Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Feb. 28, 2014	Nov. 30, 2013
Current Assets
Cash and cash equivalents	$ 144.1	$ 197.6
Accounts receivable	199.2	214.1
Inventories	139.2	105.9
Recoverable from the U.S. government and other third parties for environmental remediation costs	22.4	20.4
Receivable from Northrop Grumman Corporation ("Northrop")	6.0	6.0
Other receivables, prepaid expenses and other	22.5	22.4
Income taxes	5.8	12.6
Deferred income taxes	18.6	17.0
Total Current Assets	557.8	596.0
Noncurrent Assets
Property, plant and equipment, net	372.7	374.7
Real estate held for entitlement and leasing	81.2	80.2
Recoverable from the U.S. government and other third parties for environmental remediation costs	86.5	88.7
Receivable from Northrop	72.3	72.0
Deferred income taxes	175.9	175.7
Goodwill	159.4	159.6
Intangible assets	132.3	135.7
Other noncurrent assets, net	76.5	72.7
Total Noncurrent Assets	1,156.8	1,159.3
Total Assets	1,714.6	1,755.3
Current Liabilities
Short-term borrowings and current portion of long-term debt	3.0	2.9
Accounts payable	98.0	122.5
Reserves for environmental remediation costs	38.0	36.6
Postretirement medical and life insurance benefits	7.2	7.3
Advance payments on contracts	95.2	104.4
Other current liabilities	212.1	206.0
Total Current Liabilities	453.5	479.7
Noncurrent Liabilities
Senior debt	41.9	42.5
Second-priority senior notes	460.0	460.0
Convertible subordinated notes	188.7	193.2
Other debt	0.5	0.6
Reserves for environmental remediation costs	132.4	134.7
Pension benefits	257.2	261.7
Postretirement medical and life insurance benefits	58.5	59.3
Other noncurrent liabilities	74.1	73.8
Total Noncurrent Liabilities	1,213.3	1,225.8
Total Liabilities	1,666.8	1,705.5
Commitments and contingencies (Note 8)
Redeemable common stock, par value of $0.10; less than 0.1 million shares issued and outstanding as of February 28, 2014 and November 30, 2013	0.1	0.2
Shareholders' Equity
Preference stock, par value of $1.00; 15.0 million shares authorized; none issued or outstanding
Common stock, par value of $0.10; 150.0 million shares authorized; 59.7 million shares issued and outstanding as of February 28, 2014; 59.9 million shares issued and outstanding as of November 30, 2013	5.9	5.9
Other capital	281.4	280.1
Treasury stock at cost, 0.5 million shares as of February 28, 2014	(8.6)
Accumulated deficit	(16.1)	(14.0)
Accumulated other comprehensive loss, net of income taxes	(214.9)	(222.4)
Total Shareholders' Equity	47.7	49.6
Total Liabilities, Redeemable Common Stock and Shareholders' Equity	$ 1,714.6	$ 1,755.3