Financial Statements of Guarantors and Issuers of Guaranteed Securities - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions | Dec. 01, 2013 | Jun. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013 |
Cash Flows From Operations | | | | | | |
Net cash provided by (used in) operating activities from continuing operations | | | | $ 154.7 | $ 50.8 | $ (51.7) |
Net cash provided by (used in) operating activities from discontinued operations | | | | (0.6) | 6.7 | 15.8 |
Net cash provided by (used in) operating activities | | | | 154.1 | 57.5 | (35.9) |
Cash Flows From Investing Activities | | | | | | |
Additions to property and equipment | | | | (35.6) | (49.9) | (38.1) |
Proceeds from the disposal of property and equipment | | | | 4.1 | 1 | 2.6 |
Insurance proceeds related to property and equipment | | | | 0 | 4 | 0 |
Acquisitions | | | | 0 | (225.1) | (57.9) |
Investment in subsidiaries | | | | 0 | 0 | 0 |
Net cash used in investing activities from continuing operations | | | | (31.5) | (270) | (93.4) |
Net cash provided by (used in) investing activities from discontinued operations | | | | 0 | 60.1 | (0.5) |
Net cash used in investing activities | | | | (31.5) | (209.9) | (93.9) |
Cash Flows From Financing Activities | | | | | | |
Proceeds from sale of membership units | | | | 0 | 0 | 0.4 |
Repurchases of membership units | | | | 0 | (0.3) | (0.3) |
Tax distributions associated with membership interests | | | | (0.1) | (0.1) | (0.1) |
Purchase of additional noncontrolling equity interest in Nexeo Plaschem | | | | (34.3) | (92.2) | 0 |
Payments on short-term obligations associated with the Beijing Plaschem Acquisition | | | | 0 | 0 | (26.9) |
Proceeds from short-term debt | | | | 39.6 | 98.1 | 65.6 |
Repayments of short-term debt | | | | (51.7) | (102.1) | (14.2) |
Investment from parent | | | | 0 | 0 | 0 |
Preferred interest payment | | | | 0 | | |
Transfers to/from affiliates | | | | 0 | 0 | 0 |
Proceeds from issuance of long-term debt | | | | 495.8 | 1,317.3 | 903.1 |
Repayments of long-term debt | | | | (531.1) | (1,052.4) | (848.4) |
Payments of debt issuance costs | | | | 0 | (1.8) | (8) |
Net cash provided by (used in) financing activities | | | | (81.8) | 166.5 | 71.2 |
Effect of exchange rate changes on cash | | | | (1.3) | (0.5) | (2.1) |
Increase (decrease) in cash and cash equivalents | | | | 39.5 | 13.6 | (60.7) |
Cash and cash equivalents at the beginning of the period | | | $ 74.6 | 88.2 | 74.6 | 135.3 |
Cash and cash equivalents at end of the period | | | | 127.7 | 88.2 | 74.6 |
Subsidiaries | Holdings | | | | | | |
Cash Flows From Operations | | | | | | |
Net cash provided by (used in) operating activities from continuing operations | | | | (3.6) | (2.3) | 0.1 |
Net cash provided by (used in) operating activities from discontinued operations | | | | 0 | 0 | 0 |
Net cash provided by (used in) operating activities | | | | (3.6) | (2.3) | 0.1 |
Cash Flows From Investing Activities | | | | | | |
Additions to property and equipment | | | | 0 | 0 | 0 |
Proceeds from the disposal of property and equipment | | | | 0 | 0 | 0 |
Insurance proceeds related to property and equipment | | | | | 0 | |
Acquisitions | | | | | 0 | 0 |
Investment in subsidiaries | | | | (0.1) | (112.7) | 0 |
Net cash used in investing activities from continuing operations | | | | (0.1) | (112.7) | 0 |
Net cash provided by (used in) investing activities from discontinued operations | | | | 0 | 0 | 0 |
Net cash used in investing activities | | | | (0.1) | (112.7) | 0 |
Cash Flows From Financing Activities | | | | | | |
Proceeds from sale of membership units | | | | | | 0.4 |
Repurchases of membership units | | | | | (0.3) | (0.3) |
Tax distributions associated with membership interests | | | | 0 | (0.1) | (0.1) |
Purchase of additional noncontrolling equity interest in Nexeo Plaschem | | | | 0 | 0 | |
Payments on short-term obligations associated with the Beijing Plaschem Acquisition | | | | | | 0 |
Proceeds from short-term debt | | | | 0 | 0 | 0 |
Repayments of short-term debt | | | | 0 | 0 | 0 |
Investment from parent | | | | 0 | 0 | 0 |
Preferred interest payment | | | | 0 | | |
Transfers to/from affiliates | | | | 0 | 0.1 | (0.2) |
Proceeds from issuance of long-term debt | | | | 3.5 | 167.5 | 0 |
Repayments of long-term debt | | | | (0.5) | (51.3) | 0 |
Payments of debt issuance costs | | | | | 0 | 0 |
Net cash provided by (used in) financing activities | | | | 3 | 115.9 | (0.2) |
Effect of exchange rate changes on cash | | | | 0 | 0 | 0 |
Increase (decrease) in cash and cash equivalents | | | | (0.7) | 0.9 | (0.1) |
Cash and cash equivalents at the beginning of the period | | | 0 | 0.9 | 0 | 0.1 |
Cash and cash equivalents at end of the period | | | | 0.2 | 0.9 | 0 |
Subsidiaries | Finance | | | | | | |
Cash Flows From Operations | | | | | | |
Net cash provided by (used in) operating activities from continuing operations | | | | 0 | 0 | 0 |
Net cash provided by (used in) operating activities from discontinued operations | | | | 0 | 0 | 0 |
Net cash provided by (used in) operating activities | | | | 0 | 0 | 0 |
Cash Flows From Investing Activities | | | | | | |
Additions to property and equipment | | | | 0 | 0 | 0 |
Proceeds from the disposal of property and equipment | | | | 0 | 0 | 0 |
Insurance proceeds related to property and equipment | | | | | 0 | |
Acquisitions | | | | | 0 | 0 |
Investment in subsidiaries | | | | 0 | 0 | 0 |
Net cash used in investing activities from continuing operations | | | | 0 | 0 | 0 |
Net cash provided by (used in) investing activities from discontinued operations | | | | 0 | 0 | 0 |
Net cash used in investing activities | | | | 0 | 0 | 0 |
Cash Flows From Financing Activities | | | | | | |
Proceeds from sale of membership units | | | | | | 0 |
Repurchases of membership units | | | | | 0 | 0 |
Tax distributions associated with membership interests | | | | 0 | 0 | 0 |
Purchase of additional noncontrolling equity interest in Nexeo Plaschem | | | | 0 | 0 | |
Payments on short-term obligations associated with the Beijing Plaschem Acquisition | | | | | | 0 |
Proceeds from short-term debt | | | | 0 | 0 | 0 |
Repayments of short-term debt | | | | 0 | 0 | 0 |
Investment from parent | | | | 0 | 0 | 0 |
Preferred interest payment | | | | 0 | | |
Transfers to/from affiliates | | | | 0 | 0 | 0 |
Proceeds from issuance of long-term debt | | | | 0 | 0 | 0 |
Repayments of long-term debt | | | | 0 | 0 | 0 |
Payments of debt issuance costs | | | | | 0 | 0 |
Net cash provided by (used in) financing activities | | | | 0 | 0 | 0 |
Effect of exchange rate changes on cash | | | | 0 | 0 | 0 |
Increase (decrease) in cash and cash equivalents | | | | 0 | 0 | 0 |
Cash and cash equivalents at the beginning of the period | | | 0 | 0 | 0 | 0 |
Cash and cash equivalents at end of the period | | | | 0 | 0 | 0 |
Subsidiaries | Sub Holding | | | | | | |
Cash Flows From Operations | | | | | | |
Net cash provided by (used in) operating activities from continuing operations | | | | 9.2 | (7.7) | |
Net cash provided by (used in) operating activities from discontinued operations | | | | 0 | 0 | |
Net cash provided by (used in) operating activities | | | | 9.2 | (7.7) | |
Cash Flows From Investing Activities | | | | | | |
Additions to property and equipment | | | | 0 | 0 | |
Proceeds from the disposal of property and equipment | | | | 0 | 0 | |
Insurance proceeds related to property and equipment | | | | | 0 | |
Acquisitions | | | | | (205.1) | |
Investment in subsidiaries | | | | 0 | 0 | |
Net cash used in investing activities from continuing operations | | | | 0 | (205.1) | |
Net cash provided by (used in) investing activities from discontinued operations | | | | 0 | 0 | |
Net cash used in investing activities | | | | 0 | (205.1) | |
Cash Flows From Financing Activities | | | | | | |
Repurchases of membership units | | | | | 0 | |
Tax distributions associated with membership interests | | | | 0 | 0 | |
Purchase of additional noncontrolling equity interest in Nexeo Plaschem | | | | 0 | 0 | |
Proceeds from short-term debt | | | | 0 | 0 | |
Repayments of short-term debt | | | | 0 | 0 | |
Investment from parent | | | | 0.1 | 112.7 | |
Preferred interest payment | | | | 0 | | |
Transfers to/from affiliates | | | | 1.7 | (1.7) | |
Proceeds from issuance of long-term debt | | | | 2.1 | 129.5 | |
Repayments of long-term debt | | | | (12.8) | (27.7) | |
Payments of debt issuance costs | | | | | 0 | |
Net cash provided by (used in) financing activities | | | | (8.9) | 212.8 | |
Effect of exchange rate changes on cash | | | | 0 | 0 | |
Increase (decrease) in cash and cash equivalents | | | | 0.3 | 0 | |
Cash and cash equivalents at the beginning of the period | | | 0 | 0 | 0 | |
Cash and cash equivalents at end of the period | | | | 0.3 | 0 | 0 |
Subsidiaries | Solutions | | | | | | |
Cash Flows From Operations | | | | | | |
Net cash provided by (used in) operating activities from continuing operations | | | | 124.1 | 51.4 | (23) |
Net cash provided by (used in) operating activities from discontinued operations | | | | (0.4) | 7.3 | 13.7 |
Net cash provided by (used in) operating activities | | | | 123.7 | 58.7 | (9.3) |
Cash Flows From Investing Activities | | | | | | |
Additions to property and equipment | | | | (33.9) | (49.2) | (36.4) |
Proceeds from the disposal of property and equipment | | | | 4 | 0.9 | 1 |
Insurance proceeds related to property and equipment | | | | | 4 | |
Acquisitions | | | | | (20) | 0 |
Investment in subsidiaries | | | | (34.3) | (100.4) | (3) |
Net cash used in investing activities from continuing operations | | | | (64.2) | (164.7) | (38.4) |
Net cash provided by (used in) investing activities from discontinued operations | | | | 0 | 51.7 | (0.5) |
Net cash used in investing activities | | | | (64.2) | (113) | (38.9) |
Cash Flows From Financing Activities | | | | | | |
Proceeds from sale of membership units | | | | | | 0 |
Repurchases of membership units | | | | | 0 | 0 |
Tax distributions associated with membership interests | | | | (0.1) | 0 | 0 |
Purchase of additional noncontrolling equity interest in Nexeo Plaschem | | | | 0 | 0 | |
Payments on short-term obligations associated with the Beijing Plaschem Acquisition | | | | | | 0 |
Proceeds from short-term debt | | | | 0 | 0 | 0 |
Repayments of short-term debt | | | | 0 | 0 | 0 |
Investment from parent | | | | 0 | 0 | 0 |
Preferred interest payment | | | | (5) | | |
Transfers to/from affiliates | | | | (0.5) | 31.3 | (7.6) |
Proceeds from issuance of long-term debt | | | | 401.7 | 813.9 | 731.6 |
Repayments of long-term debt | | | | (422.6) | (776.6) | (655.3) |
Payments of debt issuance costs | | | | | (1.8) | (8) |
Net cash provided by (used in) financing activities | | | | (26.5) | 66.8 | 60.7 |
Effect of exchange rate changes on cash | | | | 0 | 0 | 0 |
Increase (decrease) in cash and cash equivalents | | | | 33 | 12.5 | 12.5 |
Cash and cash equivalents at the beginning of the period | | | 27.6 | 40.1 | 27.6 | 15.1 |
Cash and cash equivalents at end of the period | | | | 73.1 | 40.1 | 27.6 |
Subsidiaries | Non- Guarantor Subsidiaries | | | | | | |
Cash Flows From Operations | | | | | | |
Net cash provided by (used in) operating activities from continuing operations | | | | 30 | 9.4 | (28.8) |
Net cash provided by (used in) operating activities from discontinued operations | | | | (0.2) | (0.6) | 2.1 |
Net cash provided by (used in) operating activities | | | | 29.8 | 8.8 | (26.7) |
Cash Flows From Investing Activities | | | | | | |
Additions to property and equipment | | | | (1.7) | (0.7) | (1.7) |
Proceeds from the disposal of property and equipment | | | | 0.1 | 0.1 | 1.6 |
Insurance proceeds related to property and equipment | | | | | 0 | |
Acquisitions | | | | | 0 | (57.9) |
Investment in subsidiaries | | | | 0 | 0 | 0 |
Net cash used in investing activities from continuing operations | | | | (1.6) | (0.6) | (58) |
Net cash provided by (used in) investing activities from discontinued operations | | | | 0 | 8.4 | 0 |
Net cash used in investing activities | | | | (1.6) | 7.8 | (58) |
Cash Flows From Financing Activities | | | | | | |
Proceeds from sale of membership units | | | | | | 0 |
Repurchases of membership units | | | | | 0 | 0 |
Tax distributions associated with membership interests | | | | 0 | 0 | 0 |
Purchase of additional noncontrolling equity interest in Nexeo Plaschem | | | | (34.3) | (92.2) | |
Payments on short-term obligations associated with the Beijing Plaschem Acquisition | | | | | | (26.9) |
Proceeds from short-term debt | | | | 39.6 | 98.1 | 65.6 |
Repayments of short-term debt | | | | (51.7) | (102.1) | (14.2) |
Investment from parent | | | | 34.3 | 100.4 | 3 |
Preferred interest payment | | | | 0 | | |
Transfers to/from affiliates | | | | (1.2) | (29.7) | 7.8 |
Proceeds from issuance of long-term debt | | | | 88.5 | 206.4 | 171.5 |
Repayments of long-term debt | | | | (95.2) | (196.8) | (193.1) |
Payments of debt issuance costs | | | | | 0 | 0 |
Net cash provided by (used in) financing activities | | | | (20) | (15.9) | 13.7 |
Effect of exchange rate changes on cash | | | | (1.3) | (0.5) | (2.1) |
Increase (decrease) in cash and cash equivalents | | | | 6.9 | 0.2 | (73.1) |
Cash and cash equivalents at the beginning of the period | | | 47 | 47.2 | 47 | 120.1 |
Cash and cash equivalents at end of the period | | | | 54.1 | 47.2 | 47 |
Eliminations | | | | | | |
Cash Flows From Operations | | | | | | |
Net cash provided by (used in) operating activities from continuing operations | | | | (5) | 0 | 0 |
Net cash provided by (used in) operating activities from discontinued operations | | | | 0 | 0 | 0 |
Net cash provided by (used in) operating activities | | | | (5) | 0 | 0 |
Cash Flows From Investing Activities | | | | | | |
Additions to property and equipment | | | | 0 | 0 | 0 |
Proceeds from the disposal of property and equipment | | | | 0 | 0 | 0 |
Insurance proceeds related to property and equipment | | | | | 0 | |
Acquisitions | | | | | 0 | 0 |
Investment in subsidiaries | | | | 34.4 | 213.1 | 3 |
Net cash used in investing activities from continuing operations | | | | 34.4 | 213.1 | 3 |
Net cash provided by (used in) investing activities from discontinued operations | | | | 0 | 0 | 0 |
Net cash used in investing activities | | | | 34.4 | 213.1 | 3 |
Cash Flows From Financing Activities | | | | | | |
Proceeds from sale of membership units | | | | | | 0 |
Repurchases of membership units | | | | | 0 | 0 |
Tax distributions associated with membership interests | | | | 0 | 0 | 0 |
Purchase of additional noncontrolling equity interest in Nexeo Plaschem | | | | 0 | 0 | |
Payments on short-term obligations associated with the Beijing Plaschem Acquisition | | | | | | 0 |
Proceeds from short-term debt | | | | 0 | 0 | 0 |
Repayments of short-term debt | | | | 0 | 0 | 0 |
Investment from parent | | | | (34.4) | (213.1) | (3) |
Preferred interest payment | | | | 5 | | |
Transfers to/from affiliates | | | | 0 | 0 | 0 |
Proceeds from issuance of long-term debt | | | | 0 | 0 | 0 |
Repayments of long-term debt | | | | 0 | 0 | 0 |
Payments of debt issuance costs | | | | | 0 | 0 |
Net cash provided by (used in) financing activities | | | | (29.4) | (213.1) | (3) |
Effect of exchange rate changes on cash | | | | 0 | 0 | 0 |
Increase (decrease) in cash and cash equivalents | | | | 0 | 0 | 0 |
Cash and cash equivalents at the beginning of the period | | | 0 | 0 | 0 | 0 |
Cash and cash equivalents at end of the period | | | | 0 | $ 0 | $ 0 |
CSD | Solutions | | | | | | |
Supplemental disclosure of non-cash activities: | | | | | | |
Assignment of third-party debt by sub holding to solutions | $ 23 | | | | | |
CSD | Subsidiaries | Solutions | | | | | | |
Supplemental disclosure of non-cash activities: | | | | | | |
Assignment of third-party debt by sub holding to solutions | | | $ 23 | | | |
Archway Sales, Inc. | Solutions | | | | | | |
Supplemental disclosure of non-cash activities: | | | | | | |
Assignment of third-party debt by sub holding to solutions | | | | $ 36 | | |
Archway Sales, Inc. | Subsidiaries | Solutions | | | | | | |
Supplemental disclosure of non-cash activities: | | | | | | |
Assignment of third-party debt by sub holding to solutions | | $ 36 | | | | |