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PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment by Property Type

The following table sets forth our property, plant and equipment by property type, for the periods indicated:

						Estimated Useful Lives (Years)						December 31, 2021						December 31, 2020
												(Thousands of dollars)
Nonregulated
Gathering pipelines and related equipment						5 to 40						$	4,371,936					$	4,143,752
Processing and fractionation and related equipment						3 to 40						5,356,508						5,084,802
Storage and related equipment						3 to 54						874,522						798,785
Transmission pipelines and related equipment						5 to 54						886,343						810,434
General plant and other						2 to 60						695,117						647,675
Construction work in process						—						1,132,961						1,265,736
Regulated
Storage and related equipment						5 to 25						9,197						9,180
Natural gas transmission pipelines and related equipment						5 to 77						1,660,034						1,569,268
NGL transmission pipelines and related equipment						5 to 88						8,595,968						8,423,544
General plant and other						2 to 50						73,449						72,535
Construction work in process						—						164,504						247,224
Property, plant and equipment												23,820,539						23,072,935
Accumulated depreciation and amortization - nonregulated												(2,885,020)						(2,514,328)
Accumulated depreciation and amortization - regulated												(1,615,645)						(1,403,679)
Net property, plant and equipment												$	19,319,874					$	19,154,928

Average Depreciation Rates for Regulated Property

The average depreciation rates for our regulated property are set forth, by segment, in the following table for the periods indicated:

						Years Ended December 31,
						2021						2020						2019
Natural Gas Liquids						2.2%						2.2%						2.0%
Natural Gas Pipelines						2.1%						2.1%						2.1%

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- Definition

Tabular disclosure of the average depreciation rates of regulated property as of period end.

+ References

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- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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