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Equivalent number of shares expected to vest under share-based compensation arrangement as of the balance sheet date.

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Frequency of vesting of share-based compensation awards.

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Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Mark-to-market Income

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Discount rate from fair value on offering date that participants pay for shares.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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.

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

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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STOCK-BASED COMPENSATION PLANS (Narrative) (Details) $ in Millions	12 Months Ended
	Aug. 31, 2019 USD ($) Interval shares	Aug. 31, 2018 USD ($) shares	Aug. 31, 2017 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $	$ 25.1	$ 23.9	$ 30.3
Total unrecognized compensation cost \| $	$ 15.9
Period of unrecognized compensation to be recognized	3 years
Shares available for future grants	8,021,005
Fair value of shares vested \| $	$ 19.9	30.3	24.4
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Mark-to-market income on liability-treated awards \| $	$ (1.0)
Stock compensation expense resulting from modification and change in stock value \| $		$ 0.9	$ 2.8
Restricted stock awards and performance stock units, granted, shares	889,238	667,341	1,303,976
Restricted stock units \| United States
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting frequency \| Interval	3
Restricted stock units \| Non-U.S.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting frequency \| Interval	3
Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards and performance stock units, granted, shares	483,984	367,514	576,286
Performance Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage	50.00%
Performance Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage	200.00%
Performance Awards \| EBITDA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage that performance targets are weighted	75.00%
Performance Awards \| Relative total stockholder return
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage that performance targets are weighted		25.00%	25.00%
Liability awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards and performance stock units, granted, shares	374,281	322,695
Equivalent number of awards outstanding	718,223
Equivalent number of shares expected to vest	683,921
Stock appreciation rights and stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock appreciation rights and stock options, granted, number		0	0
Cash-settled stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equivalent shares of SARs outstanding	0
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants	2,753,214
Maximum number of shares per employee	400
Purchase discount from market price	15.00%	15.00%	15.00%