Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2012

Goodwill and Other Intangible Assets

Schedule of changes in the net carrying amount of goodwill by operating segment

(in millions)	Risk Solutions			HR Solutions			Total
Balance as of December 31, 2011	$	5,557		$	3,213		$	8,770
Goodwill related to current year acquisitions	52			5			57
Goodwill related to other prior year acquisitions	(6		)	—			(6		)
Transfer related to Health and Benefits Consulting (1)	313			(313		)	—
Foreign currency translation	(101		)	(7		)	(108		)
Balance as of June 30, 2012	$	5,815		$	2,898		$	8,713

(1)Effective January 1, 2012, the Health and Benefits Consulting business was transferred from the HR Solutions segment to the Risk Solutions segment.

Schedule of other intangible assets by asset class

	June 30, 2012						December 31, 2011
(in millions)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets with indefinite lives:
Trademarks	$	1,024	$	—	$	1,024	$	1,024	$	—	$	1,024
Intangible assets with finite lives:
Trademarks	4		2		2		4		1		3
Customer Related and Contract Based	2,642		789		1,853		2,608		615		1,993
Marketing, Technology and Other	599		372		227		606		350		256
	$	4,269	$	1,163	$	3,106	$	4,242	$	966	$	3,276

Schedule of estimated future amortization expense on intangible assets

(in millions)	HR Solutions		Risk Solutions		Total
Remainder of 2012	$	146	$	67	$	213
2013	275		108		383
2014	238		93		331
2015	208		78		286
2016	174		68		242
Thereafter	475		152		627
	$	1,516	$	566	$	2,082