Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 822	$ 884
Short-term investments	171	308
Receivables, net	3,526	3,070
Fiduciary assets	13,894	13,798
Other current assets	492	624
Total current assets	18,905	18,684
Goodwill	8,587	8,666
Intangible assets, net	594	640
Fixed assets, net	584	599
Operating lease right-of-use assets	867	911
Deferred tax assets	721	724
Prepaid pension	1,321	1,280
Other non-current assets	596	610
Total assets	32,175	32,114
Current liabilities
Accounts payable and accrued liabilities	1,628	2,016
Short-term debt and current portion of long-term debt	0	448
Fiduciary liabilities	13,894	13,798
Other current liabilities	1,301	1,171
Total current liabilities	16,823	17,433
Long-term debt	7,263	7,281
Non-current operating lease liabilities	849	897
Deferred tax liabilities	293	262
Pension, other postretirement, and postemployment liabilities	1,681	1,763
Other non-current liabilities	905	895
Total liabilities	27,814	28,531
Equity
Ordinary shares - $0.01 nominal value Authorized: 500 shares (issued: 2021 - 226.2; 2020 - 225.5)	2	2
Additional paid-in capital	6,348	6,312
Retained earnings	1,801	1,042
Accumulated other comprehensive loss	(3,891)	(3,861)
Total Aon shareholders' equity	4,260	3,495
Noncontrolling interests	101	88
Total equity	4,361	3,583
Total liabilities and equity	$ 32,175	$ 32,114