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Schedule I - Financial Information of Registrant Sch1-BALANCE SHEET Additional Information (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Share capital, shares outstanding (in shares) | 112,342,989 us-gaap_CommonStockSharesOutstanding | 86,511,713 us-gaap_CommonStockSharesOutstanding
Common Stock, Par or Stated Value Per Share | $ 1 us-gaap_CommonStockParOrStatedValuePerShare | $ 1 us-gaap_CommonStockParOrStatedValuePerShare
Parent [Member] |  |
Share capital, shares outstanding (in shares) | 112,342,989 us-gaap_CommonStockSharesOutstanding / us-gaap_ConsolidationItemsAxis = us-gaap_ParentMember | 86,511,713 us-gaap_CommonStockSharesOutstanding / us-gaap_ConsolidationItemsAxis = us-gaap_ParentMember
Common Stock, Par or Stated Value Per Share | $ 1 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_ConsolidationItemsAxis = us-gaap_ParentMember | $ 1 us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_ConsolidationItemsAxis = us-gaap_ParentMember

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- Definition Face amount or stated value per share of common stock. + 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 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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