Accelerating Aon United Program (Tables)

12 Months Ended

Dec. 31, 2025

Restructuring and Related Activities [Abstract]

Schedule of Program Costs Incurred

Total Program costs incurred for the years ended December 31, 2025 and 2024 are as follows (in millions):

	Years Ended December 31
	2025		2024
Risk Capital	$	82	$	114
Human Capital	16		27
Corporate	267		248
Total	$	365	$	389

Schedule of restructuring liabilities for the program

The changes in the Company’s liabilities for the Program as of December 31, 2025 are as follows (in millions):

	Technology and other		Workforce optimization		Asset impairments		Total
Liability balance as of December 31, 2024	$	17	$	97	$	—	$	114
Charges	195		155		15		365
Cash payments	(165)		(132)		—		(297)
Foreign currency translation and other	—		6		—		6
Non-cash charges	(8)		(18)		(15)		(41)
Liability balance as of December 31, 2025	$	39	$	108	$	—	$	147
Total costs incurred from inception to date	$	335	$	455	$	99	$	889