Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill balances and adjustments

The following table presents goodwill balances and adjustments to those balances for the years ended December 31, 2015 and 2014:

	December 31, 2013		Goodwill Acquired	Adjustments		December 31, 2014		Goodwill Acquired	Adjustments		December 31, 2015
	(In millions)
Goodwill	$	4,855	30	(214	)	$	4,671	23	(243	)	$	4,451

Schedule of identifiable intangible assets

The components of identifiable intangible assets are as follows: 

	December 31, 2015								December 31, 2014
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life (Years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life (Years)
	(In millions, except years)
Intangible assets:
Customer lists and user base	$	419	$	(399	)	$	20	5	$	434	$	(407	)	$	27	5
Marketing related	594		(570		)	24		5	642		(596		)	46		5
Developed technologies	238		(215		)	23		4	237		(195		)	42		4
All other	157		(134		)	23		4	144		(126		)	18		4
	$	1,408	$	(1,318	)	$	90		$	1,457	$	(1,324	)	$	133

Schedule of future intangible asset amortization

Expected future intangible asset amortization as of December 31, 2015 is as follows (in millions):

Fiscal years:
	2016	$	47
	2017	33
	2018	10
	2019	—
	2020	—
	Thereafter	—
		$	90