Stock-Based Compensation And Incentive Performance Plans (Long-Term Incentive Plan) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reversal of previously accrued amounts	$ 1,867
Chief Executive Officer Succession Plan expense, net
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reversal of previously accrued amounts	$ 5,065
Long Term Incentive Plan 2016-2018 and 2017-2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	3 years
Conversion of common stock (in shares)		1
Long Term Incentive Plan 2016-2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	3 years
Reversal of previously accrued amounts	$ 6,482
Long Term Incentive Plan 2017-2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reversal of previously accrued amounts	$ 1,129