Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Operating Activities
Net loss	$ (2.1)	$ (14.0)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Income from discontinued operations, net of income taxes		(0.1)
Depreciation and amortization	14.8	6.1
Amortization of debt discount and financing costs	0.9	1.8
Retirement benefit expense	8.9	15.9
Stock-based compensation	1.4	3.2
Tax benefit on stock-based awards	(1.1)	(0.1)
Loss on debt repurchased	4.9
Changes in assets and liabilities:
Accounts receivable	14.9	(9.1)
Inventories	(33.3)	(11.8)
Other receivables, prepaid expenses and other		6.7
Income tax receivable	6.8	2.0
Real estate held for entitlement and leasing	(1.1)	(0.9)
Receivable from Northrop	(0.3)	0.5
Recoverable from the U.S. government and other third parties for environmental remediation costs	0.2	4.9
Other noncurrent assets	(4.4)	2.4
Accounts payable	(24.5)	2.5
Postretirement medical and life insurance benefits	(1.5)	(1.4)
Advance payments on contracts	(9.2)	(12.5)
Other current liabilities	7.4	17.8
Deferred income taxes	(6.8)	0.9
Reserves for environmental remediation costs	(0.9)	(5.7)
Other noncurrent liabilities	(0.3)	(2.1)
Net cash (used in) provided by continuing operations	(25.3)	7.0
Net cash used in discontinued operations		(0.1)
Net Cash (Used in) Provided by Operating Activities	(25.3)	6.9
Investing Activities
Purchases of restricted cash investments		(466.0)
Purchases of investments		(0.5)
Capital expenditures	(9.3)	(9.1)
Net Cash Used in Investing Activities	(9.3)	(475.6)
Financing Activities
Proceeds from issuance of debt		460.0
Debt issuance and amendment costs		(12.3)
Proceeds from shares issued under equity plans, net	(1.4)	0.1
Tax benefit on stock-based awards	1.1	0.1
Purchase of treasury stock	(8.6)
Debt repayments	(10.0)	(0.6)
Net Cash (Used in) Provided by Financing Activities	(18.9)	447.3
Net Decrease in Cash and Cash Equivalents	(53.5)	(21.4)
Cash and Cash Equivalents at Beginning of Period	197.6	162.1
Cash and Cash Equivalents at End of Period	144.1	140.7
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	0.9	0.3
Cash paid for interest	$ 5.1	$ 5.3