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Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Trade payables | $ 11.5 | $ 5.4
Compensation and benefits payable | 12.5 | 19.2
Postretirement health and life benefit obligations - current | 13.8 | 5.3
Accrued severance payments | 3.4 | 8.7
Other accrued liabilities | 5.2 | 6.2
Accounts payable and accrued liabilities | $ 46.4 | $ 44.8

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- Definition Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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