Income Taxes (Rate Change) (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended	9 Months Ended
Mar. 31, 2018	Mar. 31, 2018	Dec. 21, 2017	Mar. 31, 2018
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Effective federal statutory income tax rate change in amount		$ 0.3		$ 1.6
Effective federal statutory income tax rate	21.00%		35.00%

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration