CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 153.3	$ 208.8
Accounts receivable, net	15.0	60.2
Inventories	164.0	153.1
Deferred costs associated with deferred revenue	119.6	122.3
Other current assets	22.4	22.5
Total current assets	474.3	566.9
Property, Plant and Equipment, Net	4.6	4.9
Deposits for surety bonds	19.8	19.7
Intangible assets	81.3	82.7
Other long-term assets	0.9	1.1
Total Assets	580.9	675.3
Current Liabilities
Accounts payable and accrued liabilities	57.2	54.3
Payables under SWU purchase agreements	23.5	79.4
Inventories owed to customers and suppliers	93.8	77.9
Deferred revenue and advances from customers	170.2	191.8
Total current liabilities	344.7	403.4
Long-term debt	155.3	157.5
Postretirement health and life benefit obligations	153.1	154.2
Pension benefit liabilities	159.2	161.6
Other long-term liabilities	12.3	17.5
Total liabilities	824.6	894.2
Commitments and contingencies (Note 11)
Stockholders' Deficit
Excess of capital over par value	60.1	60.0
Accumulated deficit	(309.4)	(284.5)
Accumulated other comprehensive income (loss), net of tax	0.1	0.1
Total stockholders' deficit	(243.7)	(218.9)
Total Liabilities and Stockholders’ Equity (Deficit)	580.9	675.3
Preferred Series B [Member]
Stockholders' Deficit
Preferred stock	4.6	4.6
Common Class A [Member]
Stockholders' Deficit
Common stock	0.8	0.8
Common Class B [Member]
Stockholders' Deficit
Common stock	$ 0.1	$ 0.1