Segment Information (Tables)

12 Months Ended

Dec. 31, 2011

Segment Reporting Information

Schedule of total revenue by business segments

Years ended December 31	2011			2010			2009
Risk Solutions	$	6,817		$	6,423		$	6,305
HR Solutions		4,501			2,111			1,267
Intersegment elimination		(31	)		(22	)		(26	)
Total operating segments		11,287			8,512			7,546
Unallocated		—			—			49
Total revenue	$	11,287		$	8,512		$	7,595

Schedule of commissions, fees and other revenues by products

Years ended December 31	2011			2010			2009
Retail brokerage	$	5,303		$	4,925		$	4,747
Reinsurance brokerage		1,463			1,444			1,485
Total Risk Solutions Segment		6,766			6,369			6,232
Consulting services		2,251			1,387			1,075
Outsourcing		2,272			731			191
Intrasegment		(23	)		(8	)		—
Total HR Solutions Segment		4,500			2,110			1,266
Intersegment		(31	)		(22	)		(26	)
Unallocated		—			—			49
Total commissions, fees and other revenues	$	11,235		$	8,457		$	7,521

Schedule of fiduciary investment income by business segments

Years ended December 31	2011		2010		2009
Risk Solutions	$	51	$	54	$	73
HR Solutions		1		1		1
Total fiduciary investment income	$	52	$	55	$	74

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

Years ended December 31	2011			2010			2009
Risk Solutions	$	1,314		$	1,194		$	900
HR Solutions		448			234			203
Segment income from continuing operations before income taxes		1,762			1,428			1,103
Unallocated revenue		—			—			49
Unallocated expenses		(156	)		(202	)		(131	)
Interest income		18			15			16
Interest expense		(245	)		(182	)		(122	)
Other income		5			—			34
Income from continuing operations before income taxes	$	1,384		$	1,059		$	949

Schedule of consolidated revenue and long-lived assets 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
2011	$	11,287	$	5,134	$	1,176	$	1,519	$	2,377	$	1,081
2010		8,512		3,400		978		1,322		2,035		777
2009		7,595		2,789		905		1,289		1,965		647

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

Years ended December 31	Total		United States		Americas other than U.S.		United Kingdom		Europe, Middle East, & Africa		Asia Pacific
2011	$	13,789	$	8,617	$	574	$	1,589	$	2,448	$	561
2010		14,158		9,135		503		1,532		2,426		562

Move of the Health and Benefits consulting business

Segment Reporting Information

Schedule of total revenue by business segments

Years ended December 31	2011			2010			2009
Risk Solutions	$	7,537		$	6,989		$	6,835
HR Solutions		3,781			1,545			737
Intersegment elimination		(31	)		(22	)		(26	)
Total operating segments		11,287			8,512			7,546
Unallocated		—			—			49
Total revenue	$	11,287		$	8,512		$	7,595

Schedule of commissions, fees and other revenues by products

Years ended December 31	2011			2010			2009
Retail brokerage	$	6,022		$	5,491		$	5,277
Reinsurance brokerage		1,463			1,444			1,485
Total Risk Solutions Segment		7,485			6,935			6,762
Consulting services		1,532			821			545
Outsourcing		2,272			731			191
Intrasegment		(23	)		(8	)		—
Total HR Solutions Segment		3,781			1,544			736
Intersegment		(31	)		(22	)		(26	)
Unallocated		—			—			49
Total commissions, fees and other revenue	$	11,235		$	8,457		$	7,521

Schedule of fiduciary investment income by business segments

Years ended December 31	2011		2010		2009
Risk Solutions	$	52	$	54	$	73
HR Solutions		—		1		1
Total fiduciary investment income	$	52	$	55	$	74

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

Years ended December 31	2011			2010			2009
Risk Solutions	$	1,414		$	1,307		$	1,003
HR Solutions		348			121			100
Segment income from continuing operations before income taxes		1,762			1,428			1,103
Unallocated revenue		—			—			49
Unallocated expenses		(156	)		(202	)		(131	)
Interest income		18			15			16
Interest expense		(245	)		(182	)		(122	)
Other income		5			—			34
Income from continuing operations before income taxes	$	1,384		$	1,059		$	949