Goodwill and Other Intangibles (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

Changes in the carrying amount of goodwill are as follows:

March 31,
(In millions of dollars)	2016		2015
Balance as of January 1, as reported	$	7,889	$	7,241
Goodwill acquired	61		12
Other adjustments(a)	—		(93		)
Balance at March 31,	$	7,950	$	7,160

^(a)  Primarily reflects the impact of foreign exchange in each period.

Amortized Intangible Assets

The gross cost and accumulated amortization at March 31, 2016 and December 31, 2015 are as follows:

	March 31, 2016						December 31, 2015
(In millions of dollars)	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Client Relationships	$	1,312	$	372	$	940	$	1,281	$	347	$	934
Other (a)	174		79		95		176		74		102
Amortized intangibles	$	1,486	$	451	$	1,035	$	1,457	$	421	$	1,036

(a) Primarily non-compete agreements, trade names and developed technology.

Estimated Future Aggregate Amortization Expense

The estimated future aggregate amortization expense is as follows:

For the Years Ending December 31,
(In millions of dollars)	Estimated Expense
2016 (excludes amortization through March 31, 2016)	$	87
2017	123
2018	121
2019	116
2020	120
Subsequent years	468
	$	1,035