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Consolidated Balance Sheets Parenthetical (USD $)
Dec. 31, 2014
Dec. 31, 2013
Preferred Stock, Par or Stated Value Per Share $ 0us-gaap_PreferredStockParOrStatedValuePerShare $ 0us-gaap_PreferredStockParOrStatedValuePerShare
Preferred Stock, Shares Authorized 50,000,000us-gaap_PreferredStockSharesAuthorized 50,000,000us-gaap_PreferredStockSharesAuthorized
Preferred Stock, Shares Outstanding 0us-gaap_PreferredStockSharesOutstanding 10,000,000us-gaap_PreferredStockSharesOutstanding
Preferred Stock, Liquidation Preference Per Share $ 50us-gaap_PreferredStockLiquidationPreference $ 50us-gaap_PreferredStockLiquidationPreference
Common Stock, Par or Stated Value Per Share $ 0us-gaap_CommonStockParOrStatedValuePerShare $ 0us-gaap_CommonStockParOrStatedValuePerShare
Common Stock, Shares Authorized 450,000,000us-gaap_CommonStockSharesAuthorized 450,000,000us-gaap_CommonStockSharesAuthorized
Common Stock, Shares, Outstanding 269,000,000us-gaap_CommonStockSharesOutstanding 248,000,000us-gaap_CommonStockSharesOutstanding