Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill balances and adjustments by reportable segment

The following table presents goodwill activities during the three months ended March 31, 2018 (in millions):

	December 31, 2017		Goodwill Acquired		Adjustments		March 31, 2018
Goodwill	$	4,773	$	—	$	42	$	4,815

Schedule of identifiable intangible assets

The components of identifiable intangible assets as of March 31, 2018 and December 31, 2017 are as follows (in millions, except years): 

	March 31, 2018								December 31, 2017
	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)
Intangible assets:
Customer lists and user base	$	465	$	(440	)	$	25	5	$	458	$	(430	)	$	28	5
Marketing related	614		(599		)	15		5	607		(587		)	20		5
Developed technologies	274		(265		)	9		3	273		(258		)	15		3
All other	157		(153		)	4		4	156		(150		)	6		4
Total	$	1,510	$	(1,457	)	$	53		$	1,494	$	(1,425	)	$	69

Schedule of future intangible asset amortization

Expected future intangible asset amortization as of March 31, 2018 is as follows (in millions):

Fiscal year:
Remaining 2018	$	29
2019	17
2020	7
Thereafter	—
Total	$	53