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Career Apparel [Member] Food and Support Services United States and Uniform and Career Apparel Weighted average discount rate Lease, Weighted Average Discount Rate [Abstract] Lease, Weighted Average Discount Rate [Abstract] Variable lease cost Variable Lease, Cost Common stock, shares authorized (in shares) Common Stock, Shares Authorized Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other comprehensive loss Other Comprehensive Income (Loss), before Tax Entity Central Index Key Entity Central Index Key Entity Emerging Growth Company Entity Emerging Growth Company Selling and general corporate expenses Selling, General and Administrative Expense Education Education [Member] Education [Member] Senior Notes Senior Notes [Member] Unusual or Infrequent Item, or Both [Domain] Unusual or Infrequent Item, or Both [Domain] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Share-based compensation expense Share-based Payment Arrangement, Noncash Expense Current operating lease liabilities (see Note 8) Operating Operating Lease, Liability, Current Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] 2018 and 2019 Performance Stock Unit Grants 2018 and 2019 Performance Stock Unit Grants [Member] 2018 and 2019 Performance Stock Unit Grants Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Net tax loss expected to be reclassified from accumulated other comprehensive loss Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Derivative [Table] Derivative [Table] Credit Facility [Domain] Credit Facility [Domain] Remainder of 2020 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Base Rate Base Rate [Member] Healthcare Technologies (HCT) Healthcare Technologies [Member] Healthcare Technologies [Member] Healthcare Technologies [Member] Term Loan Facilities Term Loan Facilities [Member] Term Loan Facilities [Member] Income Tax Disclosure Income Tax Disclosure [Text Block] Lease term Lessee, Operating Lease, Term of Contract Other Covenant requirements Debt Instrument, Redemption, Period Three [Member] Finance Lease, Liability, Maturity Finance Lease, Liability, Maturity [Table Text Block] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax 2020 Operating Leases, Future Minimum Payments Due, Next Twelve Months Disposal Group Name [Domain] Disposal Group Name [Domain] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Total FSS International International [Member] International [Member] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] TBOs Time-Based Options [Member] Time-Based Options [Member] Other Assets Other Assets, Noncurrent Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Other comprehensive loss, net of tax Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Type of Adoption [Domain] Type of Adoption [Domain] Derivative Contract [Domain] Derivative Contract [Domain] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Tax Effect Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax [Abstract] Share of equity investee's comprehensive loss Other Comprehensive Income (Loss), Share of Equity Method Investee Other Comprehensive Income, Before Tax Other Comprehensive Income (Loss), Share of Equity Method Investee Other Comprehensive Income, Before Tax Affiliated Funds Group Affiliated Funds Group [Member] Affiliated Funds Group Long-term debt Carrying value of debt Long-term Debt Proceeds from long-term borrowings Proceeds from Issuance of Long-term Debt Reporting Unit [Domain] Reporting Unit [Domain] Equity securities without readily determinable fair value, amount Equity Securities without Readily Determinable Fair Value, Amount 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Partial redemption, covenant minimum of aggregate principal remain outstanding Debt Instrument, Redemption Price, Partial Redemption, Covenant Minimum of Aggregate Principal Remain Outstanding Debt Instrument, Redemption Price, Partial Redemption, Covenant Minimum of Aggregate Principal Remain Outstanding Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] Schedule of Derivative Instruments, Balance Sheet Presentation Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Partial redemption, maximum aggregate principal redeemable Debt Instrument, Partial Redemption, Aggregate Principal Amount, Percent Debt Instrument, Partial Redemption, Aggregate Principal Amount, Percent Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Debt and capital lease obligations Long-term Debt and Lease Obligation, Including Current Maturities Total Stockholders' Equity Parent [Member] Revenue Recognition Revenue from Contract with Customer [Text Block] Uniform Uniform and Career Apparel [Member] Uniform and Career Apparel [Member] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption Finance leases Finance Lease, Weighted Average Remaining Lease Term Pension plan adjustments Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent Title of Individual [Domain] Title of Individual [Domain] Disposal Group Name [Axis] Disposal Group Name [Axis] Gain on sale Gain (Loss) On Disposition, After Tax Gain (Loss) On Disposition, After Tax Interest and Other Financing Costs, Net Interest and Other Financing Costs, Net [Member] Interest and Other Financing Costs, Net Total FSS United States UNITED STATES Proceeds from insurance claim including in Net cash (used in) provided by operating activities Proceeds from Insurance Settlement, Operating Activities Fair Value Measurement [Domain] Fair Value Measurement [Domain] Acquisition of certain businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Interest rate stated percentage Debt Instrument, Interest Rate, Stated Percentage Payments of financing costs Payments of Financing Costs Deferred Stock Units Deferred Stock Units [Member] Deferred Stock Units [Member] CARES Act CARES Act [Member] CARES Act Entity Address, Address Line One Entity Address, Address Line One Geographical [Domain] Geographical [Domain] Other Noncurrent Liabilities Other Noncurrent Liabilities [Member] Entity Address, State or Province Entity Address, State or Province Income Statement Location [Axis] Income Statement Location [Axis] Operating Segments Operating Segments [Member] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Other operating activities Other Operating Activities, Cash Flow Statement Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Disposals of property and equipment Proceeds from Sale of Property, Plant, and Equipment 2022 Finance Lease, Liability, Payments, Due Year Three Income Tax Authority [Axis] Income Tax Authority [Axis] Write off of deferred debt issuance cost Write off of Deferred Debt Issuance Cost Accounts payable Accounts Payable, Current Finance Finance Lease, Right-of-Use Asset Acquisitions Goodwill, Period Increase (Decrease) Accrued expenses and other current liabilities Accrued Liabilities, Current Entity Interactive Data Current Entity Interactive Data Current Employee severance and other costs Employee Severance and Other Costs [Member] Employee Severance and Other Costs [Member] Common stock, shares issued (in shares) Common Stock, Shares, Issued Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Costs and Expenses Costs and Expenses Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Non-cash gain fro the write-off of unamortized deferred financing costs Gain (Loss) on Extinguishment of Debt, before Write off of Debt Issuance Cost Schedule Summarizes the Location of (Gain) Loss Reclassified from AOCI Into Earnings for Derivatives Designated as Hedging Instruments and the Location of (Gain) Loss Schedule of Derivative Designated and Not Designated as Hedging Instruments, Accumulated Other Comprehensive Income and Consolidated Statements of Income, Location [Table Text Block] Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges and (c) gains and losses recognized in the income statement on derivative instruments not designated and qualifying as hedging instruments in cash flow hedges. Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Goodwill impairment and asset write-downs Asset Impairment Charges Fair value of debt Debt Instrument, Fair Value Disclosure Depreciation and amortization Cost, Depreciation and Amortization Long-Term Borrowings Long-term Debt and Lease Obligation Residual Value Guarantee Residual Value Guarantee The maximum potential liability to the Company if the terminal fair value coming off the lease was zero. Inventories Inventory, Net Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Percentage of term loan principal repaid quarterly Percentage of Term Loan Principal Repaid Quarterly Represents percentage of funded term loan principal that is to repaid quarterly. Measurement Frequency [Axis] Measurement Frequency [Axis] Basis spread on variable base rate Debt Instrument, Basis Spread on Variable Base Rate Debt Instrument, Basis Spread on Variable Base Rate Earnings (Loss) Per Share Earnings Per Share [Text Block] Income Tax Contingency [Table] Income Tax Contingency [Table] Amortization of right-of-use-assets Finance Lease, Right-of-Use Asset, Amortization Award Type [Domain] Award Type [Domain] 2024 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Finance Lease, Liability, Payments, Due after Year Five Prior to May 1, 2022 Debt Instrument, Redemption, Period Two [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Finance leases Present value of lease liabilities Finance Lease, Liability Revolving Credit Facility Revolving Credit Facility [Member] Leasehold Improvements Leasehold Improvements [Member] Foreign currency translation adjustments Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Derivative instruments Derivative Instruments, Gain (Loss) [Line Items] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Hedging Designation [Axis] Hedging Designation [Axis] Ownership [Domain] Ownership [Domain] Less: Interest Finance And Operating Lease, Liability, Undiscounted Excess Amount Finance And Operating Lease, Liability, Undiscounted Excess Amount Payments of dividends Payments of dividends Payments of Ordinary Dividends, Common Stock RSUs Restricted Stock Units (RSUs) [Member] Number of remaining performance obligations Revenue, Remaining Performance Obligation, Number Revenue, Remaining Performance Obligation, Number Receivables Facility, Due June 2022 Receivables Facility, Due June 2022 [Member] Receivables Facility, Due June 2022 Schedule of Long-term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Basis of Presentation and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Schedule of Finite-Lived and Infinite-Lived Intangible Assets [Table] Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] [Table] Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Payments made to clients on contracts Increase (Decrease) in Contract with Customer, Asset Reporting unit, percentage of fair value in excess of carrying amount Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount Other Other Long-term Debt Common stock, par value $0.01 (authorized: 600,000,000 shares; issued: 2020—290,558,042 shares and 2019—282,919,536 shares; and outstanding: 2020—252,937,875 shares and 2019—247,756,091 shares) Common Stock, Value, Issued Share of equity investee's comprehensive loss Share of equity investee's comprehensive loss Other Comprehensive Income (Loss), Share of Equity Method Investee Other Comprehensive Income, Net of Tax Other Comprehensive Income (Loss), Share of Equity Method Investee Other Comprehensive Income, Net of Tax Term Loan Facility, US Term Loan B, Due 2027 Term Loan Facility, US Term Loan B, Due 2027 [Member] Term Loan Facility, US Term Loan B, Due 2027 [Member] Other Assets Other Assets [Policy Text Block] Accounting policy for the Company’s other assets, specifically investments in 50% or less owned entities and client contract investments Proceeds from divestiture Proceeds from Divestiture of Businesses Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Inventories Increase (Decrease) in Inventories Net change in funding under the Receivables Facility Proceeds from (Repayments of) Accounts Receivable Securitization Gain on Sale of Healthcare Technologies Gain on Sale of Healthcare Technologies [Member] Gain on Sale of Healthcare Technologies [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Schedule of Sales by Segment Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Effect of dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Borrowings Debt and Capital Leases Disclosures [Text Block] Schedule of Goodwill Assets by Segment Schedule of Goodwill [Table Text Block] Basic (in shares) Basic weighted-average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Operating Lease Right-of-use Assets (see Note 8) Operating1 Operating Lease, Right-of-Use Asset Present value of lease liabilities Finance And Operating Lease, Liability Finance And Operating Lease, Liability Equity Components [Axis] Equity Components [Axis] Proceeds from recovery of investment Gain (Loss) on Investments Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption Accounting Standards Update 2017-07 Accounting Standards Update 2017-07 [Member] Amortization of intangible assets Amortization of Intangible Assets Concentration Risk Type [Domain] Concentration Risk Type [Domain] 5.00% Senior Notes, Due April 2025 5 point 000 Percent Senior Notes, Due April 2025 [Member] 5 point 000 Percent Senior Notes, Due April 2025 [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Fair Value of Financial Assets and Financial Liabilities Fair Value Disclosures [Text Block] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Lease, Cost Lease, Cost [Table Text Block] Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Axis] Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Axis] Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Axis] Operating leases Non Cash Activities Related to Operating Activities Non Cash Activities Related to Operating Activities Depreciation and amortization Depreciation, Depletion and Amortization Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Forecast Forecast [Member] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Gross Amount Other Intangible Assets, Gross Other Intangible Assets, Gross. Variable Rate [Axis] Variable Rate [Axis] Repurchase of common stock, value Treasury Stock, Value, Acquired, Cost Method Security Exchange Name Security Exchange Name Antidilutive securities excluded from computation of EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Disposal Group Classification [Domain] Disposal Group Classification [Domain] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Comprehensive (loss) income Other comprehensive loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Capital surplus Additional Paid in Capital, Common Stock Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Equity Component [Domain] Equity Component [Domain] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Hedging Relationship [Domain] Hedging Relationship [Domain] Document Transition Report Document Transition Report Fed Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Cash Flow Hedging Cash Flow Hedging [Member] Income Taxes Receivable Income Taxes Receivable Financing cash flows from finance leases Finance Lease, Principal Payments Goodwill impairment and asset write-downs Impairments Goodwill, Impairment Loss 2022 Operating Leases, Future Minimum Payments, Due in Three Years Hedging Relationship [Axis] Hedging Relationship [Axis] FSS International Food and Support Services - International [Member] Food and Support Services - International [Member] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Minimum interest rate Debt Instrument, Minimum Interest Rate The interest rate floor of a debt instrument. Income Statement [Abstract] Income Statement [Abstract] Employee Stock Ownership Plan (ESOP) Name [Axis] Employee Stock Ownership Plan (ESOP) Name [Axis] Fair value of derivative assets Derivative Asset, Fair Value, Gross Asset Balance Sheet Location [Axis] Balance Sheet Location [Axis] Performance-Based Options and Performance Stock Units Performance-Based Options and Performance Stock Units [Member] Performance-Based Options and Performance Stock Units [Member]