XML 21 R5.htm IDEA: XBRL DOCUMENT v3.10.0.1
CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2018
Dec. 31, 2017
Stockholders' Equity:    
Common stock, par value per share (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 300,000,000 300,000,000
Common stock, shares issued (in shares) 99,200,000 99,200,000
Treasury stock, shares (in shares) 44,700,000 45,000,000