Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Derivative Instruments, Realized And Unrealized Gain (Loss) Included In Accumulated Other Comprehensive Income, Net

+ References

No definition available.

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- Definition

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+ References

No definition available.

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- Definition

Current period adjustment in other comprehensive income reflecting gains or losses on foreign currency transactions that are designated as, and are effective as, hedges of a net investment in a foreign entity, net of tax effect.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section 45

-Paragraph 20

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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Financial Derivatives (Narrative) (Details) € in Millions, ZAR in Millions, $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	May. 31, 2015 USD ($)	May. 31, 2014 USD ($)	May. 31, 2015 USD ($)	May. 31, 2014 USD ($)	Aug. 31, 2014 USD ($)	May. 31, 2015 ZAR	May. 31, 2015 EUR (€)	Aug. 31, 2014 ZAR	Aug. 31, 2014 EUR (€)	May. 31, 2014 ZAR	May. 31, 2014 EUR (€)
Derivatives, Fair Value [Line Items]
Realized and unrealized gains included in AOCI			$ 5.6	$ 1.3	$ 2.0
Euro [Member]
Derivatives, Fair Value [Line Items]
Outstanding foreign currency forward contracts to sell \| €							€ 29.2		€ 28.9		€ 28.9
Rand [Member]
Derivatives, Fair Value [Line Items]
Outstanding foreign currency forward contracts to sell \| ZAR						ZAR 43.0		ZAR 43.0		ZAR 43.0
Foreign Currency Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative contracts resulting in an after-tax net gain (loss)	$ 2.3	$ (0.1)	4.1	(1.0)
Outstanding foreign currency forward contracts to sell	$ 4.8	$ 4.5	$ 4.8	$ 4.5	$ 4.9