INVENTORIES, NET (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Feb. 28, 2015	Feb. 28, 2015	Aug. 31, 2014
Inventory Disclosure [Abstract]
Percentage of total net inventories valued at LIFO	57.00%us-gaap_PercentageOfLIFOInventory	57.00%us-gaap_PercentageOfLIFOInventory	44.00%us-gaap_PercentageOfLIFOInventory
LIFO inventory reserves	$ 120.2us-gaap_InventoryLIFOReserve	$ 120.2us-gaap_InventoryLIFOReserve	$ 198.8us-gaap_InventoryLIFOReserve
Pre-tax LIFO income	72.5	78.7
Raw materials before LIFO reserves	$ 82.6us-gaap_InventoryRawMaterials	$ 82.6us-gaap_InventoryRawMaterials	$ 84.3us-gaap_InventoryRawMaterials

Increase (Decrease) to Income Before Tax Resulting from Change in LIFO Inventory Valuation Method

No definition available.

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- Details

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- Definition

Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost.

+ 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 210.5-02.6(c))

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph c

-Article 5

+ Details

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- Definition

Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(4))

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

+ Details

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- Definition

The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

+ References

No definition available.

+ Details

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