Segment Information (Tables)

12 Months Ended

Dec. 31, 2012

Segment Information

Schedule of total revenue by business segments

Aon's total revenue is as follows (in millions):

Years ended December 31	2012			2011			2010
Risk Solutions	$	7,632		$	7,537		$	6,989
HR Solutions		3,925			3,781			1,545
Intersegment elimination		(43	)		(31	)		(22	)
Total revenue	$	11,514		$	11,287		$	8,512

Schedule of commissions, fees and other revenues by products

 Commissions, fees and other revenues by product are as follows (in millions):

Years ended December 31	2012			2011			2010
Retail brokerage	$	6,089		$	6,022		$	5,491
Reinsurance brokerage		1,505			1,463			1,444
Total Risk Solutions Segment		7,594			7,485			6,935
Consulting services		1,585			1,546			821
Outsourcing		2,372			2,258			731
Intrasegment		(32	)		(23	)		(8	)
Total HR Solutions Segment		3,925			3,781			1,544
Intersegment		(43	)		(31	)		(22	)
Total commissions, fees and other revenues	$	11,476		$	11,235		$	8,457

Schedule of fiduciary investment income by business segments

 Fiduciary investment income by segment is as follows (in millions):

Years ended December 31	2012		2011		2010
Risk Solutions	$	38	$	52	$	54
HR Solutions		—		—		1
Total fiduciary investment income	$	38	$	52	$	55

Schedule of reconciliation of segment income before tax to income from continuing operations before income taxes

A reconciliation of segment operating income before tax to income from continuing operations before income taxes is as follows (in millions):

Years ended December 31	2012			2011			2010
Risk Solutions	$	1,493		$	1,413		$	1,328
HR Solutions		289			336			121
Segment income from continuing operations before income taxes		1,782			1,749			1,449
Unallocated expenses		(186	)		(153	)		(205	)
Interest income		10			18			15
Interest expense		(228	)		(245	)		(182	)
Other income (expense)		3			15			(18	)
Income from continuing operations before income taxes	$	1,381		$	1,384		$	1,059

Schedule of consolidated revenue by geographic area

Consolidated revenue by geographic area is as follows (in millions):

Years ended December 31	Total		United States		Americas other than U.S.		United Kingdom		Europe, Middle East, & Africa		Asia Pacific
2012	$	11,514	$	5,336	$	1,190	$	1,541	$	2,271	$	1,176
2011		11,287		5,134		1,176		1,519		2,377		1,081
2010		8,512		3,400		978		1,322		2,035		777

Schedule of consolidated non-current assets by geographic area

 Consolidated non-current assets by geographic area are as follows (in millions):

As of December 31	Total		United States		Americas other than U.S.		United Kingdom		Europe, Middle East, & Africa		Asia Pacific
2012	$	13,819	$	8,355	$	599	$	1,721	$	2,462	$	682
2011		13,789		8,617		574		1,589		2,448		561