XML 15 R3.htm IDEA: XBRL DOCUMENT v3.19.1
Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
Mar. 31, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 900,000,000 900,000,000
Common stock, shares issued (in shares) 324,829,258 320,469,049
Common stock, shares outstanding (in shares) 322,051,268 318,377,161
Treasury stock, shares (in shares) 2,777,990 2,091,888