COMMITMENTS AND CONTINGENT LIABILITIES - Guarantees of our Consolidated Subsidiaries (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Guarantor Obligations
Guarantor obligations, maximum exposure, undiscounted	$ 1,289.7	$ 1,458.8
Financial guarantees
Guarantor Obligations
Guarantor obligations, maximum exposure, undiscounted	177.5	104.9
Performance guarantees
Guarantor Obligations
Guarantor obligations, maximum exposure, undiscounted	$ 1,112.2	$ 1,353.9

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant