Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

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

The change in the net carrying amount of goodwill by reportable segment for the three months ended March 31, 2013 is as follows (in millions):

	Risk Solutions			HR Solutions			Total
Balance as of December 31, 2012	$	5,982		$	2,961		$	8,943
Goodwill related to current year acquisitions	—			2			2
Goodwill related to prior year acquisitions	(2		)	—			(2		)
Foreign currency translation	(136		)	(21		)	(157		)
Balance as of March 31, 2013	$	5,844		$	2,942		$	8,786

Schedule of other intangible assets by asset class

Other intangible assets by asset class are as follows (in millions):

	March 31, 2013						December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets with indefinite lives:
Tradenames	$	1,025	$	—	$	1,025	$	1,025	$	—	$	1,025
Intangible assets with finite lives:
Customer related and contract based	2,670		1,037		1,633		2,714		969		1,745
Marketing, technology and other (1)	605		419		186		619		414		205
	$	4,300	$	1,456	$	2,844	$	4,358	$	1,383	$	2,975

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(1) Tradenames with finite lives disclosed separately in prior years are now presented in Marketing, technology and other

Schedule of estimated future amortization expense on intangible assets

The estimated future amortization for intangible assets as of March 31, 2013 is as follows (in millions):

	HR Solutions		Risk Solutions		Total
Remainder of 2013	$	208	$	85	$	293
2014	243		96		339
2015	212		82		294
2016	177		69		246
2017	140		53		193
Thereafter	347		107		454
	$	1,327	$	492	$	1,819