STOCK-BASED COMPENSATION - Schedule of Performance Cycles (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
3 year performance cycle, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
TSR Performance Relative to the Peer Group (1% Best)		63.00%
Payout as a Percent of the Base Award		49.00%
Number of Shares Distributed (less than) (in shares)		0.1
Cash Portion		$ 1.6
3 year performance cycle, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
TSR Performance Relative to the Peer Group (1% Best)	60.00%
Payout as a Percent of the Base Award	56.00%
Number of Shares Distributed (less than) (in shares)	0.1
Cash Portion	$ 2.0
2 year performance cycle, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout as a Percent of the Base Award		114.00%
Number of Shares Distributed (less than) (in shares)		0.1
Cash Portion		$ 4.1
3 year performance cycle, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout as a Percent of the Base Award	16.00%
Number of Shares Distributed (less than) (in shares)	0.1
Cash Portion	$ 0.4

performance cycle Payout as a percent of the base award.

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- Definition

Three year performance cycle total shareholder return performance relative to the peer group one percent equal to best.

+ References

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- Definition

Amount of cash paid to settle liability for award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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