Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	May 31, 2014	May 31, 2013
Operating Activities
Net loss	$ (52.3)	$ (25.8)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Loss from discontinued operations, net of income taxes	0.8	0
Depreciation and amortization	30.2	11.4
Amortization of debt discount and financing costs	1.8	2.7
Stock-based compensation	3.0	6.3
Retirement benefit expense	17.8	32.0
Loss on debt repurchased	50.8	0
Loss on bank amendment	0.2	0
Tax benefit on stock-based awards	(1.3)	(0.1)
Changes in assets and liabilities:
Accounts receivable	22.1	(30.5)
Inventories	(26.8)	(12.3)
Other receivables, prepaid expenses and other	3.7	6.5
Income tax receivable	3.8	(0.3)
Real estate held for entitlement and leasing	(3.6)	(1.8)
Receivable from Northrop	(1.2)	(0.2)
Recoverable from the U.S. government and other third parties for environmental remediation costs	6.6	10.2
Other noncurrent assets	(15.6)	2.1
Accounts payable	(28.0)	17.3
Postretirement medical and life benefits	(3.2)	(2.8)
Advance payments on contracts	6.1	(4.7)
Other current liabilities	(27.7)	17.8
Deferred income taxes	(3.6)	1.4
Reserves for environmental remediation costs	(7.6)	(8.0)
Other noncurrent liabilities	1.8	(2.2)
Net cash (used in) provided by continuing operations	(22.2)	19.0
Net cash used in discontinued operations	(0.1)	(0.1)
Net Cash (Used in) Provided by Operating Activities	(22.3)	18.9
Investing Activities
Purchases of restricted cash investments	0	(470.0)
Purchases of investments	0	(0.5)
Capital expenditures	(18.5)	(21.7)
Net Cash Used in Investing Activities	(18.5)	(492.2)
Financing Activities
Proceeds from issuance of debt	179.0	460.0
Debt issuance costs	(4.1)	(13.1)
Debt repayments\repurchases	(145.8)	(1.3)
Proceeds from shares issued under equity plans, net	(2.0)	0.1
Purchase of treasury stock	(64.5)	0
Tax benefit on stock-based awards	1.3	0.1
Net Cash (Used in) Provided by Financing Activities	(36.1)	445.8
Net Decrease in Cash and Cash Equivalents	(76.9)	(27.5)
Cash and Cash Equivalents at Beginning of Period	197.6	162.1
Cash and Cash Equivalents at End of Period	120.7	134.6
Supplemental disclosures of cash flow information
Cash paid for interest	23.7	10.7
Cash paid for income taxes	$ 1.7	$ 4.9