CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash Flows from Operating Activities
Net income (loss)	$ (540.7)	$ 7.5	$ 58.5
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	50.1	43.3	31.9
Deferred income taxes	301.6	44.3	(1.6)
Other non-cash income on release of disposal obligation	(0.6)	(44.4)
Preferred stock issuance costs and capitalized dividends paid-in-kind	10.4	8.5
Expense of American Centrifuge capital assets	146.6
Gain on extinguishment of convertible senior notes	(3.1)
Changes in operating assets and liabilities:
Accounts receivable - (increase) decrease	146.6	(117.2)	(37.3)
Inventories, net - (increase) decrease	(75.2)	25.1	269.9
Payables under Russian Contract - increase	5.7	66.4	13.3
Deferred revenue, net of deferred costs - increase (decrease)	5.2	(10.6)	(3.9)
Accrued depleted uranium disposition - increase (decrease)	19.8	(30.2)	36.1
Accounts payable and other liabilities - increase (decrease)	(10.6)	23.5	44.6
Other, net	0.5	6.3	31.9
Net Cash Provided by Operating Activities	56.3	22.5	443.4
Cash Flows Used in Investing Activities
Capital expenditures	(152.8)	(162.2)	(441.3)
Deposits for surety bonds - net (increase) decrease	(10.4)	17.6	(22.5)
Net Cash (Used in) Investing Activities	(163.2)	(144.6)	(463.8)
Cash Flows Used in Financing Activities
Borrowings under credit facility	80.9	38.7	196.6
Repayments under credit facility	(80.9)	(38.7)	(196.6)
Proceeds from credit facility term loan		85.0
Proceeds from issuance of convertible preferred stock and warrants		75.0
Repayment and repurchases of senior notes			(95.7)
Payments for deferred financing costs and preferred stock issuance costs	(5.0)	(16.4)	(0.7)
Common stock issued (purchased), net	(1.5)	(1.8)	(0.4)
Net Cash Provide By (Used in) Financing Activities	(6.5)	141.8	(96.8)
Net Increase (Decrease)	(113.4)	19.7	(117.2)
Cash and Cash Equivalents at Beginning of Period	151.0	131.3	248.5
Cash and Cash Equivalents at End of Period	37.6	151.0	131.3
Supplemental Cash Flow Information:
Interest paid, net of amount capitalized	4.5		0.7
Income taxes paid, net of refunds		$ 3.2	$ 4.5

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).