COMMITMENTS AND CONTINGENCIES 6 (Details) - Bendix Asbestos Loss Contingency Liability [Member] - claim	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loss Contingency Disease Distribution Of Unresolved Claims [Line Items]
Mesothelioma and other cancer claims	3,968	3,422	3,399
Nonmalignant claims	2,692	2,820	3,081
Total claims	6,660	6,242	6,480	6,209

Number of pending claims pertaining to a loss contingency.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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