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Consolidated Balance Sheet (Paranthetical) (USD $)
Feb. 26, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Statement of Financial Position [Abstract]        
Common Stock, Par or Stated Value Per Share   $ 0.01us-gaap_CommonStockParOrStatedValuePerShare    
Common Stock, Shares Authorized   1,100,000,000us-gaap_CommonStockSharesAuthorized    
Common Stock, Shares, Issued   480,136,039us-gaap_CommonStockSharesIssued 479,767,470us-gaap_CommonStockSharesIssued 412,600,700us-gaap_CommonStockSharesIssued
Entity Common Stock, Shares Outstanding 481,501,265dei_EntityCommonStockSharesOutstanding 480,094,891dei_EntityCommonStockSharesOutstanding