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Accelerating Aon United Program | 6 Months Ended
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Jun. 30, 2024
Restructuring and Related Activities [Abstract] |
Accelerating Aon United Program | Accelerating Aon United Program In the third quarter of 2023, Aon initiated a three-year restructuring program called the Accelerating Aon United Program (the “Program”) with the purpose of streamlining the Company’s technology infrastructure, optimizing its leadership structure and resource alignment, and reducing its real estate footprint to align to its hybrid working strategy. The Program includes technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation and technology costs. Program charges are recognized within Accelerating Aon United Program expenses on the accompanying Condensed Consolidated Statements of Income and consists of the following cost activities: •Technology and other – includes costs associated with actions taken to rationalize certain applications and to optimize technology across the Company. These costs may include contract termination fees and other non-capitalizable costs associated with Program initiatives, which include professional service fees. •Workforce optimization – includes costs associated with headcount reduction and other separation-related costs. •Asset impairments – includes non-cash costs associated with impairment of assets, as they are identified, including ROU lease assets, leasehold improvements, and other capitalized assets no longer providing economic benefit. The Program is currently expected to result in cumulative costs of approximately $1.0 billion, consisting of approximately $900 million of cash charges and approximately $100 million of non-cash charges. For the three and six months ended June 30, 2024, total Program costs incurred were $132 million and $251 million, respectively. The Company expects to continue to review the implementation of elements of the Program throughout the course of the Program and, therefore, there may be changes to expected timing, estimates of expected costs, and related savings. The Company’s unpaid liabilities for charges under the Program are generally included in Accounts payable and accrued liabilities in the Condensed Consolidated Statements of Financial Position. The changes in the Company’s liabilities for the Program as of June 30, 2024 are as follows (in millions):
| Technology and other |  | Workforce optimization |  | Asset impairments |  | Total
Liability balance as of January 1, 2024 | $ | 14 |  |  | $ | 86 |  |  | $ | — |  |  | $ | 100 |
Charges | 51 |  |  | 145 |  |  | 55 |  |  | 251 |
Cash payments | (29) |  |  | (69) |  |  | — |  |  | (98) |
Foreign currency translation and other | — |  |  | (3) |  |  | — |  |  | (3) |
Non-cash charges (1) | (27) |  |  | (10) |  |  | (55) |  |  | (92) |
Liability balance as of June 30, 2024 | $ | 9 |  |  | $ | 149 |  |  | $ | — |  |  | $ | 158 |
Total costs incurred from inception to date | $ | 65 |  |  | $ | 248 |  |  | $ | 73 |  |  | $ | 386 |
(1)During the three and six months ended June 30, 2024, the Company recognized $12 million and $20 million, respectively, of accelerated ROU asset amortization or impairments due to the Company’s decision to exit certain leased properties as a result of the AAU Program. The amounts are presented in Technology and other, where the corresponding liability is reflected within Other current liabilities and Non-current operating lease liabilities, which will ultimately be settled in cash.

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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://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/420/tableOfContent Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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