Foreign Currency Exchange Rate, After Government Devaluation.

Name:	enr_ForeignCurrencyExchangeRateAfterGovernmentDevaluation
Namespace Prefix:	enr
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Inflation Rate Threshold To Determine a Highly Inflationary Economy.

+ Details

Name:	enr_InflationRateThresholdToDetermineHighlyInflationaryEconomy
Namespace Prefix:	enr
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Net Assets Subject to Foreign Currency Translation.

+ Details

Name:	enr_NetAssetsSubjectToForeignCurrencyTranslation
Namespace Prefix:	enr
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The foreign exchange rate used to translate amounts denominated in the functional currency to the reporting currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521

+ Details

Name:	us-gaap_ForeignCurrencyExchangeRateTranslation
Namespace Prefix:	us-gaap
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 52

-Paragraph 30

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30700-110894

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895

+ Details

Name:	us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

Name:	us-gaap_IntercompanyForeignCurrencyBalanceLineItems
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Venezuela (Details) In Millions, unless otherwise specified	12 Months Ended
Venezuela (Details) In Millions, unless otherwise specified	Sep. 30, 2011	Sep. 30, 2011 Venezuela Inflationary Accounting [Member] USD ($)	Sep. 30, 2010 Venezuela Inflationary Accounting [Member] USD ($)	Jan. 08, 2010 Venezuela Inflationary Accounting [Member]
Intercompany Foreign Currency Balance [Line Items]
Devaluation and other impacts		$ (1.8)	$ 18.3
Foreign Currency Transaction Gain (Loss), before Tax		1.8	(18.3)
Inflation Rate Threshold To Determine a Highly Inflationary Economy	100.00%
Net Assets Subject to Foreign Currency Translation			$ 39
Foreign Currency Exchange Rate, After Government Devaluation				4.30
Foreign Currency Exchange Rate, Translation			5.60