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Accounts Payable and Accrued Liabilities (Tables)
12 Months Ended
Dec. 31, 2012
Accounts Payable and Accrued Liabilities, Current [Abstract]  
Accounts Payable and Accrued Liabilities
December 31,
2012
2011
(millions)
Trade payables
$ 21.1 $ 20.2
Compensation and benefits
41.0 45.2
American Centrifuge accrued liabilities
13.3 11.0
Accrued property and other taxes payable
4.7 10.9
Accrued lease turnover – current
32.2 -
Accrued interest payable on debt
5.3 4.7
Other accrued liabilities
28.2 28.1
$ 145.8 $ 120.1