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Schedule of Change in Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2022

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation [Table Text Block]

A reconciliation of our AROs is as follows:

(in millions)			March 31, 2022						December 31, 2021
AROs, beginning of period			$	1,749.3					$	1,393.9
Liabilities incurred			4.6						20.2
Liabilities settled			(54.1)						(163.1)
Accretion expense			19.6						71.9
Revisions in estimated cash flows			12.1						443.3
Foreign currency translation			39.9						(16.9)
AROs, end of period			1,771.4						1,749.3
Less current portion			218.0						222.4
Non-current portion of AROs			$	1,553.4					$	1,526.9

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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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