Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Goodwill, Service Contracts and Other Assets [Abstract] -- None. No documentation exists for this element. -- Goodwill, Service Contracts and Other Assets Goodwill Service Contracts and Other Assets Disclosure [Text Block] This element encapsulates entire disclosures pertaining to goodwill, service contracts and other assets. Condensed Financial Information of Parent Company Only Disclosure [Abstract] Schedule of Condensed Financial Statements [Table] Schedule of Condensed Financial Statements [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Cintas Corporation [Member] Parent Company [Member] Corp. 2 [Member] Subsidiaries [Member] Subsidiary Guarantors [Member] Guarantor Subsidiaries [Member] Non-Guarantors [Member] Non-Guarantor Subsidiaries [Member] Eliminations [Member] Consolidation, Eliminations [Member] Condensed Consolidating Financial Statements Condensed Financial Statements, Captions [Line Items] Revenue: Revenues [Abstract] Rental uniforms and ancillary products Revenue Rental Uniforms and Ancillary Products Revenue earned from the Rental Uniforms and Ancillary Products operating segment. Other services Revenue, Other Services Revenue earned on providing other services, which is recorded in the Uniform Direct Sales, First Aid, Safety and Fire Protection Services and Document Management Services operating segments. It excludes revenue earned from the Rental Uniforms and Ancillary Products operating segment. Equity in net income of affiliates Income (Loss) from Equity Method Investments Total revenue Revenues Costs and expenses (income): Costs and Expenses [Abstract] Cost of rental uniforms and ancillary products Cost of Rental Uniforms and Ancillary Products The aggregate costs related to the rental of uniforms and ancillary products, including the costs of the products and the costs of the services rendered during the reporting period. Cost of other services Cost of Other Services The aggregate costs related to the sale of and servicing of other services such as uniform direct sales, first aid, safety and fire protection services and document management services, including the costs of the products and the costs of the services rendered during the reporting period. Selling and administrative expenses Selling, General and Administrative Expense Operating income Operating Income (Loss) Interest income Investment Income, Interest Interest expense (income) Interest Expense Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income taxes Income Tax Expense (Benefit) Net income Net Income (Loss) Attributable to Parent Supplemental Guarantor Information Condensed Financial Information of Parent Company Only Disclosure [Text Block] Schedule of Finite-Lived Intangible Assets by Major Class [Table] Schedule of Finite-Lived Intangible Assets by Major Class [Table] Statement, Business Segments [Axis] Statement, Business Segments [Axis] Segment [Domain] Segment [Domain] Rental Uniforms and Ancillary Products [Member] Rental Uniforms and Ancillary Products [Member] Represents the entity's Rental Uniforms and Ancillary Products reporting segment. Uniform Direct Sales [Member] Uniform Direct Sales [Member] Represents the entity's Uniform Direct Sales reporting segment. First Aid, Safety and Fire Protection [Member] First Aid Safety and Fire Protection [Member] Represents the entity's First Aid, Safety and Fire Protection reporting segment. Document Management [Member] Document Management [Member] Represents the entity's Document Management reporting segment. Service contracts Finite-Lived Intangible Assets [Line Items] Service contracts [Roll Forward] Finite Lived Intangible Assets, Net [Roll Forward] Balance at the beginning of the period Finite-Lived Intangible Assets, Net Service contracts acquired Acquired Finite-lived Intangible Asset, Amount Service contracts amortization Finite Lived Intangible Assets Amortization Amount of reduction of finite-lived intangible assets due to amortization during the period. Foreign currency translation Finite Lived Intangible Assets, Translation Adjustments This element represents the increase (decrease) to the recorded value of finite-lived intangible assets for foreign currency translation adjustments. Balance at the end of the period Net income Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Change in fair value of derivatives(1) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Amortization of interest rate lock agreements Other Comprehensive Income (Loss), Amortization of Interest Rate Lock Agreements, Period Decrease Increase Other Comprehensive Income (Loss), Amortization of Interest Rate Lock Agreements, Period Decrease Increase Change in fair value of available-for-sale securities(2) Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Corporate [Member] Unallocated Amount to Segment [Member] Disclosures related to operating segments Segment Reporting Information [Line Items] Number of Operating Segments Number of Operating Segments Represents the number of operating segments of the reporting entity. Revenue Income before income taxes Total assets Assets Changes in the carrying amount of goodwill by operating segment Schedule of Goodwill [Table Text Block] Changes in the carrying amount of service contracts by operating segment Schedule of Service Contracts Finite Lived Intangible Assets by Operating Segment [Table Text Block] Tabular disclosure of changes in the carrying amount of service contracts finite-lived intangible assets by operating segment. Information regarding service contracts and other assets Schedule of Finite Lived Intangible Assets and Other Assets by Major Class [Table Text Block] Tabular disclosure of amortizable intangible assets and other assets, in total and by major class, including gross carrying amount and accumulated amortization. Statement of Cash Flows [Abstract] Statement [Table] Statement [Table] Statement, Scenario [Axis] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation Depreciation Amortization of intangible assets Amortization Stock-based compensation Share-based Compensation Deferred income taxes Increase (Decrease) in Deferred Income Taxes Change in current assets and liabilities, net of acquisitions of businesses: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Inventories, net Increase (Decrease) in Inventories Uniforms and other rental items in service Increase (Decrease) in Uniforms and Other Rental Items in Service This element represents the increase (decrease) in cash flows related to uniforms and other rental items in service for the current reporting year. Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued compensation and related liabilities Increase (Decrease) in Employee Related Liabilities Accrued liabilities Increase (Decrease) in Accrued Liabilities Income taxes payable Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Proceeds from redemption of marketable securities Proceeds from Sale and Maturity of Marketable Securities Purchase of marketable securities and investments Payments to Acquire Investments Acquisitions of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Other, net Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Proceeds from issuance of debt Proceeds from Issuance of Long-term Debt Repayment of debt Repayments of Long-term Debt Proceeds from exercise of stock-based compensation awards Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Repurchase of common stock Payments for Repurchase of Common Stock Other, net Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Net decrease in cash and cash equivalents Net Cash Provided by (Used in) Continuing Operations Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Income Statement [Abstract] Costs and expenses: Interest income Interest expense Basic earnings per share (in dollars per share) Earnings Per Share, Basic Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Dividends declared per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Schedule of Other Assets [Table] Schedule of Other Assets [Table] This element represents details of other assets. Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Service Contracts [Member] Service Agreements [Member] Other Assets [Axis] Other Assets [Axis] This element represents other noncurrent assets. Other Assets [Domain] Other Assets [Domain] This element represents details of other assets. Noncompete agreements [Member] Noncompete Agreements [Member] Investments [Member] Investments [Member] Other [Member] Other Miscellaneous Assets [Member] This element represents details of assets, which have not been itemized or categorized in footnotes to financial statements and are a component of other assets. Information regarding service contracts and other assets Other Assets [Line Items] Service contracts, Carrying Amount Finite-Lived Intangible Assets, Gross Service contracts, Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Service contracts, Net Other Assets, Carrying Amount Other Assets, Gross This element represents the gross carrying amount, as of the balance sheet date, of finite-lived assets and other noncurrent assets. Other Assets, Accumulated Amortization Accumulated Amortization of Other Assets This element represents the accumulated amortization of finite-lived assets and other noncurrent assets. Other Assets, Net Other Assets, Noncurrent Statement of Other Comprehensive Income [Abstract] Statement of Other Comprehensive Income [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Balance at the beginning of the period Goodwill Goodwill acquired Goodwill, Acquired During Period Foreign currency translation Goodwill, Translation Adjustments Balance at the end of the period Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic and Diluted by Stock Class [Table] Schedule of Earnings Per Share, Basic and Diluted by Stock Class [Table] Complete disclosure pertaining to an entity's basic and diluted earnings per share. Deferred Compensation Arrangement with Individual, Share-based Payments, by Type of Deferred Compensation [Axis] Deferred Compensation Arrangement with Individual, Share-based Payments, by Type of Deferred Compensation [Axis] Type of Deferred Compensation [Domain] Type of Deferred Compensation [Domain] Employee Payroll Taxes Due on Restricted Stock [Member] Employee Payroll Taxes Due on Restricted Stock [Member] Employee Payroll Taxes Due on Restricted Stock [Member] Earnings Per Share, Basic and Diluted [Line Items] Earnings Per Share, Basic and Diluted [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Stock Repurchase, Program New Authorized Amount Stock Repurchase, Program New Authorized Amount The new amount authorized by the entity's Board of Directors under a stock repurchase plan. Stock Repurchased During Period, Shares (in shares) Stock Repurchased During Period, Shares Stock Repurchased During Period, Value Stock Repurchased During Period, Value Stock Repurchased During Period, Average Price (in dollars per share) Stock Repurchased During Period, Average Price Represents the average price of common stock that has been repurchased during the period under share repurchase program. Earnings per Share Earnings Per Share [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Raw materials Inventory, Raw Materials, Net of Reserves Work in process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Inventories, net Inventory, Net Adjustments to reconcile net income to net cash provided by (used in) operating activities: Prepaid expenses and other Income taxes payable Capital expenditures Other Exercise of stock-based compensation awards Other Amortized cost basis, marketable securities Available-for-sale Securities, Amortized Cost Basis Long-term notes Notes Payable, Noncurrent Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Computation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized tax benefits, decrease in accrued interest Unrecognized Tax Benefits, Interest on Income Taxes Expense Unrecognized tax benefits could decrease by approximately Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Schedule of inventory Schedule of Inventory, Current [Table Text Block] Condensed Consolidating Income Statement Schedule of Condensed Consolidating Income Statements [Table Text Block] Tabular disclosure of the consolidating statements of earnings. Other domain members (in addition to parent) such as guarantor subsidiaries, non-guarantor subsidiaries, and the consolidation eliminations, will be included in order that the respective monetary amounts for each of the domains will aggregate to the respective amounts on the consolidated financial statements. Condensed Consolidating Statement of Comprehensive Income Schedule of Condensed Consolidating Statement of Comprehensive Income [Table Text Block] Schedule of Condensed Consolidating Statement of Comprehensive Income [Table Text Block] Condensed Consolidating Balance Sheet Schedule of Condensed Consolidating Balance Sheets [Table Text Block] Tabular disclosure of the consolidating balance sheets. Other domain members (in addition to parent) such as guarantor subsidiaries, non-guarantor subsidiaries, and the consolidation eliminations, will be included in order that the respective monetary amounts for each of the domains will aggregate to the respective amounts on the consolidated financial statements. Condensed Consolidating Statement of Cash Flows Schedule of Condensed Consolidating Statements of Cash Flows [Table Text Block] Tabular disclosure of the consolidating statements of cash flows. Other domain members (in addition to parent) such as guarantor subsidiaries, non-guarantor subsidiaries, and the consolidation eliminations, will be included in order that the respective monetary amounts for each of the domains will aggregate to the respective amounts on the consolidated financial statements. ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Marketable securities Available-for-sale Securities, Debt Securities, Current Accounts receivable, net Accounts Receivable, Net, Current Inventories, net Uniforms and other rental items in service Uniforms and Other Rental Items in Service Aggregate carrying value as of the balance sheet date of the Rental Uniforms and Ancillary Products operating segment inventory, valued at cost less amortization, calculated using the straight-line method. Income taxes, current Income Taxes Receivable, Current Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, at cost, net Property, Plant and Equipment, Net Goodwill Service contracts, net Service Contracts Finite Lived Intangible Assets, Net The aggregate sum of gross carrying value of service contracts, less accumulated amortization and any impairment charges. Other assets, net Total assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued compensation and related liabilities Employee-related Liabilities, Current Accrued liabilities Accrued Liabilities, Current Deferred tax (asset) liability Deferred Tax Liabilities, Current Long-term debt due within one year Long-term Debt, Current Maturities Total current liabilities Liabilities, Current Long-term liabilities: Liabilities, Noncurrent [Abstract] Long-term debt due after one year Long-term Debt, Excluding Current Maturities Deferred income taxes Deferred Tax Liabilities, Noncurrent Accrued liabilities Accounts Payable and Accrued Liabilities, Noncurrent Total long-term liabilities Liabilities, Noncurrent Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders' equity Liabilities and Equity Less Than [Member] Less Than [Member] Less Than [Member] Change in fair value of derivative, tax expense (benefit) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect Change in fair value of available-for-sale securities, tax expense (benefit) Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Earnings Per Share, by Stock [Axis] Earnings Per Share, by Stock [Axis] Information about earning per share by different classes of stock of the entity. Earnings Per Share, by Stock [Domain] Earnings Per Share, by Stock [Domain] Specific description about earning per share by different classes of stock of the entity. Common Stock [Member] Common Stock [Member] Nonvested Stock [Member] Nonvested Stock [Member] Represents the information pertaining to unvested shares. Basic Earnings per Share Earnings Per Share, Basic [Abstract] Less dividends to: Distributed Earnings [Abstract] Dividends Dividends Undistributed net (loss) income Undistributed Earnings, Basic Less: net (loss) income allocated to participating unvested securities Undistributed Earnings Allocated to Participating Securities Net (loss) income available to common shareholders Net Income (Loss) Available to Common Stockholders Basic after Adjustment of Undistributed Earnings Allocated to Participating Securities Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period) and earnings allocated (not distributed) to participating securities. Basic weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Basic earnings per common share: Earnings Per Share, Basic, Other Disclosures [Abstract] Basic earnings per share - distributed earnings (in dollars per share) Earnings Per Share, Basic, Distributed Earnings per share, basic - undistributed earnings (in dollars per share) Earnings Per Share, Basic, Undistributed Total common shares (in dollars per share) Diluted Earnings per Share Earnings Per Share, Diluted [Abstract] Less dividends to: Undistributed Earnings, Diluted Undistributed Earnings, Diluted Effect of dilutive securities - employee stock options (in shares) Incremental Common Shares Attributable to Share-based Payment Arrangements Diluted weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings Per Share, Diluted, Other Disclosures [Abstract] Earnings Per Share, Diluted, Other Disclosures [Abstract] Earnings per share, diluted, distributed (in dollars per share) Earnings Per Share, Diluted, Distributed Earnings per share, diluted, undistributed (in dollars per share) Earnings Per Share, Diluted, Undistributed Commitments and Contingencies Disclosure [Abstract] Litigation and Other Contingencies Commitments and Contingencies Disclosure [Text Block] Document and Entity Information [Abstract] -- None. No documentation exists for this element. -- Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Schedule of fair value of financial instruments measured on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Segment Information Segment Reporting Disclosure [Text Block] Information related to operating segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Statement of Financial Position [Abstract] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares outstanding ( in shares) Preferred Stock, Shares Outstanding Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock, shares (in shares) Treasury Stock, Shares Debt, Derivatives and Hedging Activities [Abstract] Debt, Derivatives and Hedging Activities [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Notes Due 2012 [Member] Notes Due 2012 [Member] Notes Due 2012 [Member] Notes Due 2022 [Member] Notes Due 2022 [Member] Notes Due 2022 [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Repayment of Debt [Member] Repayment of Debt [Member] Issuance of Debt [Member] Issuance of Debt [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes [Member] Senior Notes [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Commercial paper program availability Commercial Paper Maximum Borrowing Capacity This element represents the maximum borrowing capacity under a commercial paper program. Revolving credit facility, maximum borrowing capacity with accordion feature Line of Credit Facility, Maximum Borrowing Capacity Repayments of Long-term Debt Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Proceeds from Issuance of Long-term Debt Other Comprehensive Income Increase from Amortization of Interest Rate Cash Flow Hedge Other Comprehensive Income Increase from Amortization of Interest Rate Cash Flow Hedge Represents the increase in comprehensive income related to the amortization of an interest rate cash flow hedge. Debt, Derivatives and Hedging Activities Debt, Derivatives Instruments and Hedging Activities Disclosure [Text Block] Information about whether or not the entity is in compliance with debt covenants and the effects of noncompliance with debt covenants; and the entity's entire derivative instruments and hedging activities disclosure as a single block of text which describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising there from, and the amounts of and methodologies and assumptions used in determining the amounts of such items. Income taxes, current Accounts payable Deferred tax liability Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, no par value: 100,000 shares authorized, none outstanding Preferred Stock, Value, Issued Common stock, no par value: 425,000,000 shares authorized, FY 2013: 174,419,454 issued and 123,228,777 outstanding FY 2012: 173,745,913 issued and 126,519,758 outstanding Common Stock, Value, Issued Paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Treasury stock: FY 2013: 51,190,677 shares FY 2012: 47,226,155 shares Treasury Stock, Value Other accumulated comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Cash surrender value of insurance policies Cash Surrender Value of Life Insurance Equity method investments Equity Method Investments Cost method investments Cost Method Investments Gain (Loss) on Sale of Equity Investments Gain (Loss) on Sale of Equity Investments Amortization expense Estimated amortization expense, year one Future Amortization Expense, Year One Estimated amortization expense, year two Future Amortization Expense, Year Two Estimated amortization expense, year three Future Amortization Expense, Year Three Estimated amortization expense, year four Future Amortization Expense, Year Four Estimated amortization expense, year five Future Amortization Expense, Year Five Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingencies by Nature of Contingency [Axis] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Serrano lawsuit [Member] Serrano Purported Class Action Lawsuit [Member] Represents purported class action lawsuit alleging discrimination against women in hiring into various service sales representative positions. Loss Contingencies [Line Items] Loss Contingencies [Line Items] Loss Contingency, Number of Plaintiffs Loss Contingency, Number of Plaintiffs Loss Contingency, Number of Plaintiffs Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value [Member] Estimate of Fair Value, Fair Value Disclosure [Member] Fair Value by Measurement Frequency [Axis] Fair Value by Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Domain] Investment Type Categorization [Domain] U.S. Municipal Bonds [Member] Municipal Bonds [Member] Canadian treasury securities [Member] Canadian Treasury Securities [Member] This element represents Canadian treasury securities. Fair value on a recurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Marketable securities Available-for-sale Securities, Fair Value Disclosure Total assets at fair value Assets, Fair Value Disclosure