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Total Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Guarantees of Aon plc’s 4.450% Senior Notes due 2043 Guarantees Of Aon Plc's 4.450% Senior Notes Due 2043 [Member] Guarantees Of Aon Plc's 4.450% Senior Notes Due 2043 Fatal Plain Crash In November2016 Fatal Plain Crash In November2016 [Member] Fatal Plain Crash In November2016 Goodwill, measurement period adjustment Goodwill related to prior year acquisitions Goodwill, Measurement Period Adjustment Company Selected Measure Name Company Selected Measure Name Fair Value Measurement [Domain] Fair Value Measurement [Domain] Net income attributable to Aon shareholders Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.000% Senior Notes due 2032 Guarantees Of Aon Corporation and Aon Global Holdings plc’s 5.000% Senior Notes Due 2032 [Member] Guarantees Of Aon Corporation and Aon Global Holdings plc’s 5.000% Senior Notes Due 2032 Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Operating cash flows for operating leases Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Goodwill [Roll Forward] Goodwill [Roll Forward] Restructuring Plan [Domain] Restructuring Plan [Domain] Claims, Lawsuits, and Other Contingencies Commitments and Contingencies Disclosure [Text Block] Weighted average ordinary shares outstanding - diluted (in shares) Diluted weighted average ordinary shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] Long-term debt Business Combination, Recognized Liability Assumed, Long-Term Debt, Current Entity Small Business Entity Small Business Percentage of capital acquired Business Combination, Voting Equity Interest Acquired, Percentage Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Net income (loss) related to redeemable noncontrolling interest Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Accrued potential interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Unremitted earnings Unremitted earnings Deferred Tax Liabilities, Undistributed Foreign Earnings Document Transition Report Document Transition Report Cash and Cash Equivalents and Short-term Investments Cash Cash Equivalents and Short Term Investments [Policy Text Block] Disclosure of accounting policy for cash and cash equivalents and short-term investments. Commercial paper issuances, net of repayments Proceeds from (Repayments of) Commercial Paper Underlying Securities Award Underlying Securities Amount Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Equity Component [Domain] Equity Component [Domain] Redeemable and nonredeemable noncontrolling interests, and other financing activities Proceeds From (Payments For) Noncontrolling Interests And Other Financing Activities Proceeds From (Payments For) Noncontrolling Interests And Other Financing Activities Document Period End Date Document Period End Date Income Taxes Income Tax Disclosure [Text Block] Class A Ordinary Shares $0.01 nominal value Common Class A [Member] Net operating loss, capital loss, interest, and tax credit carryforwards Deferred Tax Assets Net Operating and Capital Loss Carryforwards and Tax Credit Carryforwards The sum of the tax effects as of the balance sheet date of the amount of (1) excess of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset, and capital losses that cannot be utilized on the tax return during a period that have been carried forward to reduce taxable income or taxes payable in a future year and (2) future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance. U.K. United Kingdom UNITED KINGDOM Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Short-term lease cost Short-Term Lease, Cost Total equity Beginning Balance Ending Balance Equity, Including Portion Attributable to Noncontrolling Interest Average price per share (in dollars per share) Shares Acquired, Average Cost Per Share Finance lease costs Finance Lease, Cost1 [Abstract] Finance Lease, Cost1 [Abstract] Document Type Document Type Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Product and Service [Axis] Product and Service [Axis] Variable lease cost Variable Lease, Cost Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Litigation Status [Domain] Litigation Status [Domain] Percentage of the Company's projected benefit obligation Defined Benefit Plan, Percentage of the Total Pension Obligations Represents the percentage of the company's total pension obligations represented within the tables provided. Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Share repurchase authorization amount Share Repurchase Program, Authorized, Amount Vehicles Vehicles [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Disposal Group Name [Axis] Disposal Group Name [Axis] Cash paid for employee taxes on withholding shares Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Derivative term of contract Derivative term of contract Derivative, Term of Contract Restructuring plan, period Restructuring And Related Cost, Period Restructuring And Related Cost, Period Netherlands and Canada Other The Netherlands And Canada [Member] The Netherlands And Canada [Member] Entity Information [Line Items] Entity Information [Line Items] Current liabilities Liabilities, Current [Abstract] Total other comprehensive income (expense) attributable to Aon shareholders Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Schedule of Derivative Gains (Losses) Derivative Instruments, Gain (Loss) [Table Text Block] Total undiscounted future minimum lease payments Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Accounts payable and accrued liabilities Business Combination, Recognized Liability Assumed, Accounts Payable, Current Diluted net income per share attributable to Aon shareholders (in dollars per share) Earnings Per Share, Diluted Receivables, net Accounts Receivable, after Allowance for Credit Loss, Current AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Schedule of Weighted-Average Assumptions Used to Determine Future Benefit Obligations 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Unrealized Holding Gain (Loss), before Adjustment, after Tax Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Schedule of Other Current Liabilities Other Current Liabilities [Table Text Block] Tradenames Trade Names [Member] Eliminations Intersegment Eliminations [Member] Expiration Date Trading Arrangement Expiration Date Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss that have not yet been Recognized as Components of net Periodic Benefit Cost Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block] NFP Acquisition NFP [Member] NFP 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Five Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Other accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other Other Investments Other Investments [Member] Fixed assets, net Fixed assets, net Property, Plant and Equipment, Net Accelerating Aon United Program expenses Charges Restructuring Charges Percentage of targeted amount Share-based Compensation Arrangement by Share-based Payment Award, Percentage Of Targeted Amount Share-based Compensation Arrangement by Share-based Payment Award, Percentage Of Targeted Amount Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Restructuring Cost [Table] Restructuring Cost [Table] Entity Current Reporting Status Entity Current Reporting Status Credit Facility Expiring October 2028 Credit Facility Expiring October 2028 [Member] Credit Facility Expiring October 2028 Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Schedule of Dispositions Schedule Of Disposition Of Business [Table Text Block] Schedule Of Disposition Of Business Provision for income taxes at the Irish statutory tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Excess tax benefits related to shared based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent Capitalized Cost To Fulfill Customer Contracts Capitalized Cost To Fulfill Customer Contracts [Member] Capitalized Cost To Fulfill Customer Contracts [Member] State and local income taxes, net of federal income tax effect U.S. state income taxes, net of U.S. federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent 4.450% Senior Notes due May 2043 4.450% Senior Notes Due May 2043 [Member] 4.450% Senior Notes Due May 2043 Finance Finance Lease, Liability, Current Accumulated benefit obligation at end of year Defined Benefit Plan, Accumulated Benefit 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Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Shares issued - NFP Transaction Stock Issued During Period, Value, Acquisitions Balance at the beginning of the period Balance at the end of the period Unrecognized Tax Benefits Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current 2027 Long-Term Debt, Maturity, Year Two Lease Commitments Lessee, Operating Leases [Text Block] Cash provided by (used for) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] 5.300% Senior Notes due March 2031 5.300% Senior Notes due March 2031 [Member] 5.300% Senior Notes due March 2031 2.900% Senior Notes due August 2051 2.900% Senior Notes Due August 2051 [Member] 2.900% Senior Notes Due August 2051 Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Other Information Related to the Company's Other Post-Retirement Benefit Plans Schedule of Other Postretirement Benefits Other Information [Table Text Block] Disclosure of the net periodic benefit cost recognized, weighted-average discount rate used to determine future benefit obligations and weighted-average discount rate used to determine net periodic benefit costs for the other post-retirement benefits plan. Completed acquisitions Business Combination, Number of Businesses Acquired Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Ordinary Shares and Additional Paid-in Capital Common Stock Including Additional Paid in Capital [Member] Entity Tax Identification Number Entity Tax Identification Number Reinsurance Solutions Reinsurance Solutions [Member] Reinsurance Solutions Schedule of Components of Weighted Average Number of Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Ordinary shares, issued shares (in Shares) Beginning Balance (in shares) Ending Balance (in shares) Common Stock, Shares, Issued Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Operating leases Operating Lease, Weighted Average Remaining Lease Term 2029 Long-Term Debt, Maturity, Year Four Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Entity Public Float Entity Public Float Schedule of Changes in the Net Carrying Amount of Goodwill by Operating Segment Schedule of Goodwill [Table Text Block] Interest expense Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Current income taxes Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Unrecognized loss Net loss Unrecognized (gain) loss Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Foreign Income Tax Paid, Foreign, after Refund Received Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Guarantees of Aon Corporation and Aon Global Holdings plc’s 3.900% Senior Notes due 2052 Guarantees of Aon Corporation and Aon Global Holdings plc’s 3.900% Senior Notes due 2052 [Member] Guarantees of Aon Corporation and Aon Global Holdings plc’s 3.90% Senior Notes due 2052 [Member] Prepaid expenses Prepaid Expense, Current Other current liabilities Total Other Liabilities, Current Total lease liabilities Operating And Finance Lease Liability Operating And Finance Lease Liability Discount rate Weighted-average discount rate used to determine net periodic benefit costs Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Accrued benefit liability - 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Tax credit carryforward, period Tax Credit Carryforward, Period Tax Credit Carryforward, Period Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Transfers Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan Total share-based compensation expense Share-Based Payment Arrangement, Expense Hedging Designation [Domain] Hedging Designation [Domain] Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Technology and other Workforce Optimization [Member] Workforce Optimization Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Current assets Assets, Current [Abstract] Total liabilities, redeemable noncontrolling interests, and equity Liabilities and Equity Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Post-retirement Benefit Obligations Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Shares issued - NFP Transaction (In shares) Stock Issued During Period, Shares, Acquisitions Cash, cash equivalents and funds held on behalf of clients at beginning of year Cash, cash equivalents and funds held on behalf of clients at end of year Total cash and cash equivalents and funds held on behalf of clients Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Other Investments, Pooled Funds Other Investments, Pooled Funds [Member] Other Investments, Pooled Funds Real estate Employee Benefit Plan, Real Estate [Member] Finance leases Lessee, Finance Lease, Discount Rate Other Deferred Tax Assets, Other Share-based compensation expense, net of tax Share-Based Payment Arrangement, Expense, after Tax Long-lived assets, including operating lease ROU assets Segment, Expenditure, Addition to Long-Lived Assets Accounting Policies [Abstract] Accounting Policies [Abstract] Schedule of Lessee Operating Lease Liability Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Purchases of investments Payments to Acquire Other Investments Fair value of RSUs vested during the period Fair value of PSAs vested during the period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Pay vs Performance Disclosure [Line Items] Damages sought option 2 Loss Contingency Damages Sought Value Option Two Loss Contingency Damages Sought Value Option Two Liabilities Liabilities [Abstract] Amortization of leased assets Finance Lease, Right-of-Use Asset, Amortization Other non-current liabilities Other non-current liabilities Other Liabilities, Noncurrent Expected future benefit payments 2025 through 2029 Defined Benefit Plan, Expected Future Benefit Payment, Year One To Year Five Defined Benefit Plan, Expected Future Benefit Payment, Year One To Year Five Completed dispositions Number Of Dispositions Represents the number of entities disposed of by the reporting entity. 2.050% Senior Notes due August 2031 2.050% Senior Notes Due August 2031 [Member] 2.050% Senior Notes Due August 2031 Other general expense Other General Expenses General recurring costs associated with normal operations, excluding compensation and benefits. Current portion of long-term debt Long-Term Debt, Current Maturities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Federal and state benefit of interest from uncertain tax positions Deferred Tax Assets, Federal And State Benefit Of Interest From Uncertain Tax Positions Deferred Tax Assets, Federal And State Benefit Of Interest From Uncertain Tax Positions Comprehensive income attributable to Aon shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Deferred tax liabilities Deferred tax liabilities — non-current Deferred Income Tax Liabilities, Net Expected return on plan assets, net of administration expenses Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets Weighted average remaining lease term (years) Lessee, 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deferred tax assets and liabilities Components of Deferred Tax Assets and Liabilities [Abstract] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Business Combination, Pro Forma Information [Line Items] Business Combination, Pro Forma Information [Line Items] Weighted average useful life Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Assets Assets, Fair Value Disclosure [Abstract] 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Four Capitalized Contract Cost [Table] Capitalized Contract Cost [Table] Other investments Other Investments Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Balance at beginning of period Balance at end of period Capitalized Contract Cost, Net ROU assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Pension, other postretirement and postemployment liabilities Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] State and local income taxes, net of federal income tax effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Deferred revenue recognized Contract With Customer, Liability, Including New Contract Revenue, Recognized Contract With Customer, Liability, Including New Contract Revenue, Recognized Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] 3.875% Senior Notes due December 2025 3.875% Senior Notes due December 2025 [Member] 3.875% Senior Notes due December 2025 [Member] Disposal group, not discontinued operation, gain on disposal Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal 4.875% Senior Secured Notes Due 2028 4.875% Senior Secured Notes Due 2028 [Member] 4.875% Senior Secured Notes Due 2028 Change in fair value of plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Schedule of Income From Continuing Operations Before Income Tax Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Plan Name [Axis] Plan Name [Axis] Fixed Assets Property, Plant and Equipment, Policy [Policy Text Block] PEO PEO [Member] Income Tax Paid, by Individual Jurisdiction [Line Items] Income Tax Paid, by Individual Jurisdiction [Line Items] U.S. U.S. United States UNITED STATES Change in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets 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Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Two Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Two Business Combination [Table] Business Combination [Table] Expected cost, cash charges Restructuring And Related Cost, Expected Cost, Cash Charges Restructuring And Related Cost, Expected Cost, Cash Charges Derivative, Notional Amount Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Income Tax Paid, by Individual Jurisdiction [Table] Income Tax Paid, by Individual Jurisdiction [Table] Schedule of Consideration Transferred and Preliminary Value of Intangible Assets Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Proceeds from long-term lines of credit Proceeds from Long-Term Lines of Credit Guarantees of Aon Corporation and Aon Global Holdings plc’s 5.350% Senior Notes due 2033 Guarantees Of Aon Corporation and Aon Global Holdings plc’s 5.350% Senior Notes Due 2033 [Member] Guarantees Of Aon Corporation and Aon Global Holdings plc’s 5.350% Senior Notes Due 2033 Total Deferred Tax Liabilities, Net Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Disposed of by Sale Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Amortization of net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Net lease cost Lease, Cost Cash Flow Hedging Cash Flow Hedging [Member] Goodwill Balance at the beginning of the period Balance at the end of the period Goodwill Schedule of Lease, Cost Lease, Cost [Table Text Block] Cash and cash equivalents and short-term investments Cash And Cash Equivalents And Short-Term Investments Cash And Cash Equivalents And Short-Term Investments Plans with PBO in excess of plan assets, plan assets Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets Reconciliation of the Company's beginning and ending amount of unrecognized tax benefits Unrecognized Tax Benefits [Roll Forward] Auditor Name Auditor Name 4.750% Senior Notes due May 2045 4.750% Senior Notes Due May 2045 [Member] 4.750% Senior Notes Due May 2045 Schedule of Operating and Capital Loss Carryforwards Summary of Operating Loss Carryforwards [Table Text Block] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Other Performance Measure, Amount Other Performance Measure, Amount Short-term debt and current portion of long-term debt Less: Short-term 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Amounts due from clients and insurance companies, along with short-term investments held by the entity that will be paid to clients and insurance companies, net of a reserve for doubtful accounts. 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Segments [Axis] Segments [Axis] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Costs to obtain contracts with customers Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Thereafter Long-Term Debt, Maturity, after Year Five Share-Based Compensation Plans Share-Based Payment Arrangement [Text Block] Shares repurchased (in shares) Shares repurchased (in shares) Stock Repurchased and Retired During Period, Shares Fiduciary liabilities Fiduciary Liabilities Carrying value as of the balance sheet date of Insurance premiums payable and claims payable. Insurance premiums payable represent premiums collected from insured's and, after deducting the reporting entity's commissions, are due to the respective insurers. Claims payable represent claim payments received from the respective insurers and due to the insured. These unremitted insurance premiums and claims are held in a fiduciary capacity. Intangible assets Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Cash and cash equivalents Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Non-cash related activities Non-cash Lease Activities [Abstract] Non-cash Lease Activities [Abstract] Expected cost Restructuring and Related Cost, Expected Cost Assets Assets [Abstract] Unrealized gain (loss) related to assets and liabilities measured at fair value using unobservable inputs OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent 8.500% Senior Secured Notes Due 2031 8.500% Senior Secured Notes Due 2031 [Member] 8.500% Senior Secured Notes Due 2031 Debt Instrument [Axis] Debt Instrument [Axis] Less: Fair value of nonredeemable noncontrolling interests Business Combination, Recognized Liability Assumed, Non-Redeemable Non-Controlling Interests Business Combination, Recognized Liability Assumed, Non-Redeemable Non-Controlling Interests Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Fair Value Measurements and Financial Instruments Fair Value Disclosures [Text Block] Employee Benefits Retirement Benefits [Text Block] Business Combination [Line Items] Business Combination [Line Items] Extinguishment of debt Gain (Loss) on Extinguishment of Debt Credit Facility [Domain] Credit Facility [Domain] U. S. Program U. S. Commercial Paper Program [Member] U. S. 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recognized (millions) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) VIE assets, percentage Variable Interest Entity, Assets, Percentage Variable Interest Entity, Assets, Percentage Transaction Two [Member] Transaction Two Foreign currency impact Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) PSA, actual shares issued, percent Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued, Percent Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued, Percent Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Interest cost Defined Benefit Plan, Interest Cost Amounts recognized in Accumulated other comprehensive loss unrecognized as components of net periodic benefit cost Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract] Guarantees of Aon North America, Inc.’s 5.300% Senior Notes due 2031 Guarantees of Aon North America, Inc.’s 5.300% Senior Notes due 2031 [Member] Guarantees of Aon North America, Inc.’s 5.300% Senior Notes due 2031 5.750% Senior Notes due March 2054 5.750% Senior Notes due March 2054 [Member] 5.750% Senior Notes due March 2054 Other Noncurrent Liabilities Other Noncurrent Liabilities [Member] Schedule of Other Intangible Assets by Asset Class Schedule of Finite-Lived Intangible Assets [Table Text Block] Restatement Determination Date: Restatement Determination Date [Axis] 2025 Acquisitions 2025 Acquisitions [Member] 2025 Acquisitions Shares issued — employee stock compensation plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Schedule of Program Costs Incurred Restructuring and Related Costs [Table Text Block] Income tax expense: Income Tax Expense (Benefit), Continuing Operations [Abstract] Pension and other postretirement Pension Cost (Reversal Of Cost) And Other Postretirement Benefits Cost (Reversal Of Cost) Pension Cost (Reversal Of Cost) And Other Postretirement Benefits Cost (Reversal Of Cost) Liabilities assumed: Business Combination, Recognized Liability Assumed, Liability [Abstract] Amounts reclassified from accumulated other comprehensive income (loss), net Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Name Trading Arrangement, Individual Name Schedule of Fair Values of Pension Plan Assets Schedule of Changes in Fair Value of Plan Assets [Table Text Block] Net purchases of shares from nonredeemable noncontrolling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Debt face value Debt Instrument, Face Amount Leases Operating Lease And Finance Lease Liability, Current 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Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Redeemable Noncontrolling Interests Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Earnings per Share Earnings Per Share, Policy [Policy Text Block] Senior Notes Senior Notes [Member] 2030 Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Five Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Five Change in Capitalized Contract Costs Change In Capitalized Contract Costs [Roll Forward] Change In Capitalized Contract Costs [Roll Forward] Alternative investments Alternative Investments [Member] Represents investments in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds, and any other investment. Total liabilities assumed Business Combination, Recognized Liability Assumed, Liability All Executive Categories All Executive Categories [Member] Schedule of Components of Aon's Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Taxes receivable Income Taxes Receivable, Noncurrent Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2025 - 214.5; 2024 - 216.0) Common Stock, Value, Issued Finance lease assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization Short-term investments Short-Term Investments Total assets acquired Business Combination, Recognized Asset Acquired, Assets Acquired Including Goodwill Business Combination, Recognized Asset Acquired, Assets Acquired Including Goodwill 6.250% Senior Notes due September 2040 6.250% Senior Notes Due September 2040 [Member] This element represents the senior notes that bear an interest rate of 6.25 percent and will mature in 2040. Equity interest issued or issuable, value Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value Human Capital Human Capital Segment [Member] Human Capital Segment Contract-Based Intangible Assets Contract-Based Intangible Assets [Member] Business Combination [Axis] Business Combination [Axis] Incentive Effective Income Tax Rate Reconciliation, Incentive, Percent Effective Income Tax Rate Reconciliation, Incentive, Percent Schedule of Restricted Share Unit Activity Schedule of Nonvested Share Activity [Table Text Block] Non-redeemable Non-controlling Interests Noncontrolling Interest [Member] Intangibles and property, plant and equipment Deferred Tax Liabilities Intangible Assets and Property Plant and Equipment Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill and from property, plant, and equipment. Net deferred tax asset Deferred Tax Assets, Net Schedule of Components of Fixed Assets, Net Schedule of Property, Plant and Equipment Components [Table Text Block] Tabular disclosure of the components of property, plant and equipment. PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Actual allocation percentage Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Deferred tax liabilities Business Combination, Recognized Liability Assumed, Deferred Tax Liability 4.00% Senior Notes due November 2023 4.00% Senior Notes Due November 2023 [Member] 4.00% Senior Notes Due November 2023 [Member] Schedule of Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Goodwill Disposal Group, Including Discontinued Operation, Goodwill Postretirement benefit obligation Net postretirement benefit obligation Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Derivative, Name [Domain] Derivative Contract [Domain] Domestic Plan Domestic Plan [Member] Proceeds from issuance of shares Proceeds from Issuance of Common Stock 2030 Defined Benefit Plan, Expected Future Benefit Payment, Year Five All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Commercial Risk Solutions Commercial Risk Solutions [Member] Commercial Risk Solutions Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Receivables, net Increase (Decrease) in Receivables Annuities Annuities [Member] Represents fixed income investments in annuities. Capital expenditures Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] 5.350% Senior Notes due February 2033 5.350% Senior Notes due February 2023 [Member] 5.350% Senior Notes due February 2023 Disposal Group Classification [Axis] Disposal Group Classification [Axis] Reconciliation of cash and cash equivalents and funds held on behalf of clients: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] 2.875% Senior Notes due May 2026 (EUR 500M) 2.875% Senior Notes Due May 2026 2.875% Senior Notes Due May 2026 [Member] 2.875% Senior Notes Due May 2026 6.875% Senior Notes Due 2028 6.875% Senior Notes Due 2028 [Member] 6.875% Senior Notes Due 2028 Foreign currency translation and other Goodwill, Foreign Currency Translation, Gain (Loss) Net sales (purchases) of short-term investments - non fiduciary Payments for (Proceeds from) Marketable Securities The cash inflow or outflow from sales or purchases of marketable securities. Equity securities Defined Benefit Plan, Equity Securities [Member] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Geographical [Axis] Geographical [Axis] Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Revenue Business Combination, Pro Forma Information, Pro Forma Revenue Foreign currency remeasurement Gain (Loss), Foreign Currency Transaction, before Tax Investment basis differences Deferred Tax Assets (Liabilities), Investments Deferred Tax Assets (Liabilities), Investments Asia Pacific Asia Pacific [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Griffiths & Armour Griffiths & Armour [Member] Griffiths & Armour Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Loss contingency, number of plaintiffs Loss Contingency, Number of Plaintiffs Amortization Capitalized Contract Cost, Amortization Long-Term Debt, Fiscal Year Maturity [Abstract] Long-Term Debt, Fiscal Year Maturity [Abstract] Technology and other intangibles Technology and other Marketing Technology and Other [Member] Represents finite-lived intangible assets related to marketing and technology. Restructuring Plan [Axis] Restructuring Plan [Axis] Net purchases of shares from nonredeemable noncontrolling interests Noncontrolling Interest, Decrease (Increase) From Redemptions Or Purchase of Interests Noncontrolling Interest, Decrease (Increase) From Redemptions Or Purchase of Interests Present value of lease liabilities Financing And Operating Lease Liability, Net Of Sublease Income Financing And Operating Lease Liability, Net Of Sublease Income Decrease of other current assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Current Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Current Assets Funds held on behalf of clients Funds Held for Clients Federal foreign tax credit carryforwards Tax Credit Carryforward, Amount Goodwill related to current year disposals Goodwill, Written off Related to Sale of Business Unit Short-term Debt, Type [Axis] Short-Term Debt, Type [Axis] Unrealized foreign exchange gains Deferred Tax Liabilities, Unrealized Currency Transaction Gains Net periodic benefit (income) cost Defined Benefit Plan, Net Periodic Benefit Cost Before Recognized Net Gain (Loss) Due To Settlements And Curtailments Defined Benefit Plan, Net Periodic Benefit Cost Before Recognized Net Gain (Loss) Due To Settlements And Curtailments Award Timing Disclosures [Line Items] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Service cost Defined Benefit Plan, Service Cost Foreign currency translation and other Restructuring Reserve, Foreign Currency Translation Gain (Loss) Incentive Effective Income Tax Rate Reconciliation, Incentive, Amount Effective Income Tax Rate Reconciliation, Incentive, Amount Other comprehensive income (loss) before reclassifications, net Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 2028 Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Three Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Three Net income attributable to Aon shareholders Net Income (Loss) Attributable to Parent Fixed Income Derivatives Fixed Income Derivatives [Member] Fixed Income Derivatives Pending Litigation Pending Litigation [Member] Construction in progress Construction in Progress [Member] Other Other Accrued Liabilities, Current Schedule of Reconciliation of the Income Tax Provisions Based on its Domicile and Statutory Rate and Irish Statutory Corporate Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Other Other — net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Adoption Date Trading Arrangement Adoption Date Operating income Operating income Operating Income (Loss) Line of Credit Line of Credit [Member] Share-based Compensation Expense Compensation Related Costs, Policy [Policy Text Block] Accumulated deficit Retained Earnings (Accumulated Deficit) Increase in fiduciary liabilities, net of fiduciary receivables Increase In Fiduciary Liabilities, Net Of Fiduciary Receivables Increase In Fiduciary Liabilities, Net Of Fiduciary Receivables Schedule of Share-based Compensation Expense Recognized in Continuing Operations Share-Based Payment Arrangement, Cost by Plan [Table Text Block] 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] Income taxes [Line Items] Income Tax Authority [Line Items] Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.850% Senior Notes due 2027 Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.850% Senior Notes due 2027 [Member] Guarantees of Aon Corporation and Aon Global Holdings plc’s 2.85% Senior Notes due 2027 [Member] Class of Stock [Axis] Class of Stock [Axis] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Other Deferred Tax Liabilities, Other Retirement Plan Type [Axis] Retirement Plan Type [Axis] Statement [Table] Statement [Table] Other income (expense) Total Other Nonoperating Income (Expense) Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Schedule of Business Combination Business Combination [Table Text Block] Total deferred tax expense (benefit) Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to cash provided by operating activities:            Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Lapse of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Nondeductible expenses Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent 5.125% Senior Notes due March 2027 5.125% Senior Notes due March 2027 [Member] 5.125% Senior Notes due March 2027 Other foreign jurisdictions All other foreign Foreign Tax Jurisdiction, Other [Member] Net assets acquired Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill Market related value at end of year Defined Benefit Plan Market Related, Value Represents the market value of plan assets. Finance Finance Lease, Liability, Noncurrent Leases Lessor, Leases [Policy Text Block] Weighted average discount rate Lessee, Weighted Average Discount Rate [Abstract] Lessee, Weighted Average Discount Rate [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Money market funds Basis Money Market Funds and Highly Liquid Securities, Fair Value Disclosure Represents the fair value of money market funds and other highly liquid securities. All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Other Financial Data [Abstract] Other Financial Data [Abstract] Other Financial Data [Abstract] Other Post-Retirement Benefits Other Postretirement Benefits Plan [Member] Termination Date Trading Arrangement Termination Date Guarantees of Aon North America, Inc.’s 5.150% Senior Notes due 2029 Guarantees of Aon North America, Inc.’s 5.150% Senior Notes due 2029 [Member] Guarantees of Aon North America, Inc.’s 5.150% Senior Notes due 2029 Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Liability recorded for interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Revenue Business Combination, Acquiree's Revenue since Acquisition Date, Actual Weighted average ordinary shares outstanding - basic (in shares) Basic weighted average ordinary shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Workforce optimization Technology And Other [Member] Technology And Other Capitalized Contract Cost [Line Items] Capitalized Contract Cost [Line Items] Segment Reporting [Abstract] Segment Reporting [Abstract] Estimated Future Amortization Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Impairment Capitalized Contract Cost, Impairment Loss Deferred tax adjustments, including statutory rate changes Effective Income Tax Rate Reconciliation, Deferred Tax Adjustments Including Statutory Rate Changes, Percent Effective Income Tax Rate Reconciliation, Deferred Tax Adjustments Including Statutory Rate Changes, Percent Debt Disclosure [Abstract] Debt Disclosure [Abstract] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Expenses Costs and Expenses [Abstract] Tax benefit (expense) Reclassification from AOCI, Current Period, Tax Capital and other losses Effective Income Tax Rate Reconciliation, Capital And Other Losses, Percent Effective Income Tax Rate Reconciliation, Capital And Other Losses, Percent Guarantees of Aon plc’s 4.250% Senior Notes due 2042 Guarantees Of Aon Plc's 4.250% Senior Notes Due 2042 [Member] Guarantees Of Aon Plc's 4.250% Senior Notes Due 2042 Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Ordinary shares, nominal value (in dollars per share) Common Stock, Par or Stated Value Per Share Employee benefit plans Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits Accrued interest Deferred Tax Assets, Accrued Interest Deferred Tax Assets, Accrued Interest Schedule of Deferred Income Taxes (Assets and Liabilities Netted by Jurisdiction) as Classified in the Consolidated Statements of Financial Position Schedule of Deferred Tax Assets and Liabilities Netted by Jurisdiction [Table Text Block] Disclosure of deferred income taxes (assets and liabilities netted by jurisdiction) as classified in the consolidated statements of financial position. Taxes receivable Income Taxes Receivable, Current 2031 - 2035 Expected future benefit payments 20230-2034 Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Guarantees of Aon plc’s 4.600% Senior Notes due 2044 Guarantees Of Aon Plc's 4.600% Senior Notes Due 2044 [Member] Guarantees Of Aon Plc's 4.600% Senior Notes Due 2044 Effect of cross-border tax laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount Lease right-of-use asset Deferred Tax Liabilities, Lease Right-Of-Use Asset Deferred Tax Liabilities, Lease Right-Of-Use Asset Use of Estimates Use of Estimates, Policy [Policy Text Block] Accrued benefit liability - current Liability, Defined Benefit Plan, Current Premises Occupancy, Net Schedule of Other Non-current Assets Schedule of Other Assets, Noncurrent [Table Text Block] Government and agency bonds Government and Agency Bonds [Member] Represents fixed income investments in government and agency bonds. 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Other Property, Plant and Equipment, Other Types [Member] Schedule of Expense Recognized for Defined Contribution Savings Plans, Included in Compensation and Benefits and Discontinued Operations in the Consolidated Statements of Income Schedule of Costs of Retirement Plans [Table Text Block] Debt redemption, outstanding aggregate principal amount Debt Instrument, Repurchased Face Amount Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] 2024 Acquisition 2024 Acquisitions [Member] 2024 Acquisitions Expected employer contributions during next fiscal year Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year PSA, vesting conditions period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Vesting Conditions Period Share-based Compensation Arrangement by Share-based Payment Award, Vesting Conditions Period Consolidation Items [Axis] Consolidation Items [Axis] Business combinations Unrecognized Tax Benefits, Increase Resulting from Acquisition Compensation and benefits Compensation And Benefits [Member] Compensation and Benefits [Member] Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Net income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net amount recognized Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Changes in Non-current operating lease liabilities Increase (Decrease) In Operating Lease Liabilities, Noncurrent Increase (Decrease) In Operating Lease Liabilities, Noncurrent 5.350% Senior Notes Due February 2033 5.350% Senior Notes Due February 2033 [Member] 5.350% Senior Notes Due February 2033