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Goodwill and Identifiable Intangibles (Identifiable Intangibles) (Details) - USD ($) $ in Millions		3 Months Ended
	Jan. 31, 2019	Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Impairment of indefinite-lived intangible assets		$ 0.0
Trade names | Cumberland Asset Acquisition
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	10 years
Customer relationships | Cumberland Asset Acquisition
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	7 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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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.

+ References

No definition available.

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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