Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 1,119	$ 690
Short-term investments	172	452
Receivables, net	3,713	3,035
Fiduciary assets	16,629	15,900
Other current assets	511	646
Total current assets	22,144	20,723
Goodwill	8,319	8,292
Intangible assets, net	425	447
Fixed assets, net	605	558
Operating lease right-of-use assets	684	699
Deferred tax assets	897	824
Prepaid pension	672	652
Other non-current assets	507	509
Total assets	34,253	32,704
Current liabilities
Accounts payable and accrued liabilities	1,681	2,114
Short-term debt and current portion of long-term debt	775	945
Fiduciary liabilities	16,629	15,900
Other current liabilities	1,510	1,347
Total current liabilities	20,595	20,306
Long-term debt	10,577	9,825
Non-current operating lease liabilities	681	693
Deferred tax liabilities	110	99
Pension, other postretirement, and postemployment liabilities	1,169	1,186
Other non-current liabilities	1,063	1,024
Total liabilities	34,195	33,133
Equity (deficit)
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2023 - 204.5; 2022 - 205.4)	2	2
Additional paid-in capital	6,860	6,864
Accumulated deficit	(2,388)	(2,772)
Accumulated other comprehensive loss	(4,544)	(4,623)
Total Aon shareholders' deficit	(70)	(529)
Noncontrolling interests	128	100
Total equity (deficit)	58	(429)
Total liabilities and equity	$ 34,253	$ 32,704