Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Changes in Carrying Amount of Goodwill By Reportable Segments

Changes in the carrying amount of goodwill for our reportable segments for the years ended December 31, 2012 and 2011 were as follows:

	Retail			Employer Group		Health & Well-Being Services		Other Businesses		Total
	(in millions)
Balance at December 31, 2010	$	593		$	62	$	1,856	$	57	$	2,568
Acquisitions		161			0		8		0		169
Subsequent payments/adjustments		0			0		3		0		3
Balance at December 31, 2011	$	754		$	62	$	1,867	$	57	$	2,740
Acquisitions		98			0		753		43		894
Subsequent payments/adjustments		(3	)		9		0		0		6
Balance at December 31, 2012	$	849		$	71	$	2,620	$	100	$	3,640

Details of Intangible Assets Included in Other Long-Term Assets

The following table presents details of our other intangible assets included in other long-term assets in the accompanying consolidated balance sheets at December 31, 2012 and 2011:

	Weighted Average Life		2012						2011
			Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
			(in millions)
Other intangible assets:
Customer contracts/relationships		9.5 yrs	$	733	$	237	$	496	$	429	$	182	$	247
Trade names and technology		13.6 yrs		190		21		169		135		6		129
Provider contracts		15.0 yrs		51		19		32		44		15		29
Noncompetes and other		6.5 yrs		51		17		34		40		10		30
Total other intangible assets		10.4 yrs	$	1,025	$	294	$	731	$	648	$	213	$	435

Schedule of Estimated Amortization Expense

The following table presents our estimate of amortization expense for each of the five next succeeding fiscal years:

	(in millions)
For the years ending December 31,:
2013	$	110
2014		102
2015		90
2016		84
2017		76