Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill allocated to our disclosed segments for the years ended December 31, 2015 and 2016 were as follows (in millions):



	Google			Other Bets			Total Consolidated
Balance as of December 31, 2014	$	15,599		$	0		$	15,599
Acquisitions	139			0			139
Foreign currency translation and other adjustments	(71		)	0			(71		)
Allocation in the fourth quarter of 2015	(416		)	416			0
Acquisitions	201			4			205
Foreign currency translation and other adjustments	4			(7		)	(3		)
Balance as of December 31, 2015	$	15,456		$	413		$	15,869
Acquisitions	625			39			664
Foreign currency translation and other adjustments	(54		)	(11		)	(65		)
Balance as of December 31, 2016	$	16,027		$	441		$	16,468

Schedule of finite-lived intangible assets

Information regarding our purchased intangible assets is as follows (in millions):



	As of December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Patents and developed technology	$	6,592	$	3,213	$	3,379
Customer relationships	1,343		1,201		142
Trade names and other	795		469		326
Total	$	8,730	$	4,883	$	3,847



	As of December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Value
Patents and developed technology	$	5,542	$	2,710	$	2,832
Customer relationships	352		197		155
Trade names and other	463		143		320
Total	$	6,357	$	3,050	$	3,307

Schedule of future amortization expense

As of December 31, 2016, expected amortization expense relating to purchased intangible assets for each of the next five years and thereafter was as follows (in millions):



2017	$	764
2018	685
2019	579
2020	487
2021	460
Thereafter	332
	$	3,307