Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Operating Activities
Net (loss) income	$ (61.8)	$ 171.6
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Loss from discontinued operations, net of income taxes	0.6	0.2
Depreciation and amortization	45.9	26.6
Amortization of debt discount and financing costs	2.7	3.6
Stock-based compensation	4.5	9.7
Retirement benefit expense	26.7	48.5
Loss on debt repurchased	60.6	0
Loss on bank amendment	0.2	0
Loss on disposal of long-lived assets	2.5	0.1
Tax benefit on stock-based awards	(1.5)	(0.1)
Changes in assets and liabilities:
Accounts receivable	(0.8)	(36.9)
Inventories	(27.2)	(46.5)
Other receivables, prepaid expenses and other	(3.5)	5.5
Income tax receivable	1.4	(1.8)
Real estate held for entitlement and leasing	(7.7)	(2.8)
Receivable from Northrop	(2.0)	(0.8)
Recoverable from the U.S. government and other third parties for environmental remediation costs	5.4	13.7
Other noncurrent assets	(24.0)	(0.9)
Accounts payable	(7.1)	32.0
Postretirement medical and life benefits	(4.2)	(4.3)
Advance payments on contracts	18.0	(14.5)
Other current liabilities	10.9	42.9
Deferred income taxes	(6.1)	(204.7)
Reserves for environmental remediation costs	(2.7)	(10.4)
Other noncurrent liabilities	3.4	(4.1)
Net cash provided by continuing operations	34.2	26.6
Net cash used in discontinued operations	(0.1)	(0.1)
Net Cash Provided by Operating Activities	34.1	26.5
Investing Activities
Purchases of restricted cash investments	0	(470.0)
Sale of restricted cash investments	0	470.0
Purchase of Rocketdyne Business	0.2	(411.2)
Purchases of investments	0	(0.5)
Capital expenditures	(31.9)	(38.7)
Net cash provided by (used in) investing activities	(31.7)	(450.4)
Financing Activities
Proceeds from issuance of debt	189.0	460.0
Debt issuance costs	(4.2)	(14.7)
Debt repayments/repurchases	(165.0)	(2.0)
Proceeds from shares issued under equity plans, net	(1.9)	0.3
Purchase of treasury stock	(64.5)	0
Tax benefit on stock-based awards	1.5	0.1
Net Cash (Used in) Provided by Financing Activities	(45.1)	443.7
Net (Decrease) Increase in Cash and Cash Equivalents	(42.7)	19.8
Cash and Cash Equivalents at Beginning of Period	197.6	162.1
Cash and Cash Equivalents at End of Period	154.9	181.9
Supplemental disclosures of cash flow information
Cash paid for interest	27.8	16.0
Cash paid for income taxes	4.6	6.3
Conversion of debt to common stock	$ 0	$ 1.6