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Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2022

Asset Retirement Obligation [Abstract]

Changes In Liability For Asset Retirement Obligations

Changes in our liability for asset retirement obligations for the years 2022 and 2021 are presented in the table below:

(in millions)			2022						2021
Beginning Balance			$	512.4					$	495.6
Accretion recorded as a regulatory asset/liability			17.1						16.0
Additions			9.5						23.2
Settlements			(22.3)						(11.2)
Change in estimated cash flows			(3.2)						(11.2)
Ending Balance			$	513.5					$	512.4

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- References

No definition available.

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- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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