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Debt - Additional Information (Detail) € in Millions, $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2017 EUR (€) | Jun. 30, 2017 | May 06, 2017 USD ($) | Jan. 13, 2017 USD ($) | Feb. 27, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 5,870.9 | $ 5,635.6 |  |  |  |  |  |
Gain (Loss) on Extinguishment of Debt |  | 8.0 |  |  |  |  |  |
Repayments of Other Debt | 261.1 | 1,090.8 | $ 3,050.5 |  |  |  |  |
Write-off of discounts and debt issuance costs on retired debt | 2.5 | 5.8 | 12.8 |  |  |  |  |
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Two | 897.0 |  |  |  |  |  |  |
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Five | 2,154.2 |  |  |  |  |  |  |
Payments of Debt Issuance Costs | 7.0 | 9.3 | 44.8 |  |  |  |  |
Other assets | 137.2 | 138.3 |  |  |  |  |  |
Interest Expense | 360.1 | 402.5 | 407.8 |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net | 20.7 | 22.8 |  |  |  |  |  |
Other Deferred Costs, Gross | 76.1 | 87.0 |  |  |  |  |  |
Amortization of debt discount | $ 1.8 | $ 2.8 | 4.8 |  |  |  |  |
Document Period End Date | Sep. 30, 2017 |  |  |  |  |  |  |
Euro Term Loan, Due June 23, 2022 [Member] | Interest Rate Cap [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate | 2.75% |  |  |  |  |  |  |
Margin Loan, due July 13, 2018 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Security Owned and Pledged as Collateral, Fair Value | $ 4.2 |  |  |  |  |  |  |
Margin Loan, due July 13, 2018 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | 50.0 |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  | $ 150.0 |
Deferred Finance Costs, Gross | $ 1.1 |  |  |  |  |  |  |
Margin Loan, due July 13, 2018 [Member] | Interest Rate Cap [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 3.70% | 0.00% |  | 3.70% |  |  | 2.35% |
Nine point zero percent senior secured notes [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 100.0 |  |  |  |  |  |  |
FGL [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Percentage Of Ownership Interest | 80.40% |  |  | 80.40% |  | 50.00% |  |
HGI |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options | $ 6.5 |  |  |  |  |  |  |
Long-term debt | 1,718.3 | $ 1,711.2 |  |  |  |  |  |
Payments of Debt Issuance Costs | 0.0 | 0.0 | 6.8 |  |  |  |  |
Interest Expense | 144.1 | 143.1 | 124.2 |  |  |  |  |
Amortization of debt discount | 1.0 | $ 3.3 | 1.8 |  |  |  |  |
HGI | 7.875% Senior Secured Notes, due July 15, 2019 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Two | $ 864.4 |  |  |  |  |  |  |
HGI | 7.875% Senior Secured Notes, due July 15, 2019 | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt, interest rate | 7.875% | 7.90% |  | 7.875% |  |  |  |
HGI | Seven Point Seven Five Percent Senior Unsecured Notes [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt |  | $ 890.0 |  |  |  |  |  |
Long-term debt, interest rate | 7.75% | 7.75% |  | 7.75% |  |  |  |
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Five | $ 890.0 |  |  |  |  |  |  |
Redemption price of debt instrument to percentage of principal amount | 100.00% |  |  |  |  |  |  |
Spectrum Brands [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Percentage Of Ownership Interest | 59.60% |  |  | 59.60% |  |  |  |
Spectrum Brands [Member] | Four Point Zero Percent Senior Notes [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt |  | $ 425.0 |  |  |  |  |  |
Redemption price of debt instrument to percentage of principal amount | 100.00% |  |  |  |  |  |  |
Debt instrument principal amount redemption percentage | 35.00% |  |  |  |  |  |  |
Minimum percentage of aggregate outstanding principal held by registered holders | 25.00% |  |  |  |  |  |  |
Spectrum Brands [Member] | Four Point Zero Percent Senior Notes [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt, interest rate | 4.00% | 4.00% |  | 4.00% |  |  |  |
Deferred Finance Costs, Gross | $ 7.7 |  |  |  |  |  |  |
Spectrum Brands [Member] | Four Point Zero Percent Senior Notes [Member] | Unsecured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt, interest rate | 4.00% | 4.00% |  | 4.00% |  |  |  |
Spectrum Brands [Member] | Five Point Seven Five Percent Senior Notes Due July 15 2025 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 1,000.0 | $ 1,000.0 |  |  |  |  |  |
Long-term debt, interest rate | 5.75% | 5.80% |  | 5.75% |  |  |  |
Spectrum Brands [Member] | CAD Term Loan, Due June 23, 2022 [Member] | Interest Rate Floor [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.75% |  |  | 1.75% |  |  |  |
Spectrum Brands [Member] | CAD Term Loan, Due June 23, 2022 [Member] | Maximum | ABR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 2.50% |  |  | 2.50% |  |  |  |
Spectrum Brands [Member] | Euro Term Loan, Due June 23, 2022 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest Expense, Debt | $ 0.6 |  |  |  |  |  |  |
Spectrum Brands [Member] | Euro Term Loan, Due June 23, 2022 [Member] | Interest Rate Floor [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.75% |  |  | 0.75% |  |  |  |
Spectrum Brands [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount | $ 0.0 |  |  |  |  |  |  |
Spectrum Brands [Member] | Revolving Credit Facility [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Deferred Finance Costs, Gross | $ 5.7 |  |  |  |  |  |  |
Spectrum Brands [Member] | Revolving Credit Facility [Member] | Minimum [Member] | ABR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.75% |  |  | 0.75% |  |  |  |
Spectrum Brands [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Interest [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.75% |  |  | 1.75% |  |  |  |
Spectrum Brands [Member] | Revolving Credit Facility [Member] | Maximum | ABR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.25% |  |  | 1.25% |  |  |  |
Spectrum Brands [Member] | Revolving Credit Facility [Member] | Maximum | Interest [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 2.25% |  |  | 2.25% |  |  |  |
Spectrum Brands [Member] | 6.375% Senior Notes due 2020 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Write-off of discounts and debt issuance costs on retired debt | $ 5.8 |  |  |  |  |  |  |
Spectrum Brands [Member] | 6.375% Senior Notes due 2020 | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 0.0 | $ 129.7 | 520.0 |  |  |  |  |
Long-term debt, interest rate | 6.375% | 6.40% |  | 6.375% |  |  |  |
Debt Instrument, Repurchase Amount | $ 390.3 |  |  |  |  |  |  |
Interest Expense, Debt | 4.6 |  |  |  |  |  |  |
Interest Expense, Other | 1.9 |  |  |  |  |  |  |
Spectrum Brands [Member] | 6.625% Notes | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 570.0 | $ 570.0 |  |  |  |  |  |
Long-term debt, interest rate | 6.625% | 6.60% |  | 6.625% |  |  |  |
Deferred Finance Costs, Gross | $ 14.1 |  |  |  |  |  |  |
Spectrum Brands [Member] | Five Point Seven Five Percentage Senior Notes [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Deferred Finance Costs, Gross | 19.7 |  |  |  |  |  |  |
Spectrum Brands [Member] | Six Point One Two Five Percentage Senior Notes [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 250.0 | $ 250.0 |  |  |  |  |  |
Long-term debt, interest rate | 6.125% | 6.10% |  | 6.125% |  |  |  |
Redemption price of debt instrument to percentage of principal amount | 100.00% |  |  |  |  |  |  |
Debt instrument principal amount redemption percentage | 35.00% |  |  |  |  |  |  |
Minimum percentage of aggregate outstanding principal held by registered holders | 25.00% |  |  |  |  |  |  |
Spectrum Brands [Member] | Six Point One Two Five Percentage Senior Notes [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Deferred Finance Costs, Gross | $ 4.6 |  |  |  |  |  |  |
Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest Expense, Debt | 1.0 |  |  |  |  |  |  |
Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest Expense, Debt | 0.6 |  |  |  |  |  |  |
Other Deferred Costs, Gross | $ 2.7 |  |  |  |  |  |  |
Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] | Interest Rate Cap [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 2.50% |  |  | 2.50% |  |  |  |
Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] | ABR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.75% |  |  | 0.75% |  |  |  |
Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] | Minimum [Member] | Interest Rate Cap [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.00% |  |  | 1.00% |  |  |  |
Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] | Maximum | ABR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.50% |  |  | 1.50% |  |  |  |
Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] | Maximum | Interest [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 3.50% |  |  | 3.50% |  |  |  |
Spectrum Brands [Member] | Abl Revolving Credit Facility [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | $ 680.5 |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 18.0 |  |  |  |  |  |  |
Spectrum Brands [Member] | Abl Revolving Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving Loan Facility | 500.0 |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 700.0 |  |  |  |  |  |  |
Line of Credit Facility, Fair Value of Amount Outstanding | $ 0.0 | $ 0.0 |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.00% | 0.00% |  | 0.00% |  |  |  |
Other Deferred Costs, Gross | $ 2.6 |  |  |  |  |  |  |
Spectrum Brands Foreign Subsidiaries [Member] | Abl Revolving Credit Facility [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | 1.5 |  |  |  |  |  |  |
HGI Energy Holdings, LLC | Nine point zero percent senior secured notes [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Gain (Loss) on Extinguishment of Debt |  | $ 8.0 |  |  |  |  |  |
Long-term debt, interest rate |  | 9.00% |  |  |  |  |  |
HGI Energy Holdings, LLC | Zero point zero seven one percent [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | 92.0 |  |  |  |  |  |  |
HGI Energy Holdings, LLC | Zero point seven one percent [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 92.0 | $ 92.0 |  |  |  |  |  |
Long-term debt, interest rate | 1.50% | 0.70% |  | 1.50% | 0.70% |  |  |
Salus Capital Partners LLC |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 22.2 | $ 30.3 |  |  |  |  |  |
Cash | 2.0 |  |  |  |  |  |  |
Salus Capital Partners LLC | Unaffiliated long-term debt of consolidated variable-interest entity |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 28.9 | $ 39.7 |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.00% | 0.00% |  | 0.00% |  |  |  |
Salus Capital Partners LLC | Secured Borrowings Related to non-qualifying participating loan interests [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt |  | $ 2.0 |  |  |  |  |  |
Long-term debt, interest rate | 0.00% | 0.00% |  | 0.00% |  |  |  |
Salus Capital Partners LLC | Collateralized Loan Obligations [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  | $ 578.5
Euro Member Countries, Euro | Spectrum Brands [Member] | Four Point Zero Percent Senior Notes [Member] | Unsecured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 501.0 | $ 477.0 |  | € 425.0 |  |  |  |
Euro Member Countries, Euro | Spectrum Brands [Member] | Euro Term Loan, Due June 23, 2022 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | 300.0 | 63.0 |  |  |  |  |  |
United States of America, Dollars | Spectrum Brands [Member] | CAD Term Loan, Due June 23, 2022 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | 59.0 | $ 54.9 |  |  |  |  |  |
United States of America, Dollars | Spectrum Brands [Member] | Euro Term Loan, Due June 23, 2022 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 0.0 |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.00% | 3.50% |  | 0.00% |  |  |  |
United States of America, Dollars | Spectrum Brands [Member] | Term Loan, Due June 23, 2022 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 1,244.2 | $ 1,005.5 | $ 1,450.0 |  |  | $ 250.0 |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.00% | 3.60% |  | 0.00% |  |  |  |
Canada, Dollars | Spectrum Brands [Member] | CAD Term Loan, Due June 23, 2022 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 75.0 |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 4.90% | 4.60% |  | 4.90% |  |  |  |
6.375% Senior Notes due 2020 | Spectrum Brands [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Deferred Finance Costs, Gross | $ 6.5 |  |  |  |  |  |  |
Debt Instrument, Unamortized Premium, Noncurrent | 15.6 |  |  |  |  |  |  |
FGL [Member] | Salus Capital Partners LLC |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term debt | $ 48.1 | $ 65.9 |  |  |  |  |  |
FGL [Member] | Salus Capital Partners LLC | Unaffiliated long-term debt of consolidated variable-interest entity |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 0.00% | 0.00% |  | 0.00% |  |  |  |
Insurance Segment [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Gain (Loss) on Extinguishment of Debt |  | $ 8.0 |  |  |  |  |  |

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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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