FAIR VALUE MEASUREMENTS - Hedging Contracts (Details) - USD ($) $ in Millions	2 Months Ended	7 Months Ended
Feb. 28, 2017	Sep. 30, 2017
Hedging Contracts, net
Balance, beginning of the period		$ 3.1
Total gains/(losses) (realized or unrealized):
Included in earnings		(1.3)
Included in other comprehensive income		0.0
Purchases, sales, issuances and settlements		1.0
Transfers in and out of Level 3		0.0
Balance, end of the period	$ 3.1	2.8
The amount of total gains/(losses) for the period included in earnings (derivative income) attributable to the change in unrealized gain/(losses) relating to derivatives still held at September 30, 2017		$ (1.7)
Predecessor
Hedging Contracts, net
Balance, beginning of the period	0.0
Total gains/(losses) (realized or unrealized):
Included in earnings	(0.6)
Included in other comprehensive income	0.0
Purchases, sales, issuances and settlements	3.7
Transfers in and out of Level 3	$ 0.0

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- Definition

Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
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- Definition

Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Amount of increase (decrease) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Section 50
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Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Section 50
-Paragraph 2
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- Definition

Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

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No definition available.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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