Financial Instruments-Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
May 31, 2013
Derivative [Line Items]
Maximum time frame for foreign exchange contracts, months	7 months
Amount of accumulated other comprehensive income expected to be reclassified as an increase to earnings in next 12 months	$ 0.1
Interest Rate Swap [Member]
Derivative [Line Items]
Debt Instrument, Anticipated Issuance, Next Twelve Months	100
Interest Rate Swap [Member] \| Treasury Lock [Member]
Derivative [Line Items]
Interest rate contracts, Notional Amount	$ 100.0
Derivative, Fixed Interest Rate	1.94%

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant