Stock-based Compensation (Details Textual) (USD $)	9 Months Ended
Nov. 30, 2014 share_based_compensation_plan
Share Based Compensation (Textual) [Abstract]
Number Of Share-Based Compensation Plans	1azz_NumberOfShareBasedCompensationPlans
Shares authorized (shares)	1,500,000
Share for future issuance (shares)	1,473,148
Unrecognized compensation cost	$ 4,832,716
Employee Stock Purchase Plan [Member]
Share Based Compensation (Textual) [Abstract]
Term of offering under stock purchase plan	24 months
Granted option lower than	85.00%
Restricted common stock under plan	25,000
Common stock purchased during period (shares)	5,000
Share-based Compensation Arrangement, By Share-based Payment Award, Common Shares Estimated To Be Issued	77,973
Restricted Stock [Member]
Share Based Compensation (Textual) [Abstract]
Vesting ratably term	3 years
Stock Appreciation Rights SARS and Stock Option [Member]
Share Based Compensation (Textual) [Abstract]
Vesting ratably term	3 years
Term for the contract	7 years
Outstanding Average contractual term	5 years 0 months 31 days
Outstanding Aggregate intrinsic value	18,000,000
Average remaining contractual term	3 years 7 months 28 days
Aggregate remaining intrinsic value	$ 8,900,000

Maximum value of common stock participants have rights to purchase.

No definition available.

Name:	azz_MaximumValueOfCommonStockParticipantsHaveRightsToPurchase
Namespace Prefix:	azz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number Of Share-Based Compensation Plans

+ References

No definition available.

+ Details

Name:	azz_NumberOfShareBasedCompensationPlans
Namespace Prefix:	azz_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement, By Share-based Payment Award, Common Shares Estimated To Be Issued

+ References

No definition available.

+ Details

Name:	azz_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonSharesEstimatedToBeIssued
Namespace Prefix:	azz_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Share based compensation arrangement by share based payment award equity instruments options and other than options outstanding weighted average remaining contractual terms.

+ References

No definition available.

+ Details

Name:	azz_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsAndOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms
Namespace Prefix:	azz_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Share based compensation arrangement by share based payment award options and other than options exercisable intrinsic value1.

+ References

No definition available.

+ Details

Name:	azz_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndOtherThanOptionsExercisableIntrinsicValueOne
Namespace Prefix:	azz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Share based compensation arrangement by share based payment award options and other than options outstanding intrinsic value.

+ References

No definition available.

+ Details

Name:	azz_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndOtherThanOptionsOutstandingIntrinsicValue
Namespace Prefix:	azz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Share based compensation arrangement by share based payment award options other than options exercisable weighted average remaining contractual term one.

+ References

No definition available.

+ Details

Name:	azz_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherThanOptionsExercisableWeightedAverageRemainingContractualTermOne
Namespace Prefix:	azz_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	azz_ShareBasedCompensationTextualAbstract
Namespace Prefix:	azz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of offering under stock purchase plan.

+ References

No definition available.

+ Details

Name:	azz_TermOfOfferingUnderStockPurchasePlan
Namespace Prefix:	azz_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.D.2)

-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The highest quantity of shares an employee can purchase under the plan per period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=azz_StockAppreciationRightsSarsAndStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=azz_EmployeeStockPurchasePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: