Condensed Consolidated Statements of Financial Position (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
CURRENT ASSETS
Cash and cash equivalents	$ 300	$ 346
Short-term investments	515	785
Receivables, net	2,785	2,701
Fiduciary assets	11,760	10,063
Other current assets	571	624
Total Current Assets	15,931	14,519
Goodwill	8,975	8,647
Intangible assets, net	3,484	3,611
Fixed assets, net	798	781
Investments	249	312
Other non-current assets	1,059	1,112
TOTAL ASSETS	30,496	28,982
CURRENT LIABILITIES
Fiduciary liabilities	11,760	10,063
Short-term debt and current portion of long-term debt	52	492
Accounts payable and accrued liabilities	1,557	1,810
Other current liabilities	618	584
Total Current Liabilities	13,987	12,949
Long-term debt	4,479	4,014
Pension and other post employment liabilities	1,773	1,896
Other non-current liabilities	1,792	1,817
TOTAL LIABILITIES	22,031	20,676
EQUITY
Common stock-$1 par value Authorized: 750 shares (issued: 2011 - 386.3; 2010 - 385.9)	386	386
Additional paid-in capital	3,946	4,000
Retained earnings	8,233	7,861
Treasury stock at cost (shares: 2011 - 59.6; 2010 - 53.6)	(2,469)	(2,079)
Accumulated other comprehensive loss	(1,698)	(1,917)
TOTAL AON STOCKHOLDERS' EQUITY	8,398	8,251
Noncontrolling interests	67	55
TOTAL EQUITY	8,465	8,306
TOTAL LIABILITIES AND EQUITY	$ 30,496	$ 28,982