Consolidated Statements of Financial Position - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 1,195	$ 1,085
Short-term investments	1,603	219
Receivables, net	4,209	3,803
Fiduciary assets	17,889	17,566
Other current assets	878	759
Total current assets	25,774	23,432
Goodwill	15,797	15,234
Intangible assets, net	5,727	6,743
Fixed assets, net	702	637
Operating lease right-of-use assets	677	711
Deferred tax assets	748	654
Prepaid pension	603	556
Other non-current assets	756	998
Total assets	50,784	48,965
Current liabilities
Accounts payable and accrued liabilities	2,861	2,905
Short-term debt and current portion of long-term debt	589	751
Fiduciary liabilities	17,889	17,566
Other current liabilities	1,887	1,773
Total current liabilities	23,226	22,995
Long-term debt	14,660	16,265
Non-current operating lease liabilities	641	685
Deferred tax liabilities	340	319
Pension, other postretirement, and postemployment liabilities	1,084	1,127
Other non-current liabilities	1,285	1,144
Total liabilities	41,236	42,535
Redeemable noncontrolling interests	89	125
Equity
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2025 - 214.5; 2024 - 216.0)	2	2
Additional paid-in capital	13,438	13,173
Accumulated deficit	(245)	(2,309)
Accumulated other comprehensive loss	(3,843)	(4,745)
Total Aon shareholders' equity	9,352	6,121
Nonredeemable noncontrolling interests	107	184
Total equity	9,459	6,305
Total liabilities, redeemable noncontrolling interests, and equity	$ 50,784	$ 48,965