Consolidated Statements of Changes in Equity (USD $) In Thousands	Total	Series A Preferred Stock [Member]	Series C Preferred Stock [Member]	Preferred Stock [Member] Series A Preferred Stock [Member]	Preferred Stock [Member] Series C Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Additional Paid-In Capital [Member] Series A Preferred Stock [Member]	Additional Paid-In Capital [Member] Series C Preferred Stock [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Non-Controlling Interest [Member]
Balance at Dec. 31, 2010	$ 3,024,547			$ 937,323	$ 0	$ 790,956	$ 2,293,263			$ (114,176)	$ 57,158	$ (966,606)	$ 26,629
Net income (loss)	(60,844)											(60,624)	(220)
Other comprehensive loss, net of income taxes	(36,065)										(36,065)
Cash dividends declared on common stock - $0.04 per share	(31,412)											(31,412)
Cash dividends paid	(48,394)						(48,394)
Accretion of discount for Series A Preferred Stock	(9,694)			9,694			(9,694)
Restricted share unit activity						19	(19)
Share-based compensation expense	6,029						6,029
Issuance (forfeitures) of non-vested stock, net						(1)	1
Settlement of prepaid common stock purchase contracts	0					15	(15)
Change in ownership at majority-owned subsidiary	(26,409)												(26,409)
Balance at Dec. 31, 2011	2,827,452			947,017	0	790,989	2,241,171			(114,176)	21,093	(1,058,642)
Net income (loss)	830,209											830,209
Other comprehensive loss, net of income taxes	(16,992)										(16,992)
Cash dividends declared on common stock - $0.04 per share	(31,462)											(31,462)
Cash dividends paid	(48,394)						(48,394)
Accretion of discount for Series A Preferred Stock	(10,310)			10,310			(10,310)
Restricted share unit activity						1,284	(1,211)					(73)
Share-based compensation expense	9,333						9,333
Share-based compensation tax benefit (deficiency)	(715)						(715)
Settlement of prepaid common stock purchase contracts	0
Balance at Dec. 31, 2012	3,569,431			957,327	0	792,273	2,189,874			(114,176)	4,101	(259,968)
Net income (loss)	159,383											159,383
Other comprehensive loss, net of income taxes	(45,359)										(45,359)
Cash dividends declared on common stock - $0.04 per share	(36,427)											(36,427)
Cash dividends paid		(33,741)	(2,730)					(33,741)	(2,730)
Accretion of discount for Series A Preferred Stock	(10,543)			10,543				(10,543)
Restricted share unit activity	(3,564)					2,616	(5,680)					(500)
Redemption of Series A Preferred Stock		(967,870)		(967,870)
Share-based compensation expense	7,465						7,465
Share-based compensation tax benefit (deficiency)	317						317
Settlement of prepaid common stock purchase contracts	122,848					122,848	(122,848)
Stock options exercised	1,044					437	607
Issuance of common stock, net of issuance costs	175,174		125,862		125,862	59,871	115,303
Balance at Dec. 31, 2013	$ 2,948,985			$ 0	$ 125,862	$ 978,045	$ 2,138,024			$ (114,176)	$ (41,258)	$ (137,512)	$ 0