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Retirement Plans (Tables)
 12 Months Ended
Sep. 30, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
Schedule of Net Periodic Benefit Cost
The components of net periodic benefit cost are presented below.
 
2014
 
2013
 
2012
 
(in millions)
Service cost
$
1.7

 
$
2.0

 
$
1.8

Interest cost
19.9

 
18.3

 
20.2

Expected return on plan assets
(23.8
)
 
(25.1
)
 
(24.0
)
Amortization of prior service cost
—

 
—

 
0.6

Amortization of net loss
3.5

 
9.0

 
6.0

Curtailment / special settlement loss
0.1

 
0.1

 
0.2

Costs allocated to discontinued operations
—

 
—

 
(1.1
)
Other
0.1

 
—

 
—

Net periodic benefit cost
$
1.5

 
$
4.3

 
$
3.7
Schedule of Accumulated and Projected Benefit Obligations
information for Pension Plans with accumulated benefit obligations in excess of plan assets is presented below.
 
September 30,
 
2014
 
2013
 
(in millions)
Projected benefit obligations
$
459.9

 
$
390.4

Accumulated benefit obligations
459.9

 
390.4

Fair value of plan assets
407.6

 
384.8

Balance sheet information for Pension Plans with accumulated benefit obligations less than plan assets is presented below.
 
September 30,
 
2014
 
2013
 
(in millions)
Projected benefit obligations
$
1.6

 
$
9.2

Accumulated benefit obligations
1.6

 
9.1

Fair value of plan assets
2.9

 
10.4
Schedule Of Defined Benefit Plans Disclosures
Amounts recognized for our Pension Plans and other postretirement benefit plans are presented below.
 
Pension Plans
 
Other Plans
 
2014
 
2013
 
2013
 
(in millions)
Projected benefit obligations:
 
 
 
 
 
Beginning of year
$
399.6

 
$
448.3

 
$
0.2

Service cost
1.7

 
2.0

 
—

Interest cost
19.9

 
18.3

 
—

Actuarial loss (gain)
67.3

 
(42.5
)
 
—

Benefits paid
(26.0
)
 
(26.0
)
 
(0.2
)
Currency translation
(0.8
)
 
(0.5
)
 
—

Decrease in obligation due to curtailment
(0.2
)
 
—

 
—

End of year
$
461.5

 
$
399.6

 
$
—

Accumulated benefit obligations at end of year
$
461.5

 
$
399.5

 
$
—

Plan assets:
 
 
 
 
 
Beginning of year
$
395.2

 
$
387.1

 
$
—

Actual return on plan assets
42.1

 
34.4

 
—

Employer contributions
0.1

 
0.2

 
0.2

Currency translation
(0.9
)
 
(0.5
)
 
—

Benefits paid
(26.0
)
 
(26.0
)
 
(0.2
)
End of year
$
410.5

 
$
395.2

 
$
—

Accrued benefit cost at end of year:
 
 
 
 
 
Unfunded status
$
(51.0
)
 
$
(4.4
)
 
$
—

Recognized on balance sheet:
 
 
 
 
 
Other noncurrent assets
$
1.3

 
$
1.3

 
$
—

Other noncurrent liabilities
(52.3
)
 
(5.7
)
 
—

 
$
(51.0
)
 
$
(4.4
)
 
$
—

Recognized in accumulated other comprehensive loss, before tax:
 
 
 
 
 
Prior year service cost
$
0.1

 
$
0.2

 
$
—

Net actuarial loss
119.7

 
74.5

 
—

 
$
119.8

 
$
74.7

 
$
—
Schedule of Pension and Other Postretirement Benefits Activity in Accumulated Other Comprehensive Income (Loss)
Pension Plan activity in accumulated other comprehensive loss, before tax, in 2014 is presented below, in millions.
Balance at beginning of year
$
74.7

Actuarial gain
48.9

Prior year service loss amortization to net periodic cost
(3.5
)
Other
(0.3
)
Balance at end of year
$
119.8
Schedule of Components of Accumulated Other Comprehensive Income (Loss) Related to Pension and Other Postretirement Benefits Expected to be Amortized
The components of accumulated other comprehensive loss related to pension that we expect to amortize into net periodic benefit cost in 2015 are presented below, in millions.
Amortization of unrecognized prior year service cost
$
—

Amortization of unrecognized loss
3.2

 
$
3.2
Schedule of Assumptions Used
A summary of key assumptions for our pension and other postretirement benefit plans is below.
 
Pension Plans
 
Other Plans
 
2014
 
2013
 
2012
 
2013
 
2012
Weighted average used to determine benefit obligations:
 
 
 
 
 
 
 
 
 
Discount rate
4.49
%
 
5.16
%
 
4.21
%
 
n/a
 
4.22
%
Rate of compensation increases
3.50

 
3.50

 
3.50

 
n/a
 
n/a
Weighted average used to determine net periodic cost:
 
 
 
 
 
 
 
 
 
Discount rate
5.16
%
 
4.21
%
 
5.66
%
 
n/a
 
5.69
%
Expected return on plan assets
6.24

 
6.71

 
6.95

 
n/a
 
n/a
Rate of compensation increases
3.50

 
3.50

 
3.50

 
n/a
 
n/a
Schedule of Effect of One-Percentage-Point Change in Assumptions
Assumed discount rates, expected return on plan assets and salary increases affect the amounts reported for the Pension Plans. The effects of a one-percentage-point change in the trend rate for these assumptions are below.
 
1 Percentage
  point increase 
 
1 Percentage
  point decrease
 
(in millions)
Discount rate:
 
 
 
Effect on pension service and interest costs
$
(0.1
)
 
$
0.7

Effect on pension benefit obligations
(50.3
)
 
61.8

Effect on 2015 service and interest costs
(0.5
)
 
0.5

Expected return on plan assets:
 
 
 
Effect on 2015 service and interest costs
(4.0
)
 
4.0
Schedule of Strategic Allocation of Plan Assets [Table Text Block]
We maintain a single trust to hold the assets of the U.S. pension plan. During 2013, the strategic asset allocation was adjusted to 40% equity investments from 60% equity investments. This trust's strategic asset allocations, tactical range at September 30, 2014 and actual asset allocations are presented below.
 
Strategic asset allocation
 
 
 
 
 
Actual asset allocations at
 
 
 
 
 
 
September 30,
 
Tactical range
2014
 
2013
 
2012
Equity investments:
 
 
 
 
 
 
 
 
 
 
 
Large capitalization stocks
26
%
 

 
 
 
 
 
 
 
 
Small capitalization stocks
5

 

 
 
 
 
 
 
 
 
International stocks
9

 

 
 
 
 
 
 
 
 
 
40

 
30
-
50%
 
40
%
 
40
%
 
59
%
Fixed income investments
60

 
50
-
70
 
59

 
59

 
39

Cash
—

 
0
-
5
 
1

 
1

 
2

 
100
%
 
 
 
 
 
100
%
 
100
%
 
100
%
Schedule of Allocation of Plan Assets
The assets of the Pension Plans by level within the fair value hierarchy are presented below.
 
September 30, 2014
 
Level 1
 
Level 2
 
Total
 
(in millions)
Equity:
 
 
 
 
 
Large cap stocks:
 
 
 
 
 
Large cap growth funds
$
—

 
$
31.5

 
$
31.5

Large cap index funds
—

 
35.9

 
35.9

Large cap value funds
—

 
15.3

 
15.3

Small cap stocks:
 
 
 
 
 
  Small cap growth funds
—

 
18.5

 
18.5

International stocks:
 
 
 
 
 
Mutual funds
45.9

 
—

 
45.9

International funds
—

 
15.4

 
15.4

      Total equity
45.9

 
116.6

 
162.5

Fixed income
—

 
243.5

 
243.5

Cash and cash equivalents
4.5

 
—

 
4.5

 
$
50.4

 
$
360.1

 
$
410.5

 
September 30, 2013
 
Level 1
 
Level 2
 
Total
 
(in millions)
Equity:
 
 
 
 
 
Large cap stocks:
 
 
 
 
 
Large cap growth funds
$
—

 
$
31.7

 
$
31.7

Large cap index funds
—

 
26.1

 
26.1

Large cap value funds
—

 
16.3

 
16.3

Large cap growth mutual funds
16.1

 
—

 
16.1

Small cap stocks:
 
 
 
 
 
Small cap growth funds
—

 
23.5

 
23.5

International stocks:
 
 
 
 
 
Mutual funds
31.5

 
—

 
31.5

International funds
—

 
15.7

 
15.7

Total equity
47.6

 
113.3

 
160.9

Fixed income
—

 
229.8

 
229.8

Cash and cash equivalents
4.5

 
—

 
4.5

 
$
52.1

 
$
343.1

 
$
395.2
Schedule of Expected Benefit Payments
Our estimated future pension benefit payments are presented below in millions.
2015
$
27.6

2016
26.8

2017
27.0

2018
27.3

2019
27.5

2020-2024
141.0