OTHER ITEMS IMPACTING COMPARABILITY - Schedule of Other Items Impacting Comparability (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring and other, net	$ 10,302	$ 2,577	$ 24,556	$ 5,605
ERP implementation costs	0	5,090	0	12,721
Restructuring and other items, net	10,302	7,667	24,556	18,326
Gains on sale of properties	(22,998)	(35,263)	(23,584)	(36,768)
ChoiceLease liability insurance revenue	0	0	0	(777)
Other items impacting comparability, net	(32,776)	(27,596)	(27,399)	(19,219)
U.K.
Restructuring Cost and Reserve [Line Items]
Gains on sale of properties	$ (20,080)	$ 0	$ (28,371)	$ 0

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2443-110228

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration