Segment Information

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Segment Information

Segment Information

The Company has two reportable segments: Risk Solutions and HR Solutions. Unallocated income and expenses, when combined with the operating segments and after the elimination of intersegment revenues and expenses, equal the amounts in the Consolidated Financial Statements.

Reportable operating segments have been determined using a management approach, which is consistent with the basis and manner in which Aon's chief operating decision maker ("CODM") uses financial information for the purposes of allocating resources and evaluating performance. The CODM assesses performance based on operating income and generally accounts for inter-segment revenue as if the revenue were from third parties and at what management believes are current market prices. The Company does not present net assets by segment as this information is not reviewed by the CODM.

Risk Solutions acts as an advisor and insurance and reinsurance broker, helping clients manage their risks, via consultation, as well as negotiation and placement of insurance risk with insurance carriers through Aon's global distribution network.

HR Solutions partners with organizations to solve their most complex benefits, talent and related financial challenges, and improve business performance by designing, implementing, communicating and administering a wide range of human capital, retirement, investment management, health care, compensation and talent management strategies.

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

Years ended December 31	2013			2012			2011
Risk Solutions	$	7,789		$	7,632		$	7,537
HR Solutions	4,057			3,925			3,781
Intersegment elimination	(31		)	(43		)	(31		)
Total revenue	$	11,815		$	11,514		$	11,287

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

Years ended December 31	2013			2012			2011
Retail brokerage	$	6,256		$	6,089		$	6,022
Reinsurance brokerage	1,505			1,505			1,463
Total Risk Solutions Segment	7,761			7,594			7,485
Consulting services	1,626			1,585			1,546
Outsourcing	2,469			2,372			2,258
Intrasegment	(38		)	(32		)	(23		)
Total HR Solutions Segment	4,057			3,925			3,781
Intersegment	(31		)	(43		)	(31		)
Total commissions, fees and other revenue	$	11,787		$	11,476		$	11,235

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

Years ended December 31	2013		2012		2011
Risk Solutions	$	28	$	38	$	52
HR Solutions	—		—		—
Total fiduciary investment income	$	28	$	38	$	52

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

Years ended December 31	2013			2012			2011
Risk Solutions	$	1,540		$	1,493		$	1,413
HR Solutions	318			289			336
Segment income before income taxes	1,858			1,782			1,749
Unallocated expenses	(187		)	(186		)	(153		)
Interest income	9			10			18
Interest expense	(210		)	(228		)	(245		)
Other income	68			2			19
Income before income taxes	$	1,538		$	1,380		$	1,388

Unallocated expenses include administrative or other costs not attributable to the operating segments, such as corporate governance costs. Interest income represents income earned primarily on operating cash balances and certain income producing securities. Interest expense represents the cost of worldwide debt obligations.

Other income consists of equity earnings, realized gains or losses on the sale of investments, gains or losses on the disposal of businesses, gains or losses on derivatives, and gains or losses on foreign currency transactions.

Revenues are generally attributed to geographic areas based on the location of the resources producing the revenues. Intercompany revenues and expenses are eliminated in consolidated results.

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
2013	$	11,815	$	5,574	$	1,214	$	1,544	$	2,304	$	1,179
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

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
2013	$	13,728	$	7,720	$	559	$	2,392	$	2,440	$	617
2012	13,819		8,355		599		1,721		2,462		682