecognized income tax benefits, which are recorded as a liability, with the long-term portion included in Other non-current liabilities and the current portion included in Accrued expenses and other liabilities on the Company’s condensed consolidated balance sheet. The Company recognizes interest and penalties related to uncertain tax positions, if any, as a component of Income tax expense in the condensed consolidated statements of operations. There was an insignificant amount of interest and penalties recognized during all periods. As of December 31, 2016 and September 30, 2016, the Company had $0.6 million and $1.2 million, respectively, related to uncertain tax positions, including related accrued interest and penalties. This decrease was related to the release of uncertain tax provisions from the prior year and lapses in statutory tax periods. The Company or one of its subsidiaries files income tax returns in various state and foreign jurisdictions. Within the U.S., the Company is subject to federal and state income tax examination by tax authorities for periods after December 2012. With respect to countries outside of the U.S., with certain exceptions, the Company’s foreign subsidiaries are subject to income tax audits for years after 2011.

Income Taxes

The Company and its two active U.S. corporate subsidiaries, Blocker and Sub Holding, were both incorporated in the U.S. and as such are subject to U.S. income taxes. The Company and Blocker will file a consolidated U.S. Federal income tax return and both will file various state returns. Sub Holding will file a separate U.S. Federal income tax return and various state tax returns. The Company’s controlled foreign corporations are subject to taxation at the entity level in their respective jurisdictions.

Holdings is organized as a limited liability company and is taxed as a partnership for U.S. income tax purposes. As such, with the exception of a limited number of state and local jurisdictions, Holdings is not subject to U.S. income taxes. Accordingly, Blocker and Nexeo Solutions, Inc. report their share of Holdings’ taxable income earned after the Closing Date on their respective U.S. federal tax return.

Income tax benefit for the three months ended December 31, 2016 was $2.7 million on a pre-tax loss of $11.0 million for the Successor compared to the income tax expense of $1.3 million on pre-tax income of $5.6 million for the three months ended December 31, 2015 for the Predecessor. The current period tax benefit was largely attributable to income tax benefits on U.S. operations related to deferred taxes. The prior period tax expense was largely attributed to foreign income tax expense on profitable foreign operations.

For all periods, the Company computed the provision for income taxes based on the actual year-to-date effective tax rate by applying the discrete method. Use of the annual effective tax rate, which relies on accurate projections by legal entity of income earned and taxed in foreign jurisdictions, as well as accurate projections by legal entity of permanent and temporary differences, was not considered a reliable estimate for purposes of calculating year-to-date income tax expense.

At December 31, 2016 and September 30, 2016, the valuation allowance was $3.2 million and $2.8 million, respectively, primarily relating to Nexeo Plaschem operations. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Based upon management’s expectations at December 31, 2016, management believes it is more likely than not that it will realize the majority of its deferred tax assets.

Uncertain Tax Positions

U.S. GAAP prescribes a recognition threshold and measurement attribute for the accounting and financial statement disclosure of tax positions taken or expected to be taken in a tax return. The evaluation of a tax position is a two-step process. The first step requires the Company to determine whether it is more likely than not that a tax position will be sustained upon examination based on the technical merits of the position. The second step requires the Company to recognize in the financial statements each tax position that meets the more likely than not criteria, measured as the amount of benefit that has a greater than 50% likelihood of being realized. Differences between the amount of tax benefits taken or expected to be taken in the income tax returns and the amount of tax benefits recognized in the financial statements represent the Company’s unrecognized income tax benefits, which are recorded as a liability, with the long-term portion included in Other non-current liabilities and the current portion included in Accrued expenses and other liabilities on the Company’s condensed consolidated balance sheet.

The Company recognizes interest and penalties related to uncertain tax positions, if any, as a component of Income tax expense in the condensed consolidated statements of operations. There was an insignificant amount of interest and penalties recognized during all periods. As of December 31, 2016 and September 30, 2016, the Company had $0.6 million and $1.2 million, respectively, related to uncertain tax positions, including related accrued interest and penalties. This decrease was related to the release of uncertain tax provisions from the prior year and lapses in statutory tax periods.

The Company or one of its subsidiaries files income tax returns in various state and foreign jurisdictions. Within the U.S., the Company is subject to federal and state income tax examination by tax authorities for periods after December 2012. With respect to countries outside of the U.S., with certain exceptions, the Company’s foreign subsidiaries are subject to income tax audits for years after 2011.