Description of Business and Basis of Presentation (Policies)	9 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation - The accompanying Consolidated (Condensed) Financial Statements include the accounts of Energizer and its subsidiaries. All significant intercompany transactions are eliminated. Energizer has no material equity method investments, variable interests or non-controlling interests. The accompanying Consolidated (Condensed) Financial Statements have been prepared in accordance with Article 10 of Regulation S-X and do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. The year-ended September 30, 2024 Consolidated (Condensed) Balance Sheet was derived from the audited financial statements included in Energizer's Report on Form 10-K, but does not include all disclosures required by U.S. GAAP. In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair statement of our operations, financial position and cash flows have been included. Certain reclassifications have been made to the prior year financial statements to conform to the current presentation. Operating results for any quarter are not necessarily indicative of the results for any other quarter or for the full year. These statements should be read in conjunction with the financial statements and notes thereto for Energizer for the year ended September 30, 2024 included in the Annual Report on Form 10-K dated November 19, 2024.
Recently Adopted Accounting Pronouncements And Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements - In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting: Improvements to Reportable Segment Disclosures. This guidance requires disclosure of incremental segment information on an annual and interim basis. This amendment is effective for our fiscal year ending September 30, 2025 and our interim periods within the fiscal year ending September 30, 2026. The disclosures required from this new pronouncement will be included within our fiscal 2025 annual Form 10-K. Recently Issued Accounting Pronouncements - In December 2023, the FASB issued ASU No. 2023-09, Income Taxes: Improvements to Income Tax Disclosures. This guidance requires consistent categories and greater disaggregation of information in the rate reconciliation and disclosures of income taxes paid by jurisdiction. This amendment is effective for our fiscal year ending September 30, 2026. We are currently assessing the impact of this guidance on our disclosures. In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. ASU 2024-03 requires disclosure of certain costs and expenses on an interim and annual basis in the notes to the financial statements. The guidance is effective for our fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. We are currently assessing the impact of this guidance on our disclosures.

Description of Business and Basis of Presentation (Policies)

9 Months Ended

Jun. 30, 2025

Basis of Presentation - The accompanying Consolidated (Condensed) Financial Statements include the accounts of Energizer and its subsidiaries. All significant intercompany transactions are eliminated. Energizer has no material equity method investments, variable interests or non-controlling interests.

The accompanying Consolidated (Condensed) Financial Statements have been prepared in accordance with Article 10 of Regulation S-X and do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. The year-ended September 30, 2024 Consolidated (Condensed) Balance Sheet was derived from the audited financial statements included in Energizer's Report on Form 10-K, but does not include all disclosures required by U.S. GAAP. In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair statement of our operations, financial position and cash flows have been included. Certain reclassifications have been made to the prior year financial statements to conform to the current presentation. Operating results for any quarter are not necessarily indicative of the results for any other quarter or for the full year. These statements should be read in conjunction with the financial statements and notes thereto for Energizer for the year ended September 30, 2024 included in the Annual Report on Form 10-K dated November 19, 2024.

Recently Adopted Accounting Pronouncements And Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements - In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting: Improvements to Reportable Segment Disclosures. This guidance requires disclosure of incremental segment information on an annual and interim basis. This amendment is effective for our fiscal year ending September 30, 2025 and our interim periods within the fiscal year ending September 30, 2026. The disclosures required from this new pronouncement will be included within our fiscal 2025 annual Form 10-K.

Recently Issued Accounting Pronouncements - In December 2023, the FASB issued ASU No. 2023-09, Income Taxes: Improvements to Income Tax Disclosures. This guidance requires consistent categories and greater disaggregation of information in the rate reconciliation and disclosures of income taxes paid by jurisdiction. This amendment is effective for our fiscal year ending September 30, 2026. We are currently assessing the impact of this guidance on our disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. ASU 2024-03 requires disclosure of certain costs and expenses on an interim and annual basis in the notes to the financial statements. The guidance is effective for our fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. We are currently assessing the impact of this guidance on our disclosures.