Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 974	$ 778
Short-term investments	182	369
Receivables, net	4,459	3,254
Fiduciary assets	18,865	16,307
Other current assets	1,063	996
Total current assets	25,543	21,704
Goodwill	15,281	8,414
Intangible assets, net	6,794	234
Fixed assets, net	636	638
Operating lease right-of-use assets	723	650
Deferred tax assets	1,218	1,195
Prepaid pension	629	618
Other non-current assets	629	506
Total assets	51,453	33,959
Current liabilities
Accounts payable and accrued liabilities	2,319	2,262
Short-term debt and current portion of long-term debt	4	1,204
Fiduciary liabilities	18,865	16,307
Other current liabilities	2,310	1,878
Total current liabilities	23,498	21,651
Long-term debt	17,610	9,995
Non-current operating lease liabilities	702	641
Deferred tax liabilities	1,177	115
Pension, other postretirement, and postemployment liabilities	1,173	1,225
Other non-current liabilities	1,135	1,074
Total liabilities	45,295	34,701
Redeemable noncontrolling interests	130	0
Equity (deficit)
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2024 - 217.2; 2023 - 198.6)	2	2
Additional paid-in capital	12,910	6,944
Accumulated deficit	(2,574)	(3,399)
Accumulated other comprehensive loss	(4,478)	(4,373)
Total Aon shareholders' equity (deficit)	5,860	(826)
Nonredeemable noncontrolling interests	168	84
Total equity (deficit)	6,028	(742)
Total liabilities, redeemable noncontrolling interests and equity (deficit)	$ 51,453	$ 33,959