Basis of Presentation

6 Months Ended

Jun. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying Condensed Consolidated Financial Statements and Notes thereto have been prepared in accordance with U.S. GAAP. The Condensed Consolidated Financial Statements include the accounts of Aon plc and all of its controlled subsidiaries (“Aon” or the “Company”). Intercompany accounts and transactions have been eliminated. The Condensed Consolidated Financial Statements include, in the opinion of management, all adjustments (consisting of normal recurring adjustments and reclassifications) necessary to present fairly the Company’s consolidated financial position, results of operations and cash flows for all periods presented.

Certain information and disclosures normally included in the Condensed Consolidated Financial Statements prepared in accordance with U.S. GAAP have been condensed or omitted. The Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. The results for the three and six months ended June 30, 2022 are not necessarily indicative of operating results that may be expected for the full year ending December 31, 2022.

Use of Estimates

The preparation of the accompanying Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of reserves and expenses. These estimates and assumptions are based on management’s best estimates and judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management believes its estimates to be reasonable given the current facts available. Aon adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets, and foreign currency exchange rate movements increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment would, if applicable, be reflected in the Condensed Consolidated Financial Statements in future periods.

Revision of Previously Issued Financial Statements

During the fourth quarter of 2021, the Company identified and corrected an immaterial presentation error related to Funds held on behalf of clients in the Consolidated Statements of Cash Flows. The Company made appropriate revisions to its Condensed Consolidated Statements of Cash Flows for historical periods. Further information is contained in Note 1 “Basis of Presentation” of the Notes to Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

Reclassification

Certain amounts in prior periods' Condensed Consolidated Financial Statements have been reclassified to conform to the current year presentation. In prior periods, commercial paper issuances and repayments were included in Issuance of debt and Repayment of debt, respectively, in the Condensed Consolidated Statements of Cash Flows. The net amount of commercial paper activity is now disclosed separately in Commercial paper issuances, net of repayments in the Condensed Consolidated Statements of Cash Flows. For the period ended June 30, 2021, commercial paper issuances reclassified from Issuance of debt was $1,100 million and commercial paper repayments reclassified from Repayment of debt was $1,100 million. Further information on the gross commercial paper activity for the current and prior year periods is included within the Liquidity and Financial Conditions section of Part I Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.