Property, Plant, and Equipment and Intangible Assets

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant, and Equipment and Intangible Assets

PROPERTY, PLANT, AND EQUIPMENT AND INTANGIBLE ASSETS

Property, Plant, and Equipment

The following is a summary of Property, plant, and equipment by classification:

	Average Estimated Useful Life	December 31,
		2021		2020
	(years)	(millions)
Property, plant, and equipment
Gathering systems	34	$	2,206	$	2,111
Pipeline and related assets	41	1,595		1,593
Land, structures, and other equipment	21	308		277
		$	4,109	$	3,981
Accumulated depreciation
Gathering systems		$	(362)	$	(301)
Pipeline and related assets		(213)		(174)
Land, structure, and other equipment		(44)		(36)
		(619)		(511)
Net Property, plant, and equipment		$	3,490	$	3,470

Pipeline includes base natural gas of $50 million at December 31, 2021 and 2020. Base natural gas is not subject to depreciation.

Intangible Assets

DT Midstream has intangible assets as shown below:

		December 31, 2021						December 31, 2020
	Useful Lives	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
		(millions)
Intangible assets subject to amortization
Customer relationships	25 - 40 years (a)	$	2,252	$	(177)	$	2,075	$	2,252	$	(120)	$	2,132
Contract intangibles	14 - 26 years	18		(11)		7		18		(10)		8
Total		$	2,270	$	(188)	$	2,082	$	2,270	$	(130)	$	2,140

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(a) The useful lives of the customer relationship intangible assets are based on the number of years in which the assets are expected to economically contribute to the business. The expected economic benefit incorporates existing customer contracts and expected renewal rates based on the estimated volume and production lives of gas resources in the region.

The following table summarizes DT Midstream’s estimated customer relationships and contract intangibles amortization expense to be recognized during each year through 2026:

	2022		2023		2024		2025		2026
	(millions)
Estimated amortization expense	$	57	$	57	$	57	$	57	$	57

Depreciation and Amortization

The following is a summary of Depreciation and amortization expense by asset type:

	Year Ended December 31,
	2021		2020		2019
	(millions)
Property, plant, and equipment	$	108	$	97	$	69
Customer relationships and other intangible assets, net	58		55		24
Total Depreciation and amortization	$	166	$	152	$	93