Goodwill And Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

Changes in the carrying amount of goodwill are as follows:

(In millions of dollars)	2018			2017
Balance as of January 1, as reported	$	9,089		$	8,369
Goodwill acquired	626			551
Other adjustments(a)	(116		)	169
Balance at December 31,	$	9,599		$	9,089

(a) Primarily due to the impact of foreign exchange in both years.

Schedule of Finite-Lived Intangible Assets

The gross cost and accumulated amortization at December 31, 2018 and 2017 are as follows:

(In millions of dollars)	2018						2017
	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Client relationships	$	1,970	$	639	$	1,331	$	1,672	$	518	$	1,154
Other (a)	259		153		106		234		114		120
Amortized intangibles	$	2,229	$	792	$	1,437	$	1,906	$	632	$	1,274

(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)
2019	$	195
2020	176
2021	164
2022	149
2023	141
Subsequent years	612
	$	1,437