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Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Release of stock-based awards Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Value, Exercises in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Value, Exercises in Period Total cash, cash equivalents and restricted cash in the Statements of Cash Flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Reissuance of treasury stock to settle share-based awards Stock Issued During Period, Value, Treasury Stock Reissued Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Accrued other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Other current assets and current assets of discontinued operations Restricted Cash and Cash Equivalent, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] CCIBV Term Loan Facility CCIBV Term Loan Facility [Member] CCIBV Term Loan Facility Net income from discontinued operations attributable to the Company per share of common stock - basic (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Share-based compensation Share-Based Payment Arrangement, Noncash Expense Employee compensation costs Labor and Related Expense Disposal Group Name [Axis] Disposal Group Name [Axis] Schedule of Long-Term Debt Outstanding Schedule of Debt [Table Text Block] Accrued interest Interest and Dividends Payable, Current Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Net income (loss) attributable to the Company per share of common stock — basic (in dollars per share) Net income (loss) attributable to the Company per share of common stock - basic (in dollars per share) Earnings Per Share, Basic Deferred revenue Contract with Customer, Liability, Current Total Current Assets Assets, Current Insider Trading Arrangements [Line Items] Long-term debt Total long-term debt Long-Term Debt, Excluding Current Maturities Income (loss) from discontinued operations before net gain (loss) on sold and held-for-sale businesses and income taxes Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Accumulated deficit Retained Earnings (Accumulated Deficit) Other property, plant and equipment, net Property, Plant, and Equipment, Other, after Accumulated Depreciation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Equity Awards Adjustments Equity Awards Adjustments [Member] Total Liabilities and Stockholders' Deficit Liabilities and Equity Permanent easements Permanent Easements [Member] Permanent Easements [Member] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Finance leases Other debt [Member] Other debt [Member] Segments [Axis] Segments [Axis] Increase (decrease) in other operating liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Airports Airports Segment [Member] Airports Segment Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Tabular List, Table Tabular List [Table Text Block] Other assets Restricted Cash and Cash Equivalent, Noncurrent Additional paid-in capital Additional Paid in Capital LONG-TERM DEBT Long-Term Debt [Text Block] Transaction costs associated with structural initiatives and financial advisory services Transaction Costs Associated With Structural Initiatives And Financial Advisory Services Transaction Costs Associated With Structural Initiatives And Financial Advisory Services Other operating expense (income), net Other operating (expense) income, net Other Operating Income (Expense), Net Name Awards Close in Time to MNPI Disclosures, Individual Name STOCKHOLDERS’ DEFICIT Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Gain (loss) on sold and held-for-sale businesses, net Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax OTHER ASSETS Assets, Noncurrent [Abstract] PROPERTY, PLANT AND EQUIPMENT Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization [Abstract] Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Permits, net Permits Construction Permits [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Reclassification adjustment for realized net losses from cumulative translation adjustments and pension related to sold businesses Disposition of business Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other reconciling items, net Other Noncash Income (Expense) Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Term Loan Facility Due 2028 New term loan facility [Member] New term loan facility [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Transit, street furniture and other outdoor contractual rights Transit Street Furniture And Other Outdoor Contractual Rights [Member] Transit Street Furniture And Other Outdoor Contractual Rights [Member] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and cash equivalents in the Balance Sheets Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Other Circumstances Other Circumstances [Member] Other Circumstances Non-cash operating lease expense, net of interest Noncash, Operating Lease Expense Noncash, Operating Lease Expense America Americas Segment [Member] Americas Segment Depreciation and amortization Depreciation, Depletion and Amortization Guarantee obligations, collateral, cash Guarantee Obligations, Collateral, Cash Guarantee Obligations, Collateral, Cash Entity Address, Address Line Two Entity Address, Address Line Two Consolidated net income (loss) Net income (loss) Consolidated net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Share price (in dollars per share) Business Combination, Price Per Share CURRENT ASSETS Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax benefit (expense) attributable to continuing operations Income tax benefit (expense) attributable to continuing operations Income Tax Expense (Benefit) OTHER INFORMATION Other Income and Other Expense Disclosure [Text Block] Award Timing Method Award Timing Method [Text Block] Principles of Consolidation and Preparation of Interim Financial Statements Consolidation, Policy [Policy Text Block] Net decrease in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Net income (loss) attributable to the Company Net income (loss) attributable to the Company Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Income from discontinued operations Income from discontinued operations, net of income taxes Income from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Statement [Table] Statement [Table] Other Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Restatement Determination Date: Restatement Determination Date [Axis] Net income (loss) from continuing operations attributable to the Company Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Other liabilities Disposal Group, Including Discontinued Operation, Other Liabilities Airports Airports [Member] Airports Long term debt term (in years) Long-Term Debt, Term Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]