Accelerating Aon United Program

12 Months Ended

Dec. 31, 2023

Restructuring and Related Activities [Abstract]

In the third quarter of 2023, Aon initiated a three-year restructuring program with the purpose of streamlining the Company’s technology infrastructure, optimizing its leadership structure and resource alignment, and reducing the real estate footprint to align to its hybrid working strategy. The Program will include technology-related costs to facilitate streamlining and simplifying operations, headcount reduction costs, and costs associated with asset impairments, including real estate consolidation costs.

Program charges are recognized within Accelerating Aon United Program expenses on the accompanying Consolidated Statements of Income and consists of the following cost activities:

•Technology and other – includes costs associated with actions taken to rationalize applications, such as 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 $1,000 million, consisting of approximately $900 million of cash charges and approximately $100 million of non-cash charges. For the year ended December 31, 2023, total Program costs incurred were $135 million. 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 Consolidated Statements of Financial Position.

The changes in the Company’s liabilities for the Program as of December 31, 2023 are as follows (in millions):


	Technology and other		Workforce optimization		Asset impairments		Total
Liability Balance as of January 1, 2023	$	—	$	—	$	—	$	—
Charges	14		103		18		135
Cash payments	—		(13)		—		(13)
Foreign currency translation and other	—		1		—		1
Non-cash charges	—		(5)		(18)		(23)
Liability balance as of December 31, 2023	$	14	$	86	$	—	$	100
Total costs incurred from inception to date	$	14	$	103	$	18	$	135