Intangible Assets

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

The following table outlines the Company’s identifiable intangible assets:

	December 31, 2018				December 31, 2017
(In millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Definite-lived intangibles
Customer relationships	$	1,891	$	640	$	1,924	$	494
Trade name	52		52		54		52
Non-compete agreements	16		14		17		14
	$	1,959	$	706	$	1,995	$	560

Estimated future amortization expense for amortizable intangible assets for the next five years is as follows:

(In millions)	2019		2020		2021		2022		2023		Thereafter
Estimated amortization expense	$	151	$	145	$	138	$	128	$	111	$	580

Actual amounts of amortization expense may differ from estimated amounts due to changes in foreign currency exchange rates, additional intangible asset acquisitions, impairment of intangible assets, accelerated amortization of intangible assets and other events.

Intangible asset amortization expense recorded in SG&A was $159 million, $164 million and $174 million for the years ended December 31, 2018, 2017 and 2016, respectively.