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Subsequent events	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent events	Subsequent Events We have evaluated all subsequent events through the date the financial statements were issued. Aluminum Purchase Agreement We have entered into a new aluminum supply agreement with Glencore pursuant to which we have agreed to sell, and Glencore has agreed to purchase, substantially all of our primary aluminum production in North America for 2015 and 2016 at variable prices determined by reference to the Midwest Transaction Price plus additional product premiums. Century Aluminum Expands Share Repurchase Program On February 26, 2015, we announced that our Board of Directors has increased the size of our ongoing share repurchase program by $20,000. In 2015 through February 27, 2015, we repurchased $5,840 of our common stock. Together with this increase and the 2015 repurchases, we had a total of $24,276 authorized for future share repurchases. See Note 7 Shareholders' equity for additional information about the stock repurchase program.

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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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