Summary of Significant Accounting Policies, (As Restated for fiscal 2014 and 2013) (Tables)

12 Months Ended

Nov. 30, 2015

Change in Accounting Estimate [Line Items]

Schedule of Fair Value of Financial Instruments

The following are measured at fair value:

			Fair value measurement at November 30, 2015
	Total		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	$	187.2	$	187.2	$	—	$	—
			Fair value measurement at November 30, 2014
	Total		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	$	233.4	$	233.4	$	—	$	—

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

As of November 30, 2015, 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	$	211.1	$	33.8	$	177.3
Grantor trust (included as a component of other current and noncurrent assets)	9.9		—		9.9
	$	221.0	$	33.8	$	187.2

Schedule of Estimated Fair Value and Principal Amount of Outstanding Debt

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

	Fair Value				Principal Amount
	November 30, 2015		November 30, 2014		November 30, 2015		November 30, 2014
	(In millions)
Term loan	$	93.8	$	98.8	$	93.8	$	98.8
7.125% Second-Priority Senior Secured Notes (“7 1/8% Notes”)	480.1		483.6		460.0		460.0
4 1/16% Convertible Subordinated Debentures (“4 1/16% Debentures”)	164.0		248.2		84.6		133.6
Delayed draw term loan	13.0		89.0		13.0		89.0
Other debt	0.6		0.8		0.6		0.8
	$	751.5	$	920.4	$	652.0	$	782.2

Schedule of Useful Lives of Property, Plant and Equipment

Depreciation is computed principally by accelerated methods based on the following useful lives:

Buildings and improvements	9 - 40  years
Machinery and equipment	5 - 19  years

Schedule of Changes in Carrying Amount of Conditional Asset Retirement Obligations

The changes in the carrying amount of CAROs since November 30, 2012 were as follows (in millions):

Balance as of November 30, 2012	$	20.8
Rocketdyne Business Acquisition	1.2
Additions and other, net	(0.6		)
Accretion	1.5
Balance as of November 30, 2013	22.9
Additions and other, net	(0.2		)
Accretion	1.7
Balance as of November 30, 2014	24.4
Additions and other, net	3.0
Accretion	1.9
Balance as of November 30, 2015	$	29.3

Schedule of Sales to U.S. Government and its Agencies

Sales to the U.S. government and its agencies, including sales to the Company’s significant customers discussed below, were as follows (dollars in millions):

	U.S. Government Sales		Percentage of Net Sales
Fiscal 2015	$	1,529.2	90	%
Fiscal 2014	1,478.6		92	%
Fiscal 2013	1,305.9		95	%

Schedule of Customers that Represented More than 10% of Net Sales

Customers that represented more than 10% of net sales for the fiscal years presented are as follows:

	Year Ended
	2015		2014		2013
Lockheed Martin Corporation ("Lockheed Martin")	29	%	28	%	23	%
Raytheon Company ("Raytheon")	20		17		33
United Launch Alliance ("ULA")	19		25		18
NASA	11		11		*

__________

* Less than 10%.

Customers that represented more than 10% of net sales for the periods presented are as follows:

	Year Ended
	2015		2014		2013
Lockheed Martin	29	%	28	%	23	%
Raytheon	20		17		33
ULA	19		25		18
NASA	11		11		*

________

 * Less than 10%

Schedule of Customers that Represented More than 10% of Accounts Receivable

Customers that represented more than 10% of accounts receivable for the periods presented are as follows:

	As of November 30,
	2015		2014
Lockheed Martin	31	%	21	%
ULA	23		31
Raytheon	18		22
NASA	11		*
Boeing	*		12

_____

* Less than 10%

Contracts Accounted for under Percentage-of-Completion [Member]

Change in Accounting Estimate [Line Items]

Summary of Impact of Contracts in Progress on Statement of Operations

The following table summarizes the impact from changes in estimates and assumptions on the statements of operations on contracts, representing 83% of the Company’s aerospace and defense segment net sales over the last three fiscal years, accounted for under the percentage-of-completion method of accounting:

	Year Ended
	2015		2014		2013
	(In millions, except per share amounts)
Favorable effect of the changes in contract estimates on loss from continuing operations before income taxes	$	41.2	$	9.2	$	23.2
Favorable effect of the changes in contract estimates on net (loss) income	24.7		5.5		13.6
Favorable effect of the changes in contract estimates on basic net (loss) income per share	0.40		0.10		0.22
Favorable effect of the changes in contract estimates on diluted net (loss) income per share	0.40		0.10		0.16