Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 1,103	$ 778
Short-term investments	196	369
Receivables, net	4,004	3,254
Fiduciary assets	17,596	16,307
Other current assets	754	996
Total current assets	23,653	21,704
Goodwill	15,612	8,414
Intangible assets, net	6,789	234
Fixed assets, net	650	638
Operating lease right-of-use assets	737	650
Deferred tax assets	1,209	1,195
Prepaid pension	650	618
Other non-current assets	585	506
Total assets	49,885	33,959
Current liabilities
Accounts payable and accrued liabilities	2,588	2,262
Short-term debt and current portion of long-term debt	0	1,204
Fiduciary liabilities	17,596	16,307
Other current liabilities	1,914	1,878
Total current liabilities	22,098	21,651
Long-term debt	17,090	9,995
Non-current operating lease liabilities	712	641
Deferred tax liabilities	1,086	115
Pension, other postretirement, and postemployment liabilities	1,168	1,225
Other non-current liabilities	1,178	1,074
Total liabilities	43,332	34,701
Redeemable noncontrolling interests	135	0
Equity (deficit)
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2024 - 216.5; 2023 - 198.6)	2	2
Additional paid-in capital	13,045	6,944
Accumulated deficit	(2,682)	(3,399)
Accumulated other comprehensive loss	(4,121)	(4,373)
Total Aon shareholders' equity (deficit)	6,244	(826)
Nonredeemable noncontrolling interests	174	84
Total equity (deficit)	6,418	(742)
Total liabilities, redeemable noncontrolling interests and equity (deficit)	$ 49,885	$ 33,959