ASSET RETIREMENT OBLIGATIONS (Tables)

12 Months Ended

Dec. 31, 2021

Asset Retirement Obligation [Abstract]

Schedule of Carrying Value of Asset Retirement Obligations

The changes in the carrying amount of the Company’s asset retirement obligations were as follows:

	2021		2020
Beginning balance as of January 1,	$	1,571.3	$	1,384.1
Additions	361.9		94.2
Accretion expense	108.5		90.8
Revisions in estimates (1)	(30.3)		8.3
Settlements	(8.4)		(6.1)
Balance as of December 31,	$	2,003.0	$	1,571.3

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(1)Revisions in estimates include decreases to the liability of $62.0 million and $42.1 million related to foreign currency translation for the years ended December 31, 2021 and 2020, respectively.