Share Based Compensation (Tables)

12 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Share-based compensation award cost recognized in the consolidated income statement is summarized below:

	Year Ended September 30, 2017
(In millions)
Before-Tax Share-Based Compensation Award Cost	$	8.3
Income Tax Benefit	2.9
After-Tax Share-Based Compensation Award Cost	$	5.4

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

Total before-tax share-based compensation award cost by type of program was as follows:

	Year Ended September 30, 2017
(In millions)
Restricted stock units	$	7.5
Stock options	0.2
Director awards	0.6
Before-Tax Share-Based Compensation Cost	$	8.3

Schedule of Assumptions Used

Assumptions used in determining the benefit obligation and net periodic pension cost for the year ended September 30, 2017 are presented in the following table as weighted-averages:

	2017
(In millions)
Benefit obligations:
Discount rate	3.2	%
Rate of compensation increase	4.1	%
Net Periodic Pension Cost:
Discount rate	2.3	%
Rate of compensation increase	4.9	%
Expected rate of return on plan	2.0	%

The calculation of the fair value of market-based restricted stock units during the three months ended December 31, 2016 used the following assumptions:

(In percentages)
Expected volatility	28.7	%
Risk-free interest rate	1.4	%

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

A summary of restricted stock unit activity is presented below:

	Shares		Weighted Average Grant-Date Fair Value
(In millions, except weighted average)
Outstanding, September 30, 2016	—		$	—
Converted on October 1, 2016	0.5		22.85
Granted	0.7		25.30
Paid out	(0.1	)	15.55
Forfeited/adjustments	—		—
Outstanding, September 30, 2017	1.1		$	25.30

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activity is presented below:

	Shares	Weighted Average Exercise Price
(In millions, except weighted average)
Outstanding, September 30, 2016	—	$	—
Converted on October 1, 2016	0.5	18.37
Granted	—	—
Exercised	—	—
Forfeited	—	—
Outstanding, September 30, 2017	0.5	$	18.55

	Weighted Average Remaining Contractual Terms (In years)	Aggregate Intrinsic Value
(In millions, except years)
Outstanding, September 30, 2017	5.6	$	9.6
Exercisable, September 30, 2017	5.6	9.3