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Subsequent events	6 Months Ended
	Jun. 30, 2015
Subsequent Events [Abstract]
Subsequent events	Subsequent events We have evaluated all subsequent events through the date the financial statements were issued. See Note 2 Ravenswood impairment for additional information. Century Aluminum announces cost reduction and cash preservation program On August 6, 2015, we announced a cost reduction and cash preservation program in response to weak primary aluminum market conditions.  The program includes capacity curtailment; reductions in headcount, operating expenses and capital expenditures; and working capital liquidation.  We will continue to explore further cost reduction and cash preservation opportunities.  As a result of the cost reduction programs, we expect severance-related charges to be incurred and substantially settled in the second half of 2015.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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