EARNINGS PER COMMON SHARE (DETAILS) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Basic earnings (loss) per common share
Net income (loss) available to common shareholders	$ 212,058	$ 238,842	$ (70,634)	$ 555,505
Weighted average common shares outstanding	125,971,000	120,091,000	121,197,000	123,320,000
Basic earnings (loss) per common share	$ 1.68	$ 1.99	$ (0.58)	$ 4.50
Diluted earnings (loss) per common share
Net income (loss) available to common shareholders	$ 212,058	$ 238,842	$ (70,634)	$ 555,505
Weighted average common shares outstanding - basic	125,971,000	120,091,000	121,197,000	123,320,000
Share equivalents:
Warrants	1,108,000	12,012,000	0	11,851,000
Stock compensation plans	923,000	2,303,000	0	2,211,000
Weighted average common shares outstanding - diluted	128,002,000	134,406,000	121,197,000	137,382,000
Diluted earnings (loss) per common share	$ 1.66	$ 1.78	$ (0.58)	$ 4.04
Antidilutive securities excluded from computation of earnings per share amount	1,959,750