Trade and Finance Receivables - Trade Receivables (Details) (USD $)							12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014 Iranian customers	Dec. 31, 2013 Iranian customers	Mar. 31, 2013 Iranian customers	Dec. 31, 2013 Iranian customers Customer not able to find acceptable methods of payment	Dec. 31, 2012 Iranian customers Customer not able to find acceptable methods of payment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables, less allowances with Iranian customers	$ 278,167,000	$ 252,068,000	$ 307,745,000	$ 14,000,000	$ 17,000,000	$ 19,000,000
Trade receivables reserved amounts related to one customer							$ 2,000,000	$ 9,000,000