Retirement Plans (Tables)

12 Months Ended

Sep. 30, 2012

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

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,
	2012		2011
	(in millions)
Projected benefit obligations	$	445.2	$	377.3
Accumulated benefit obligations	445.0		375.3
Fair value of plan assets	383.2		326.8

Information for Pension Plans with accumulated benefit obligations less than plan assets is presented below.

	September 30,
	2012		2011
	(in millions)
Projected benefit obligations	$	3.1	$	4.0
Accumulated benefit obligations	3.1		4.0
Fair value of plan assets	3.9		5.0

Schedule of Net Benefit Costs

The components of net periodic benefit cost (gain) are presented below.

	Pension Plans
	2012			2011			2010
	(in millions)
Service cost	$	1.8		$	2.5		$	3.6
Interest cost	20.2			21.2			21.1
Expected return on plan assets	(24.0		)	(23.4		)	(21.7		)
Amortization of prior service cost (gain)	0.6			0.6			0.7
Amortization of net loss (gain)	6.0			5.9			8.8
Curtailment / special settlement loss (gain)	0.2			0.7			3.0
Costs allocated to discontinued operations	(1.1		)	(4.3		)	(9.7		)
Net periodic benefit cost (gain)	$	3.7		$	3.2		$	5.8

Schedule Of Defined Benefit Plans Disclosures

Amounts recognized for our Pension Plans and other postretirement benefit plans are presented below.

	Pension Plans						Other Plans
	2012			2011			2012			2011
	(in millions)
Projected benefit obligations:
Beginning of year	$	381.3		$	398.9		$	3.7		$	6.7
Service cost	1.8			2.5			—			0.1
Interest cost	20.2			21.2			0.2			0.3
Plan amendment	—			—			(1.4		)	—
Actuarial loss (gain)	71.6			(12.4		)	(0.1		)	(1.0		)
Benefits paid	(24.7		)	(24.2		)	(0.6		)	(0.5		)
Currency translation	0.6			(0.1		)	—			—
Decrease in obligation due to curtailment	(2.8		)	(4.6		)	—			(1.9		)
Other	0.3			—			—			—
End of year	$	448.3		$	381.3		$	1.8		$	3.7
Accumulated benefit obligations at end of year	$	448.1		$	379.3		$	1.8		$	3.7
Plan assets:
Beginning of year	$	331.8		$	313.1		$	—		$	—
Actual return on plan assets	58.2			19.6			—			—
Employer contributions	21.3			23.3			0.6			0.5
Currency translation	0.5			—			—			—
Benefits paid	(24.7		)	(24.2		)	(0.6		)	(0.5		)
End of year	$	387.1		$	331.8		$	—		$	—
Accrued benefit cost at end of year:
Unfunded status	$	(61.2	)	$	(49.5	)	$	(1.8	)	$	(3.7	)
Recognized on balance sheet:
Other noncurrent assets	$	0.9		$	1.0		$	—		$	—
Other current liabilities	—			(0.3		)	(0.2		)	(0.5		)
Other noncurrent liabilities	(62.1		)	(50.2		)	(1.6		)	(3.2		)
	$	(61.2	)	$	(49.5	)	$	(1.8	)	$	(3.7	)
Recognized in accumulated other comprehensive loss, before tax:
Prior year service cost (gain)	$	0.3		$	0.7		$	(0.5	)	$	(3.8	)
Net actuarial loss (gain)	136.9			108.2			(4.6		)	(13.4		)
	$	137.2		$	108.9		$	(5.1	)	$	(17.2	)

Schedule of Pension and Other Postretirement Benefits Activity in Accumulated Other Comprehensive Income (Loss)

Pension and other postretirement benefits activity in accumulated other comprehensive loss, before tax, in 2012 is presented below.

	Pension benefits			Other postretirement benefits
	(in millions)
Balance at beginning of year	$	108.9		$	(17.2	)
Amounts reclassified as amortization of net periodic cost:
Gain (loss) amortization	(8.8		)	9.0
Prior year service gain (loss) amortization and curtailment	(0.6		)	4.6
Net prior service costs	0.1			(1.4		)
Loss (gain) during the year	37.5			(0.1		)
Other	0.1			—
Balance at end of year	$	137.2		$	(5.1	)

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 and other postretirement benefits that management expects to be amortized into net periodic benefit cost in 2013, including both continuing and discontinued operations, are presented below.

	Pension benefits			Other postretirement benefits
	(in millions)
Amortization of unrecognized prior year service cost (credit)	$	—		$	(0.4	)
Amortization of unrecognized gain (loss)	(9.0		)	(4.2		)
	$	(9.0	)	$	(4.6	)

Schedule of Assumptions Used

A summary of key assumptions for our pension and other postretirement benefit plans is below.

	Plan measurement date
	Pension Plans						Other Plans
	2012		2011		2010		2012		2011		2010
Weighted average used to determine benefit obligations:
Discount rate	4.21	%	5.66	%	5.44	%	4.22	%	5.69	%	5.44	%
Rate of compensation increases	3.50	%	3.50	%	3.50	%	n/a		n/a		n/a
Weighted average used to determine net periodic cost:
Discount rate	5.66	%	5.88	%	5.45	%	5.69	%	5.88	%	5.45	%
Expected return on plan assets	6.95	%	7.47	%	7.88	%	n/a		n/a		n/a
Rate of compensation increases	3.50	%	3.50	%	3.50	%	n/a		n/a		n/a
Assumed healthcare cost trend rates:
Next year – pre-65	n/a		n/a		n/a		n/a		7.50	%	7.90	%
Ultimate trend rate – pre-65	n/a		n/a		n/a		n/a		5.00	%	4.90	%
Year ultimate trend rate achieved	n/a		n/a		n/a		n/a		2016		2016

Schedule of Effect of One-Percentage-Point Change in Assumptions

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)
Pension Plans:
Discount rate:
Effect on pension service and interest cost components	$	(0.3	)	$	0.4
Effect on pension benefit obligations	(48.0		)	58.7
Effect on 2013 pension expense	(2.7		)	3.2
Expected return on plan assets:
Effect on current year pension expense	(3.7		)	3.8
Rate of compensation increase:
Effect on pension benefit obligations	0.1			—
Effect on 2013 pension expense	0.1			—
Other plans:
Discount rate:
Effect on postretirement service and interest cost components	—			—
Effect on postretirement benefit obligations	(0.3		)	0.4

Schedule of Strategic Allocation of Plan Assets

This trust's strategic asset allocations, tactical range at September 30, 2012 and actual asset allocations at September 30, 2012, 2011 and 2010, respectively, are presented below.

	Strategic asset allocation			Actual asset allocations at
			Tactical   range	September 30,
				2012		2011		2010
Equity investments:
Large capitalization stocks	38	%	19-57%
Small capitalization stocks	8	%	4-12%
International stocks	14	%	7-21%
	60	%	50-70%	59	%	46	%	58	%
Fixed income investments	40	%	30-50%	39	%	53	%	39	%
Cash	—	%	0-5%	2	%	1	%	3	%
	100	%		100	%	100	%	100	%

Schedule of Strategic Allocation of Plan Assets

The assets of the Pension Plans at September 30, 2012 and 2011, by level within the fair value hierarchy, are presented below, in millions.

	September 30, 2012
	Level 1		Level 2		Level 3		Total
	(in millions)
Equity:
International Funds	$	—	$	10.6	$	—	$	10.6
Large Cap Growth funds	—		15.6		—		15.6
Large Cap Value funds	—		30.4		—		30.4
S&P Midcap index funds	—		5.2		—		5.2
Smallcap index funds	—		31.1		—		31.1
Mutual funds	134.4		—		—		134.4
Total equity	134.4		92.9		—		227.3
Bond funds	—		151.3		—		151.3
Cash and cash equivalents	0.2		6.8		—		7.0
Other	—		—		1.5		1.5
Total	$	134.6	$	251.0	$	1.5	$	387.1

	September 30, 2011
	Level 1		Level 2		Level 3		Total
	(in millions)
Equity:
Large cap growth funds	$	—	$	7.5	$	—	$	7.5
Large cap value funds	—		7.3		—		7.3
S&P Midcap index funds	—		2.2		—		2.2
Mutual funds	137.1		—		—		137.1
Total equity	137.1		17.0		—		154.1
Bond funds	—		172.7		—		172.7
Cash	0.2		3.3		—		3.5
Other	—		—		1.5		1.5
Total	$	137.3	$	193.0	$	1.5	$	331.8

Schedule of Expected Benefit Payments

The estimated benefit payments, which reflect expected future service, as appropriate, are presented below.

	Pension benefits		Other Plans
	(in millions)
2013	$	26.6	$	0.2
2014	26.6		0.1
2015	26.5		0.1
2016	26.5		0.1
2017	26.7		0.1
2018-2022	136.4		0.5