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Basis of Presentation | 6 Months Ended
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Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Basis of Presentation | Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements and Notes thereto (the “Financial Statements”) have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). The Financial Statements include the accounts of Aon plc, an Irish public limited company, and all of its controlled subsidiaries. Intercompany accounts and transactions have been eliminated. The 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 Financial Statements prepared in accordance with U.S. GAAP have been condensed or omitted. The 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, 2020. The results for the three and six months ended June 30, 2021 are not necessarily indicative of operating results that may be expected for the full year ending December 31, 2021, particularly in light of the continuing effect of the COVID-19 pandemic. Reclassification Certain amounts in the prior year's Condensed Consolidated Financial Statements have been reclassified to conform to the current year’s presentation. For the three and six months ended June 30, 2020, there was $1 million and $0 million of income, respectively, including the related tax effect, from discontinued operations recognized in Net income (loss) from discontinued operations in the Condensed Consolidated Statement of Income and Condensed Consolidated Statement of Cash Flows. This amount is now included in Other income (expense) in the Condensed Consolidated Statement of Income and Other assets and liabilities in the Condensed Consolidated Statement of Cash Flows. There was no earnings per share impact. In the Company’s June 30, 2020 Quarterly Report on Form 10-Q, the Company reported an effective tax rate on Net income from continuing operations of 17.2% and 18.6% for the three and six months ended June 30, 2020. The effective tax rate on Net income was 17.1% and 18.6% for the three and six months ended June 30, 2020 as a result of the reclassification noted above. Additionally, for the six months ended June 30, 2020, a $82 million cash outflow was classified as an adjustment to Net income from Restructuring reserves in the Condensed Consolidated Statement of Cash Flows. This amount is now included in Other assets and liabilities in the Condensed Consolidated Statement of Cash Flows. There was no impact on Cash provided by operating activities. Use of Estimates The preparation of the 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 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, foreign currency exchange rate movements, and impacts from the COVID-19 pandemic 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 Financial Statements in future periods.

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- Definition The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -URI http://asc.fasb.org/topic&trid=2122149 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -URI http://asc.fasb.org/topic&trid=2197479 + Details
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