Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Other Intangible Assets

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

The changes in the net carrying amount of goodwill by operating segment for the years ended December 31, 2012 and 2011, respectively, are as follows (in millions):

	Risk Solutions			HR Solutions			Total
Balance as of January 1, 2011	$	5,549		$	3,098		$	8,647
Goodwill related to Hewitt acquisition		—			50			50
Goodwill related to other acquisitions		73			4			77
Goodwill related to disposals		(2	)		—			(2	)
Goodwill related to other prior year acquisitions		—			1			1
Transfers		(83	)		83			—
Foreign currency translation		20			(23	)		(3	)
Balance as of December 31, 2011	$	5,557		$	3,213		$	8,770
Goodwill related to acquisitions		49			47			96
Goodwill related to disposals		(1	)		—			(1	)
Goodwill related to other prior year acquisitions		(6	)		—			(6	)
Transfers (1)		313			(313	)		—
Foreign currency translation		70			14			84
Balance as of December 31, 2012	$	5,982		$	2,961		$	8,943

(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

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

	As of December 31
	2012						2011
	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	$	1,024	$	—	$	1,024
Intangible assets with finite lives:
Tradenames		7		3		4		4		1		3
Customer related and contract based		2,714		969		1,745		2,608		615		1,993
Marketing, technology and other		612		411		201		606		350		256
	$	4,358	$	1,383	$	2,975	$	4,242	$	966	$	3,276

Schedule of estimated future amortization expense on intangible assets

  The estimated future amortization for intangible assets as of December 31, 2012 is as follows (in millions):

	HR Solutions		Risk Solutions		Total
2013	$	281	$	113	$	394
2014		245		98		343
2015		214		85		299
2016		179		72		251
2017		142		57		199
Thereafter		351		113		464
	$	1,412	$	538	$	1,950