Defined Benefit Plan, Expected Return on Plan Assets, Major Asset Classes, Time Horizon

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- Definition

Percentage of Obligations Related to U.S. Plan

+ References

No definition available.

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- Definition

Percentage of total pension plan assets held by the Company's to U.S. pension plan.

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No definition available.

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

+ References

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
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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

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

+ References

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment.

+ References

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- Definition

Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract.

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- Definition

Description of defined benefit pension and other postretirement plans. Includes, but is not limited to, employee group covered, type of benefit formula, type of benefits, cost sharing arrangement, funding policy, type of assets held, significant nonbenefit liabilities and information pertaining to multiple employer plan.

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- Definition

Amount of cost for defined contribution plan.

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- Definition

Amount of payment for pension benefits. Excludes other postretirement benefits.

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Retirement Plans (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			$ 0.0	$ 16.6	$ 0.5
Defined Benefit Plan, Description	0.75
Defined Benefit Plan, Plan Assets, Payment for Settlement			58.5
Defined Benefit Plan, Plan Assets, Contributions by Employer			35.0	0.0	1.2
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment			$ 0.0	16.6	0.5
Percentage of Obligations Related to U.S. Plan			98.00%
Payment for Pension Benefits			$ 35.0	0.0	1.2
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage			100.00%
Defined Contribution Plan, Cost			$ 4.1	4.0	$ 4.2
Percentage of Assets Related to U.S. Plan			98.00%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Expected Return on Plan Assets Major Asset Classes Time Horizon			10
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Expected Return on Plan Assets Major Asset Classes Time Horizon			15
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement			$ 0.0	$ 58.5
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate			3.88%	3.68%	4.84%
Discount rate			3.68%	3.92%	4.49%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage			20.00%	30.00%	40.00%
Equity Securities [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage			15.00%
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Payment for Pension Benefits		$ 1.2