Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details) - USD ($) $ in Millions	12 Months Ended
May 29, 2016	Aug. 28, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	$ 440.0	$ 440.2
Fair value of long-term debt	499.5	$ 525.3
Impairment of long-lived assets held-for-use	5.4
Impairment of long-lived assets held-for-sale	0.6
Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Nonfinancial assets fair value disclosure	5.4
Reported Value Measurement \| Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets Held-for-sale, Long Lived, Fair Value Disclosure	17.5
Estimate of Fair Value Measurement \| Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets Held-for-sale, Long Lived, Fair Value Disclosure	$ 16.9

Nonfinancial Assets Fair Value Disclosure

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- Definition

Fair value portion of assets classified as held for sale.

+ References

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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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 aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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