Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 995	$ 778
Short-term investments	5,413	369
Receivables, net	4,035	3,254
Fiduciary assets	17,161	16,307
Other current assets	1,020	996
Total current assets	28,624	21,704
Goodwill	8,302	8,414
Intangible assets, net	217	234
Fixed assets, net	590	638
Operating lease right-of-use assets	628	650
Deferred tax assets	1,254	1,195
Prepaid pension	627	618
Other non-current assets	525	506
Total assets	40,767	33,959
Current liabilities
Accounts payable and accrued liabilities	1,925	2,262
Short-term debt and current portion of long-term debt	606	1,204
Fiduciary liabilities	17,161	16,307
Other current liabilities	2,146	1,878
Total current liabilities	21,838	21,651
Long-term debt	15,916	9,995
Non-current operating lease liabilities	611	641
Deferred tax liabilities	129	115
Pension, other postretirement, and postemployment liabilities	1,198	1,225
Other non-current liabilities	1,103	1,074
Total liabilities	40,795	34,701
Equity (deficit)
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2024 - 198.6; 2023 - 198.6)	2	2
Additional paid-in capital	6,969	6,944
Accumulated deficit	(2,700)	(3,399)
Accumulated other comprehensive loss	(4,404)	(4,373)
Total Aon shareholders' deficit	(133)	(826)
Noncontrolling interests	105	84
Total deficit	(28)	(742)
Total liabilities and equity (deficit)	$ 40,767	$ 33,959