CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (in usd per share)	$ 1	$ 1
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in usd per share)	$ 0.25	$ 0.25
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	331,965,000	298,478,000
Treasury stock, shares	28,000	7,000