Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

Other intangible assets and the related accumulated amortization consisted of the following as of December 31, 2017 and 2016 (in millions, except years):

	As of December 31,						Useful Life (Years)
	2017			2016
Customer relationships	$	3,923		$	4,063		3 to 25
Technology	461			438			2.5 to 11
Trading products with finite lives	237			237			20
Russell licensing rights	—			184			10
Data/databases	150			145			4 to 10
Market data provider relationships	11			11			20
Non-compete agreements	38			38			1 to 5
Other	33			31			1 to 5
	4,853			5,147
Less accumulated amortization	(1,200		)	(1,220		)
Total finite-lived intangible assets, net	3,653			3,927
Exchange registrations, licenses and contracts with indefinite lives	6,243			6,083
Trade names and trademarks with indefinite lives	280			294
In-process research and development	85			108
Other	8			8
Total indefinite-lived intangible assets	6,616			6,493
Total other intangible assets, net	$	10,269		$	10,420

The following is a summary of the activity in the goodwill balance for the years ended December 31, 2017 and 2016 (in millions):

Goodwill balance at January 1, 2016	$	12,079
Acquisitions	307
Foreign currency translation	(135		)
Other activity, net	40
Goodwill balance at December 31, 2016	12,291
Acquisitions	211
Divestitures	(344		)
Foreign currency translation	63
Other activity, net	(5		)
Goodwill balance at December 31, 2017	$	12,216

The following is a summary of the activity in the other intangible assets balance for the years ended December 31, 2017 and 2016 (in millions):

Other intangible assets balance at January 1, 2016	$	10,758
Acquisitions	180
Foreign currency translation	(155		)
Creditex customer relationship intangible asset impairment	(33		)
Amortization of other intangible assets	(323		)
Other activity, net	(7		)
Other intangible assets balance at December 31, 2016	10,420
Acquisitions	274
Divestitures	(216		)
Foreign currency translation	69
Amortization of other intangible assets	(272		)
Other activity, net	(6		)
Other intangible assets balance at December 31, 2017	$	10,269

Schedule of Future Amortization Expense

We expect future amortization expense from the finite-lived intangible assets as of December 31, 2017 to be as follows (in millions):

2018	$	260
2019	254
2020	216
2021	205
2022	200
Thereafter	2,518
	$	3,653