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Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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May 31, 2013 segment
Significant Accounting Policies [Line Items] |
Number of operating segments (segment) | 4
Restricted cash | $ 28.5
Uniforms in service [Member] |
Significant Accounting Policies [Line Items] |
Inventories useful life, maximum (months) | 18 months
Other rental items [Member] |
Significant Accounting Policies [Line Items] |
Inventories useful life, minimum (months) | 8 months
Inventories useful life, maximum (months) | 60 months
Minimum [Member] | Service contacts and other assets [Member] |
Significant Accounting Policies [Line Items] |
Service contracts and other assets useful lives (years) | 5 years
Maximum [Member] | Service contacts and other assets [Member] |
Significant Accounting Policies [Line Items] |
Service contracts and other assets useful lives (years) | 10 years

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- Definition Inventories, Useful Life, Maximum + References No definition available. + Details
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- Definition Inventories, Useful Life, Minimum + References No definition available. + Details
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- Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 80 -Subparagraph Exhibit 4-8, 3 -IssueDate 2006-05-01 -Chapter 4 -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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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