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Condensed Consolidating Financial Information Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Balance Sheet - Additional Information (Details) - $ / shares
Jun. 30, 2017
Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 450,000,000 450,000,000
Common stock, shares issued (in shares) 238,642,598 237,201,064
Common stock, shares outstanding (in shares) 237,410,395 236,344,172
Treasury stock, shares (in shares) 1,232,203 856,892