Guarantor and Non-Guarantor Financial Information (Schedule of Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended |
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013 |
Cash Flow from Operating Activities | | | |
Net cash flow (used by) from operations | $ 148.8 | $ 572 | $ 750 |
Cash Flow from Investing Activities | | | |
Capital expenditures | (99.4) | (85.3) | (90.6) |
Change related to Venezuelan operations | (93.8) | 0 | 0 |
Acquisitions, net of cash acquired | (12.1) | (187.1) | 0 |
Proceeds from sale of assets | 16.6 | 9.1 | 1.8 |
Proceeds from intercompany notes | 0 | 0 | 0 |
Payments for intercompany notes | 0 | 0 | |
Intercompany receivables and payables, net | 0 | 0 | 0 |
Investments in subsidiaries | 0 | | |
Payment for equity contributions | 0 | 0 | 0 |
Change in restricted cash | 13.9 | (0.1) | (0.3) |
Net cash from (used by) investing activities | (174.8) | (263.4) | (89.1) |
Cash Flow from Financing Activities | | | |
Cash proceeds from issuance of debt with original maturities greater than 90 days | 2,604.2 | 0 | 0 |
Cash payments on debt with original maturities greater than 90 days | (1,900) | (140.1) | (231.5) |
Net (decrease) increase in debt with original maturities of 90 days or less | (252.6) | 194.2 | (63.9) |
Deferred finance expense | (15.1) | 0 | 0 |
Proceeds from intercompany notes | 0 | 0 | |
Payments for intercompany notes | 0 | 0 | 0 |
Common shares purchased | (175.2) | (94.4) | 0 |
Cash dividends paid | (93.2) | (123.9) | (105.6) |
Transfer of cash and cash equivalents to New Energizer | (499.7) | 0 | 0 |
Proceeds from issuance of common shares, net | 4.4 | 9.9 | 18.2 |
Excess tax benefits from share-based payments | 0 | 6.6 | 5.3 |
Intercompany receivables and payables, net | 0 | 0 | 0 |
Proceeds for equity contributions | 0 | 0 | 0 |
Capital contribution | | 0 | |
Intercompany dividend | 0 | | 0 |
Net cash (used by) from financing activities | (327.2) | (147.7) | (377.5) |
Effect of exchange rate changes on cash | (63.7) | (30.2) | (3.6) |
Net decrease in cash and cash equivalents | (416.9) | 130.7 | 279.8 |
Cash and cash equivalents, beginning of period | 1,129 | 998.3 | 718.5 |
Cash and cash equivalents, end of period | 712.1 | 1,129 | 998.3 |
Parent | | | |
Cash Flow from Operating Activities | | | |
Net cash flow (used by) from operations | (178.9) | (108.2) | (14.3) |
Cash Flow from Investing Activities | | | |
Capital expenditures | 0 | 0 | 0 |
Change related to Venezuelan operations | 0 | | |
Acquisitions, net of cash acquired | 0 | 0 | |
Proceeds from sale of assets | 0 | 0 | 0 |
Proceeds from intercompany notes | 1,350 | 140.1 | 231.5 |
Payments for intercompany notes | (499.1) | 0 | |
Intercompany receivables and payables, net | 0 | (135) | 0 |
Investments in subsidiaries | 0 | | |
Payment for equity contributions | 0 | 0 | 0 |
Change in restricted cash | 0 | 0 | 0 |
Net cash from (used by) investing activities | 850.9 | 5.1 | 231.5 |
Cash Flow from Financing Activities | | | |
Cash proceeds from issuance of debt with original maturities greater than 90 days | 1,335 | | |
Cash payments on debt with original maturities greater than 90 days | (1,900) | (140.1) | (231.5) |
Net (decrease) increase in debt with original maturities of 90 days or less | (135) | 135 | 0 |
Deferred finance expense | (2.6) | | |
Proceeds from intercompany notes | 0 | 0 | |
Payments for intercompany notes | 0 | 0 | 0 |
Common shares purchased | (175.2) | (94.4) | |
Cash dividends paid | (93.2) | (123.9) | (105.6) |
Transfer of cash and cash equivalents to New Energizer | 0 | | |
Proceeds from issuance of common shares, net | 4.4 | 9.9 | 18.2 |
Excess tax benefits from share-based payments | | 6.6 | 5.3 |
Intercompany receivables and payables, net | 294.6 | 302 | 100.4 |
Proceeds for equity contributions | 0 | 0 | 0 |
Capital contribution | | 0 | |
Intercompany dividend | 0 | | 0 |
Net cash (used by) from financing activities | (672) | 95.1 | (213.2) |
Effect of exchange rate changes on cash | 0 | 0 | 0 |
Net decrease in cash and cash equivalents | 0 | (8) | 4 |
Cash and cash equivalents, beginning of period | 0 | 8 | 4 |
Cash and cash equivalents, end of period | 0 | 0 | 8 |
Guarantors | | | |
Cash Flow from Operating Activities | | | |
Net cash flow (used by) from operations | (24.2) | 370.1 | 317.1 |
Cash Flow from Investing Activities | | | |
Capital expenditures | (75.2) | (53.8) | (53.9) |
Change related to Venezuelan operations | 0 | | |
Acquisitions, net of cash acquired | (12.1) | (52) | |
Proceeds from sale of assets | 2.5 | 8.1 | 0 |
Proceeds from intercompany notes | 0 | 2.5 | 17.6 |
Payments for intercompany notes | 0 | 0 | |
Intercompany receivables and payables, net | (294.6) | (302) | (100.4) |
Investments in subsidiaries | 270 | | |
Payment for equity contributions | (16.1) | (44.2) | (0.5) |
Change in restricted cash | 0 | 0 | 0 |
Net cash from (used by) investing activities | (125.5) | (441.4) | (137.2) |
Cash Flow from Financing Activities | | | |
Cash proceeds from issuance of debt with original maturities greater than 90 days | 999 | | |
Cash payments on debt with original maturities greater than 90 days | 0 | 0 | 0 |
Net (decrease) increase in debt with original maturities of 90 days or less | 11.6 | 2.9 | (0.2) |
Deferred finance expense | (12.3) | | |
Proceeds from intercompany notes | 599.1 | 12.9 | |
Payments for intercompany notes | (1,450) | (140.1) | (242.5) |
Common shares purchased | 0 | 0 | |
Cash dividends paid | 0 | 0 | 0 |
Transfer of cash and cash equivalents to New Energizer | (12.4) | | |
Proceeds from issuance of common shares, net | 0 | 0 | 0 |
Excess tax benefits from share-based payments | | 0 | 0 |
Intercompany receivables and payables, net | 0 | 190.5 | 62 |
Proceeds for equity contributions | 0 | 0 | 0 |
Capital contribution | | 0 | |
Intercompany dividend | 14.3 | | 0 |
Net cash (used by) from financing activities | 149.3 | 66.2 | (180.7) |
Effect of exchange rate changes on cash | 0 | 0 | 0 |
Net decrease in cash and cash equivalents | (0.4) | (5.1) | (0.8) |
Cash and cash equivalents, beginning of period | 3.3 | 8.4 | 9.2 |
Cash and cash equivalents, end of period | 2.9 | 3.3 | 8.4 |
Non-Guarantors | | | |
Cash Flow from Operating Activities | | | |
Net cash flow (used by) from operations | 351.9 | 365.5 | 569.7 |
Cash Flow from Investing Activities | | | |
Capital expenditures | (24.2) | (31.5) | (36.7) |
Change related to Venezuelan operations | (93.8) | | |
Acquisitions, net of cash acquired | 0 | (135.1) | |
Proceeds from sale of assets | 14.1 | 1 | 1.8 |
Proceeds from intercompany notes | 100 | 0 | 11 |
Payments for intercompany notes | (100) | (12.9) | |
Intercompany receivables and payables, net | 0 | (55.5) | (62) |
Investments in subsidiaries | (270) | | |
Payment for equity contributions | 0 | 0 | 0 |
Change in restricted cash | 13.9 | (0.1) | (0.3) |
Net cash from (used by) investing activities | (360) | (234.1) | (86.2) |
Cash Flow from Financing Activities | | | |
Cash proceeds from issuance of debt with original maturities greater than 90 days | 270.2 | | |
Cash payments on debt with original maturities greater than 90 days | 0 | 0 | 0 |
Net (decrease) increase in debt with original maturities of 90 days or less | (129.2) | 56.3 | (63.7) |
Deferred finance expense | (0.2) | | |
Proceeds from intercompany notes | 0 | 0 | |
Payments for intercompany notes | 0 | (2.5) | (17.6) |
Common shares purchased | 0 | 0 | |
Cash dividends paid | 0 | 0 | 0 |
Transfer of cash and cash equivalents to New Energizer | (487.3) | | |
Proceeds from issuance of common shares, net | 0 | 0 | 0 |
Excess tax benefits from share-based payments | | 0 | 0 |
Intercompany receivables and payables, net | 0 | 0 | 0 |
Proceeds for equity contributions | 16.1 | 44.2 | 0.5 |
Capital contribution | | (55.4) | |
Intercompany dividend | (14.3) | | (122.5) |
Net cash (used by) from financing activities | (344.7) | 42.6 | (203.3) |
Effect of exchange rate changes on cash | (63.7) | (30.2) | (3.6) |
Net decrease in cash and cash equivalents | (416.5) | 143.8 | 276.6 |
Cash and cash equivalents, beginning of period | 1,125.7 | 981.9 | 705.3 |
Cash and cash equivalents, end of period | 709.2 | 1,125.7 | 981.9 |
Eliminations | | | |
Cash Flow from Operating Activities | | | |
Net cash flow (used by) from operations | 0 | (55.4) | (122.5) |
Cash Flow from Investing Activities | | | |
Capital expenditures | 0 | 0 | 0 |
Change related to Venezuelan operations | 0 | | |
Acquisitions, net of cash acquired | 0 | 0 | |
Proceeds from sale of assets | 0 | 0 | 0 |
Proceeds from intercompany notes | (1,450) | (142.6) | (260.1) |
Payments for intercompany notes | 599.1 | 12.9 | |
Intercompany receivables and payables, net | 294.6 | 492.5 | 162.4 |
Investments in subsidiaries | 0 | | |
Payment for equity contributions | 16.1 | 44.2 | 0.5 |
Change in restricted cash | 0 | 0 | 0 |
Net cash from (used by) investing activities | (540.2) | 407 | (97.2) |
Cash Flow from Financing Activities | | | |
Cash proceeds from issuance of debt with original maturities greater than 90 days | 0 | | |
Cash payments on debt with original maturities greater than 90 days | 0 | 0 | 0 |
Net (decrease) increase in debt with original maturities of 90 days or less | 0 | 0 | 0 |
Deferred finance expense | 0 | | |
Proceeds from intercompany notes | (599.1) | (12.9) | |
Payments for intercompany notes | 1,450 | 142.6 | 260.1 |
Common shares purchased | 0 | 0 | |
Cash dividends paid | 0 | 0 | 0 |
Transfer of cash and cash equivalents to New Energizer | 0 | | |
Proceeds from issuance of common shares, net | 0 | 0 | 0 |
Excess tax benefits from share-based payments | | 0 | 0 |
Intercompany receivables and payables, net | (294.6) | (492.5) | (162.4) |
Proceeds for equity contributions | (16.1) | (44.2) | (0.5) |
Capital contribution | | 55.4 | |
Intercompany dividend | 0 | | 122.5 |
Net cash (used by) from financing activities | 540.2 | (351.6) | 219.7 |
Effect of exchange rate changes on cash | 0 | 0 | 0 |
Net decrease in cash and cash equivalents | 0 | 0 | 0 |
Cash and cash equivalents, beginning of period | 0 | 0 | 0 |
Cash and cash equivalents, end of period | $ 0 | $ 0 | $ 0 |