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Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Aug. 25, 2012 | Aug. 27, 2011
Changes in the carrying amount of goodwill [Rollforward] |  |
Beginning balance | $ 288,249 | $ 271,857
Goodwill recorded during the period | 29 | 16,014
Other | (141) | 378
Ending balance | 288,137 | 288,249
Indefinite-lived Intangible Assets by Segment [Line Items] |  |
Goodwill | 288,137 | 288,249
Intangible assets, net [Abstract] |  |
Gross Carrying Amount | 172,752 | 172,421
Accumulated Amortization | 122,221 | 111,516
Net Carrying Amount | 50,531 | 60,905
Total intangible assets and goodwill acquired | 456 | 26,367
Estimated future amortization expense [Abstract] |  |
2013 | 9,744 |
2014 | 7,592 |
2015 | 6,976 |
2016 | 6,427 |
2017 | 5,836 |
Thereafter | 13,956 |
Total | 50,531 |
Customer Contracts [Member] |  |
Intangible assets, net [Abstract] |  |
Gross Carrying Amount | 144,842 | 144,497
Accumulated Amortization | 96,262 | 86,607
Net Carrying Amount | 48,580 | 57,890
Weighted Average Life in Years | 11.6 | 14.4
Total intangible assets and goodwill acquired | 402 | 9,588
Other Intangible Assets [Member] |  |
Intangible assets, net [Abstract] |  |
Gross Carrying Amount | 27,910 | 27,924
Accumulated Amortization | 25,959 | 24,909
Net Carrying Amount | 1,951 | 3,015
Weighted Average Life in Years | 13.8 | 5.1
Total intangible assets and goodwill acquired | 25 | 765
US and Canadian Rental and Cleaning [Member] |  |
Changes in the carrying amount of goodwill [Rollforward] |  |
Ending balance | 283,400 |
Indefinite-lived Intangible Assets by Segment [Line Items] |  |
Goodwill | 283,400 |
Specialty Garments [Member] |  |
Changes in the carrying amount of goodwill [Rollforward] |  |
Ending balance | 4,100 |
Indefinite-lived Intangible Assets by Segment [Line Items] |  |
Goodwill | 4,100 |
First Aid [Member] |  |
Changes in the carrying amount of goodwill [Rollforward] |  |
Ending balance | 600 |
Indefinite-lived Intangible Assets by Segment [Line Items] |  |
Goodwill | $ 600 |

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- Definition The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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