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Restructuring | 12 Months Ended
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Dec. 31, 2020
Restructuring and Related Activities [Abstract] |
Restructuring | Restructuring In 2017, Aon initiated a global restructuring plan (the “Restructuring Plan”) in connection with the Divested Business. The Restructuring Plan was intended to streamline operations across the organization and deliver greater efficiency, insight, and connectivity. The Company incurred all remaining costs for the Restructuring Plan, and the Restructuring Plan was closed in the fourth quarter of 2019. As such, for the year ended December 31, 2020, no charges were taken under the Restructuring Plan. For the years ended December 31, 2019 and 2018, $451 million and $485 million of restructuring expenses were charged under the Restructuring Plan. As of December 31, 2019, the remaining liabilities for the Restructuring Plan were $204 million. During the year ended December 31, 2020, the Company made cash payments of $127 million, and the effect of foreign currency translation and other non-cash activity was $32 million, resulting in restructuring liabilities of $45 million as of December 31, 2020.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -URI http://asc.fasb.org/topic&trid=2175745 + Details
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