Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

v3.3.1.900
CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
shares in Millions
Dec. 31, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 2.50 $ 2.50
Common stock, shares authorized 500.0 500.0
Common stock, shares issued 222.4 222.3
Treasury stock, shares 47.2 40.1
Common stock held by employee benefits trust, at cost, shares 0.9 1.1