Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	May 31, 2012	Nov. 30, 2011
Current Assets
Cash and cash equivalents	$ 150.2	$ 188.0
Accounts receivable	107.8	107.0
Inventories	37.4	49.5
Recoverable from the U.S. government and other third parties for environmental remediation costs	22.3	23.6
Receivable from Northrop Grumman Corporation ("Northrop")	6.0	6.0
Other receivables, prepaid expenses and other	18.0	21.5
Income taxes	3.2	5.3
Total Current Assets	344.9	400.9
Noncurrent Assets
Property, plant and equipment, net	127.7	126.9
Real estate held for entitlement and leasing	64.4	63.3
Recoverable from the U.S. government and other third parties for environmental remediation costs	109.9	114.1
Receivable from Northrop	66.8	66.3
Goodwill	94.9	94.9
Intangible assets	14.6	15.4
Other noncurrent assets, net	50.8	57.7
Total Noncurrent Assets	529.1	538.6
Total Assets	874.0	939.5
Current Liabilities
Short-term borrowings and current portion of long-term debt	2.8	2.8
Accounts payable	39.6	33.8
Reserves for environmental remediation costs	38.5	40.7
Postretirement medical and life benefits	6.8	6.8
Advance payments on contracts	101.4	108.5
Deferred income taxes	8.8	3.1
Other current liabilities	99.7	104.1
Total Current Liabilities	297.6	299.8
Noncurrent Liabilities
Senior debt	46.2	47.5
Senior subordinated notes		75.0
Convertible subordinated notes	200.2	200.2
Other debt	0.8	0.9
Deferred income taxes	0.3	4.5
Reserves for environmental remediation costs	146.4	149.9
Pension benefits	225.4	236.4
Postretirement medical and life benefits	67.4	68.4
Other noncurrent liabilities	61.0	64.1
Total Noncurrent Liabilities	747.7	846.9
Total Liabilities	1,045.3	1,146.7
Commitments and Contingencies (Note 7)
Redeemable common stock, par value of $0.10; 0.4 million shares issued and outstanding as of May 31, 2012 and November 30, 2011 (Note 8)	4.2	4.4
Shareholders' Deficit
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; 58.6 million shares issued and outstanding as of May 31, 2012; 58.4 million shares issued and outstanding as of November 30, 2011	5.9	5.9
Other capital	263.7	261.2
Accumulated deficit	(175.2)	(179.3)
Accumulated other comprehensive loss, net of income taxes	(269.9)	(299.4)
Total Shareholders' Deficit	(175.5)	(211.6)
Total Liabilities, Redeemable Common Stock and Shareholders' Deficit	$ 874.0	$ 939.5