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Significant Accounting Policies (Policies) | 12 Months Ended
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May 31, 2013
Accounting Policies [Abstract] |
Principals of consolidation | The consolidated financial statements include the accounts of Cintas controlled majority-owned subsidiaries and any entities over which Cintas has control. Intercompany balances and transactions have been eliminated as appropriate.
Use of estimates | The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue recognition | Rental revenue, which is recorded in the Rental Uniforms and Ancillary Products operating segment, is recognized when services are performed. Other Services revenue, which is recorded in the Uniform Direct Sales, First Aid, Safety and Fire Protection Services and Document Management Services operating segments, is recognized when either services are performed or when products are shipped and the title and risks of ownership pass to the customer.
Cost of rental unifroms and ancillary products | Cost of rental uniforms and ancillary products consists primarily of production expenses, delivery expenses and the amortization of in service inventory, including uniforms, mats, mops, shop towels and other ancillary items. The Rental Uniforms and Ancillary Products operating segment inbound freight charges, purchasing and receiving costs, inspection costs, warehousing costs and other costs of distribution are included in the cost of rental uniforms and ancillary products.
Cost of other services | Cost of other services consists primarily of cost of goods sold (predominantly uniforms and first aid products), delivery expenses and distribution expenses. Cost of other services includes inbound freight charges, purchasing and receiving costs, inspection costs, warehousing costs and other costs of distribution.
Selling and administrative expenses | Selling and administrative expenses consist primarily of sales labor and commissions, management and administrative labor, payroll taxes, medical expense, insurance expense, legal and professional costs and amortization of finite-lived intangible assets.
Cash and cash equivalents | Cintas considers all highly liquid investments with a maturity of three months or less, at date of purchase, to be cash equivalents.
Marketable securities | Marketable securities are comprised of fixed income securities and are classified as available-for-sale.
Accounts receivable | Accounts receivable is comprised of amounts owed through product shipments and services provided and is presented net of an allowance for doubtful accounts. The allowance is an estimate based on historical rates of collectability and allowances for specific accounts identified as uncollectible. The allowance that is an estimate based on Cintas' historical rates of collectability is recorded for overdue amounts, beginning with a nominal percentage and increasing substantially as the account ages. The amount provided as the account ages will differ slightly between the Rental Uniforms and Ancillary Products operating segment and the three other operating segments because of differences in customers served and the nature of each operating segment. When an account is considered uncollectible, it is written off against the allowance for doubtful accounts.
Inventories | Inventories are valued at the lower of cost (first-in, first-out) or market. Cintas applies a commonly accepted practice of using inventory turns to apply variances between actual and standard costs to the inventory balances. The judgments and estimates used to calculate inventory turns will have an impact on the valuation of inventories at the lower of cost or market. Inventory is comprised of the following amounts:
(In thousands) | 2013 |  | 2012
Raw materials | $ | 19,800 |  |  | $ | 19,138 |
Work in process | 17,353 |  |  | 13,052 |
Finished goods | 203,287 |  |  | 219,015 |
| $ | 240,440 |  |  | $ | 251,205 |
Inventories are recorded net of reserves for obsolete inventory of $29.5 million and $29.4 million as of May 31, 2013 and 2012, respectively. The inventory obsolescence reserve is determined by specific identification, as well as an estimate based on Cintas' historical rates of obsolescence.
Uniforms and other rental items in service | These items are valued at cost less amortization, calculated using the straight-line method. Uniforms in service (other than cleanroom and flame resistant clothing) are amortized over their useful life of 18 months. Other rental items, including shop towels, mats, mops, cleanroom garments, flame resistant clothing, linens and restroom dispensers, are amortized over their useful lives, which range from 8 to 60 months. The amortization rates used are based on industry experience, Cintas' specific experience and wear tests performed by Cintas. These factors are critical to determining the amount of in service inventory that is presented in the consolidated financial statements.
Property and equipment | Property and equipment is stated at cost, less accumulated depreciation. Depreciation is calculated using the straight-line method primarily over the following estimated useful lives of the assets based on industry and company specific experience, in years:
Buildings | 30 to 40
Building improvements | 5 to 20
Equipment | 3 to 10
Leasehold improvements | 2 to 15
Long-lived assets | When events or circumstances indicate that the carrying amount of long-lived assets may not be recoverable, the estimated undiscounted future cash flows are compared to the carrying amount of the assets. If the estimated undiscounted future cash flows are less than the carrying amount of the assets, an impairment loss is recorded based on the excess of the carrying amount of the assets over their respective fair values. Fair value is generally determined by discounted cash flows or based on prices of similar assets, as appropriate. Long-lived assets that are held for sale are reported at the lower of the carrying amount or the estimated fair value, less estimated costs to sell.
Goodwill | Goodwill is separately disclosed from other intangible assets on the consolidated balance sheet and not amortized. Cintas completes an annual goodwill impairment test which includes the determination of the estimated fair value of its reporting units. The methodology used is consistent with prior years. Based on the results of the annual impairment test, Cintas was not required to recognize an impairment of goodwill for the fiscal years ended May 31, 2013, 2012 or 2011. Cintas will continue to perform impairment tests as of March 1 in future years and when indicators of impairment exist, if any, are noted.
Service contracts and other assets | Service contracts and other assets, which consist primarily of noncompete and consulting agreements obtained through acquisitions of businesses, are amortized by use of the straight-line method over the estimated lives of the agreements, which are generally 5 to 10 years. Certain noncompete agreements, as well as all service contracts, require that a valuation be determined using a discounted cash flow model. The assumptions and judgments used in these models involve estimates of cash flows and discount rates, among other factors. Because of the assumptions used to value these intangible assets, actual results over time could vary from original estimates. Impairment of service contracts and other assets is accomplished through specific identification. No impairment has been recognized by Cintas for the fiscal years ended May 31, 2013, 2012 or 2011.
Accrued liabilities | Current accrued liabilities are recorded when it is probable that a liability has occurred and the amount of the liability can be reasonably estimated. Current accrued liabilities include the following amounts:
(In thousands) | 2013 |  | 2012
General insurance liabilities | $ | 96,930 |  |  | $ | 82,611 |
Employee benefit related liabilities | 59,221 |  |  | 56,134 |
Taxes and related liabilities | 7,776 |  |  | 8,523 |
Accrued interest | 26,816 |  |  | 29,523 |
Other | 81,078 |  |  | 84,651 |
| $ | 271,821 |  |  | $ | 261,442 |
General insurance liabilities represent the estimated ultimate cost of all asserted and unasserted claims incurred, primarily related to worker's compensation, auto liability and other general liability exposure through the consolidated balance sheet date. Cintas records an increase or decrease in selling and administrative expenses related to development of prior claims, higher claims activity and other environmental factors in the period in which it becomes known. Long-term accrued liabilities consists primarily of reserves associated with unrecognized tax benefits, which are described in more detail in Note 7 entitled Income Taxes, and retirement obligations, which are described in more detail in Note 9 entitled Defined Contribution Plans.
Stock-based compensation | Compensation expense is recognized for all share-based payments to employees, including stock options and restricted stock awards, in the consolidated statements of income based on the fair value of the awards that are granted. The fair value of stock options is estimated at the date of grant using the Black-Scholes option-pricing model. Measured compensation cost, net of estimated forfeitures, is recognized on a straight-line basis over the vesting period of the related share-based compensation award.
Derivatives and hedging activites | Cintas formally documents all relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking various hedge transactions. Derivatives are recorded at fair value on the consolidated balance sheet, and gains and losses are recorded as adjustments to earnings or other comprehensive income, as appropriate.
Other accounting pronouncements | In February 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2013-02 (ASU 2013-02), Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. The update requires disclosure of amounts reclassified out of accumulated other comprehensive income (AOCI) by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income, but only if the amount reclassified is required to be reclassified in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about these amounts. The guidance is effective prospectively for interim and annual financial periods beginning after December 15, 2012. This new guidance is effective for Cintas in the first quarter of fiscal 2014. Cintas does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. 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- Definition Disclosure of accounting policy for recognizing and measuring the impairment of long-lived assets. An entity also may disclose its accounting policy for long-lived assets to be sold. This policy excludes goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section CC -Subsection 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7-15, 26, 30-37 -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. + Details
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- Definition Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Paragraph 3, 5-10, 15, 16, 17 -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 SEC -Name Financial Reporting Release (FRR) -Number 206 -Paragraph b -Subparagraph i, ii -Chapter 2 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 4: 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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 9 -Chapter 3 -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 7: 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(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6386783&loc=d3e4492-108314 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2126999 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6386783&loc=d3e4556-108314 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 81-1 -Paragraph 69-75 -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. + Details
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