Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Identifiable 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

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