Balance Sheet Accounts and Supplemental Disclosures (Tables)

6 Months Ended

12 Months Ended

May 31, 2013

Nov. 30, 2012

Schedule of Fair Value of Financial Instruments

The following are measured at fair value:

	Total		Fair value measurement at May 31, 2013
			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	612.2	$	612.2	$	—	$	—

	Total		Fair value measurement at November 30, 2012
			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	166.0	$	166.0	$	—	$	—

Summary of Cash and Cash Equivalents and Grantor Trust by Investment Type

As of May 31, 2013, a summary of cash and cash equivalents and the grantor trust by investment type is as follows:

	Total		Cash and Cash Equivalents		Money Market Funds
	(In millions)
Cash and cash equivalents	$	134.6	$	5.4	$	129.2
Restricted cash(1)		470.0		—		470.0
Grantor trust (included as a component of other current and noncurrent assets)		13.0		—		13.0
	$	617.6	$	5.4	$	612.2

(1) As of May 31, 2013, the Company designated $470.0 million as restricted cash related to the cash collateralization of the 7.125% Second-Priority Senior Secured Notes due 2021 (the “7¹/₈% Notes”) issued in January 2013 and related interest costs. See Note 6 for additional information.

As of November 30, 2012, a summary of cash and cash equivalents and grantor trust by investment type is as follows:

	Total		Cash and Cash Equivalents		Money Market Funds
	(In millions)
Cash and cash equivalents	$	162.1	$	9.7	$	152.4
Grantor trust		13.6		—		13.6
	$	175.7	$	9.7	$	166.0

Estimated Fair Value and Principal Amount of Long-Term Debt

The estimated fair value and principal amount for the Company’s outstanding debt is presented below:

	Fair Value				Principal Amount
	May 31, 2013		November 30, 2012		May 31, 2013		November 30, 2012
	(In millions)
Term loan	$	46.3	$	47.5	$	46.3	$	47.5
71/8%  Notes		489.9		—		460.0		—
41/16%  Debentures		318.5		246.0		200.0		200.0
Other debt		1.1		1.2		1.1		1.2
	$	855.8	$	294.7	$	707.4	$	248.7

The estimated fair value and principal amount for the Company’s long-term debt is presented below:

	Fair Value				Principal Amount
	November 30, 2012		November 30, 2011		November 30, 2012		November 30, 2011
	(In millions)
Term loan	$	47.5	$	49.5	$	47.5	$	50.0
91/2% Senior Subordinated Notes (“91/2% Notes”)		—		75.1		—		75.0
41/16%  Convertible Subordinated Debentures (“41/16% Debentures”)		246.0		184.0		200.0		200.0
Other debt		1.2		1.4		1.2		1.4
	$	294.7	$	310.0	$	248.7	$	326.4

Schedule of Accounts Receivable

b. Accounts Receivable

	May 31, 2013		November 30, 2012
	(In millions)
Billed	$	74.1	$	49.4
Unbilled		67.2		62.0
Total receivables under long-term contracts		141.3		111.4
Other receivables		0.7		0.1
Accounts receivable	$	142.0	$	111.5

a. Accounts Receivable

	As of November 30,
	2012		2011
	(In millions)
Billed	$	49.4	$	58.1
Unbilled		62.0		48.8
Total receivables under long-term contracts		111.4		106.9
Other receivables		0.1		0.1
Accounts receivable	$	111.5	$	107.0

Components of Inventories

c. Inventories

	May 31, 2013			November 30, 2012
	(In millions)
Long-term contracts at average cost	$	267.4		$	256.4
Progress payments		(208.5	)		(209.9	)
Total long-term contract inventories		58.9			46.5
Work in progress		0.3			0.4
Total other inventories		0.3			0.4
Inventories	$	59.2		$	46.9

b. Inventories

	As of November 30,
	2012			2011
	(In millions)
Long-term contracts at average cost	$	256.4		$	262.4
Progress payments		(209.9	)		(213.1	)
Total long-term contract inventories		46.5			49.3
Work in progress		0.4			0.2
Total other inventories		0.4			0.2
Inventories	$	46.9		$	49.5

Schedule of Property, Plant and Equipment

d. Property, Plant and Equipment, net

	May 31, 2013			November 30, 2012
	(In millions)
Land	$	29.6		$	29.6
Buildings and improvements		159.8			158.5
Machinery and equipment		348.0			343.5
Construction-in-progress including capitalized enterprise resource planning expenditures of $40.4 million and $23.4 million as of May 31, 2013 and November 30, 2012, respectively		52.2			36.9
		589.6			568.5
Less: accumulated depreciation		(433.7	)		(424.6	)
Property, plant and equipment, net	$	155.9		$	143.9

c. Property, Plant and Equipment, net

	As of November 30,
	2012			2011
	(In millions)
Land	$	29.6		$	32.8
Buildings and improvements		158.5			153.9
Machinery and equipment		343.5			349.0
Construction-in-progress		36.9			17.4
		568.5			553.1
Less: accumulated depreciation		(424.6	)		(426.2	)
Property, plant and equipment, net	$	143.9		$	126.9

Schedule of Other Noncurrent Assets, Net

e. Other Noncurrent Assets, net

	May 31, 2013		November 30, 2012
	(In millions)
Deferred financing costs	$	19.8	$	7.0
Recoverable from the U.S. government for conditional asset retirement obligations		14.6		13.8
Grantor trust		11.8		12.1
Other		16.3		18.2
Other noncurrent assets, net	$	62.5	$	51.1

e. Other Noncurrent Assets, net

	As of November 30,
	2012		2011
	(In millions)
Grantor trust	$	12.1	$	13.3
Recoverable from the U.S. government for conditional asset retirement obligations		13.8		12.3
Deferred financing costs		7.0		8.4
Other		18.2		23.7
Other noncurrent assets, net	$	51.1	$	57.7

Schedule of Other Current Liabilities

f. Other Current Liabilities

	May 31, 2013		November 30, 2012
	(In millions)
Accrued compensation and employee benefits	$	57.9	$	49.6
Interest payable		13.0		6.3
Contract loss provisions		5.0		5.7
Legal settlements		2.6		7.0
Other		47.8		34.7
Other current liabilities	$	126.3	$	103.3

 f. Other Current Liabilities

	As of November 30,
	2012		2011
	(In millions)
Accrued compensation and employee benefits	$	49.6	$	44.0
Legal settlements		7.0		10.7
Interest payable		6.3		7.9
Contract loss provisions		5.7		4.7
Other		34.7		36.8
Other current liabilities	$	103.3	$	104.1

Schedule of Other Noncurrent Liabilities

g. Other Noncurrent Liabilities

	May 31, 2013		November 30, 2012
	(In millions)
Conditional asset retirement obligations	$	21.4	$	20.8
Pension benefits, non-qualified		18.7		18.9
Deferred compensation		9.1		8.4
Deferred revenue		8.3		8.6
Legal settlements		0.3		2.3
Other		9.6		9.5
Other noncurrent liabilities	$	67.4	$	68.5

 g. Other Noncurrent Liabilities

	As of November 30,
	2012		2011
	(In millions)
Legal settlements	$	2.3	$	8.3
Conditional asset retirement obligations		20.8		17.8
Deferred revenue		8.6		9.2
Deferred compensation		8.4		7.8
Pension benefits, non-qualified		18.9		16.1
Other		9.5		4.9
Other noncurrent liabilities	$	68.5	$	64.1

Schedule of Accumulated Other Comprehensive Loss, Net of Income Taxes

h. Accumulated Other Comprehensive Loss, Net of Income Taxes

	May 31, 2013			November 30, 2012
	(In millions)
Actuarial losses, net	$	(444.8	)	$	(491.0	)
Prior service credits		4.3			4.7
Accumulated other comprehensive loss, net of income taxes	$	(440.5	)	$	(486.3	)

h. Accumulated Other Comprehensive Loss, Net of Income Taxes

The components of accumulated other comprehensive loss, net of income taxes, related to the Company’s retirement benefit plans are as follows:

	As of November 30,
	2012			2011			2010
	(In millions)
Actuarial losses, net	$	(491.0	)	$	(304.2	)	$	(285.9	)
Prior service credits, net		4.7			4.8			4.7
Accumulated other comprehensive loss	$	(486.3	)	$	(299.4	)	$	(281.2	)

Schedule of Intangible Assets

d. Intangible Assets

As of November 30, 2012	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(In millions)
Customer related	$	10.7	$	5.4	$	5.3
Acquired technology		18.3		9.7		8.6
Intangible assets	$	29.0	$	15.1	$	13.9

As of November 30, 2011	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(In millions)
Customer related	$	10.7	$	4.6	$	6.1
Acquired technology		18.3		9.0		9.3
Intangible assets	$	29.0	$	13.6	$	15.4

Estimated Amounts that Will be Amortized from Accumulated Other Comprehensive Loss

The estimated amounts that will be amortized from accumulated other comprehensive loss into net periodic benefit expense in fiscal 2013 are as follows:

	Pension Benefits		Medical and Life Benefits
	(In millions)
Recognized actuarial losses (gains), net	$	94.7	$	(2.1	)
Recognition of prior service credits, net		—		(0.9	)
	$	94.7	$	(3.0	)