STOCKHOLDERS' EQUITY - Settlement Gains on Pension and Post-retirement Benefits Included in AOCI (Details) $ in Millions	Feb. 23, 2020 USD ($)
STOCKHOLDERS' EQUITY
Net amount of settlement losses on pension and post-retirement benefits included in AOCI to be amortized over the next 12 months, before tax	$ (0.7)
Net amount of settlement losses on pension and post-retirement benefits included in AOCI to be amortized over the next 12 months, after tax	$ (0.5)

Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (s)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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