Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 808	$ 690
Short-term investments	175	452
Receivables, net	3,300	3,035
Fiduciary assets	15,965	15,900
Other current assets	877	646
Total current assets	21,125	20,723
Goodwill	8,245	8,292
Intangible assets, net	252	447
Fixed assets, net	652	558
Operating lease right-of-use assets	646	699
Deferred tax assets	1,022	824
Prepaid pension	673	652
Other non-current assets	497	509
Total assets	33,112	32,704
Current liabilities
Accounts payable and accrued liabilities	1,749	2,114
Short-term debt and current portion of long-term debt	1,282	945
Fiduciary liabilities	15,965	15,900
Other current liabilities	1,726	1,347
Total current liabilities	20,722	20,306
Long-term debt	9,969	9,825
Non-current operating lease liabilities	640	693
Deferred tax liabilities	117	99
Pension, other postretirement, and postemployment liabilities	1,146	1,186
Other non-current liabilities	1,004	1,024
Total liabilities	33,598	33,133
Equity (deficit)
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2023 - 200.8; 2022 - 205.4)	2	2
Additional paid-in capital	7,015	6,864
Accumulated deficit	(3,024)	(2,772)
Accumulated other comprehensive loss	(4,579)	(4,623)
Total Aon shareholders' deficit	(586)	(529)
Noncontrolling interests	100	100
Total deficit	(486)	(429)
Total liabilities and equity	$ 33,112	$ 32,704