EARNINGS PER COMMON SHARE (DETAILS) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Basic earnings (loss) per common share
Net income (loss)	$ 189,066	$ 110,287	$ 324,905	$ (264,254)
Less preferred share dividends	11,527	9,219	20,746	18,438
Loss on repurchase of preferred shares	9,387	0	14,009	0
Net income (loss) available to common shareholders	168,152	101,068	290,150	(282,692)
Weighted average number of common shares outstanding - basic	123,823	124,132	124,802	118,771
Basic earnings (loss) per common share	$ 1.36	$ 0.81	$ 2.32	$ (2.38)
Diluted earnings (loss) per common share
Net income (loss) available to common shareholders	$ 168,152	$ 101,068	$ 290,150	$ (282,692)
Weighted average number of common shares outstanding - basic	123,823	124,132	124,802	118,771
Warrants	0	2,915	0	0
Stock compensation plans	1,160	1,322	1,023	0
Weighted average number of common shares outstanding - diluted	124,983	128,369	125,825	118,771
Diluted earnings (loss) per common share	$ 1.35	$ 0.79	$ 2.31	$ (2.38)
Anti-dilutive shares excluded from the dilutive computation	539	894	1,220	9,567