Condensed Consolidated Statements of Financial Position - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 484	$ 756
Short-term investments	167	529
Receivables, net	2,656	2,478
Fiduciary assets	9,314	9,625
Other current assets	727	289
Total current assets	13,348	13,677
Goodwill	8,282	8,358
Intangible assets, net	1,260	1,733
Fixed assets, net	594	564
Deferred tax assets	476	389
Prepaid pension	1,208	1,060
Other non-current assets	434	307
Total assets	25,602	26,088
Current liabilities
Accounts payable and accrued liabilities	1,600	1,961
Short-term debt and current portion of long-term debt	741	299
Fiduciary liabilities	9,314	9,625
Other current liabilities	988	870
Total current liabilities	12,643	12,755
Long-term debt	5,665	5,667
Deferred tax liabilities	273	127
Pension, other postretirement, and postemployment liabilities	1,603	1,789
Other non-current liabilities	1,090	1,102
Total liabilities	21,274	21,440
Equity
Ordinary shares - $0.01 nominal value Authorized: 750 shares (issued: 2018 - 241.2; 2017 - 247.6)	2	2
Additional paid-in capital	5,850	5,775
Retained earnings	2,042	2,302
Accumulated other comprehensive loss	(3,632)	(3,496)
Total Aon shareholders' equity	4,262	4,583
Noncontrolling interests	66	65
Total equity	4,328	4,648
Total liabilities and equity	$ 25,602	$ 26,088