Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 952	$ 690
Short-term investments	200	452
Receivables, net	3,764	3,035
Fiduciary assets	18,193	15,900
Other current assets	840	646
Total current assets	23,949	20,723
Goodwill	8,360	8,292
Intangible assets, net	268	447
Fixed assets, net	639	558
Operating lease right-of-use assets	678	699
Deferred tax assets	963	824
Prepaid pension	691	652
Other non-current assets	501	509
Total assets	36,049	32,704
Current liabilities
Accounts payable and accrued liabilities	1,625	2,114
Short-term debt and current portion of long-term debt	1,338	945
Fiduciary liabilities	18,193	15,900
Other current liabilities	1,793	1,347
Total current liabilities	22,949	20,306
Long-term debt	9,989	9,825
Non-current operating lease liabilities	675	693
Deferred tax liabilities	120	99
Pension, other postretirement, and postemployment liabilities	1,159	1,186
Other non-current liabilities	995	1,024
Total liabilities	35,887	33,133
Equity (deficit)
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2023 - 203.2; 2022 - 205.4)	2	2
Additional paid-in capital	6,906	6,864
Accumulated deficit	(2,505)	(2,772)
Accumulated other comprehensive loss	(4,338)	(4,623)
Total Aon shareholders' equity (deficit)	65	(529)
Noncontrolling interests	97	100
Total equity (deficit)	162	(429)
Total liabilities and equity	$ 36,049	$ 32,704