Accelerating Aon United Program (Tables)

12 Months Ended

Dec. 31, 2024

Restructuring and Related Activities [Abstract]

Schedule of Program Costs Incurred

Total Program costs incurred for the years ended December 31, 2024 and 2023 are as follows (in millions):

	Years Ended December 31
	2024		2023
Risk Capital	$	114	$	57
Human Capital	27		23
Corporate	248		55
Total	$	389	$	135

Schedule of restructuring liabilities for the program

The changes in the Company’s liabilities for the Program as of December 31, 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	126		197		66		389
Cash payments	(96)		(172)		—		(268)
Foreign currency translation and other	—		(3)		—		(3)
Non-cash charges (1)	(27)		(11)		(66)		(104)
Liability balance as of December 31, 2024	$	17	$	97	$	—	$	114
Total costs incurred from inception to date	$	140	$	300	$	84	$	524

(1)For the year ended December 31, 2024, the Company recognized $27 million of accelerated ROU asset amortization or impairments due to the Company’s decision to exit certain leased properties as a result of the 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.