Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Current assets
Cash and cash equivalents	$ 1,178	$ 1,195
Short-term investments	238	1,603
Receivables, net	5,089	4,209
Fiduciary assets	18,905	17,889
Other current assets	753	878
Total current assets	26,163	25,774
Goodwill	15,925	15,797
Intangible assets, net	5,826	5,727
Fixed assets, net	714	702
Operating lease right-of-use assets	674	677
Deferred tax assets	737	748
Prepaid pension	598	603
Other non-current assets	792	756
Total assets	51,429	50,784
Current liabilities
Accounts payable and accrued liabilities	2,208	2,861
Short-term debt and current portion of long-term debt	1,121	589
Fiduciary liabilities	18,905	17,889
Other current liabilities	2,303	1,887
Total current liabilities	24,537	23,226
Long-term debt	13,542	14,660
Non-current operating lease liabilities	633	641
Deferred tax liabilities	350	340
Pension, other postretirement, and postemployment liabilities	1,028	1,084
Other non-current liabilities	1,359	1,285
Total liabilities	41,449	41,236
Redeemable noncontrolling interests	22	89
Equity
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: at March 31, 2026 - 213.6; at December 31, 2025 - 214.5)	2	2
Additional paid-in capital	13,453	13,438
Retained earnings (Accumulated deficit)	307	(245)
Accumulated other comprehensive loss	(3,928)	(3,843)
Total Aon shareholders' equity	9,834	9,352
Nonredeemable noncontrolling interests	124	107
Total equity	9,958	9,459
Total liabilities, redeemable noncontrolling interests and equity	$ 51,429	$ 50,784