Condensed Consolidated Statement of Equity (USD $)		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Balance, value at Dec. 31, 2009		$ 2,936,085,000	$ 2,927,000	$ 5,685,874,000	$ (124,224,000)	$ (2,628,336,000)	$ (156,000)
Balance, shares at Dec. 31, 2009			292,729,684
Issuances of capital stock, net of forfeitures, value		8,397,000	14,000	8,383,000	0	0	0
Issuances of capital stock, net of forfeitures, shares			1,354,448
Purchases and retirement of capital stock, value		(146,884,000)	(38,000)	(146,846,000)	0	0	0
Purchases and retirement of capital stock, shares			(3,833,169)
Stock-based compensation expense		18,143,000	0	18,143,000	0	0	0
Other comprehensive income (loss)	[1]	(106,454,000)	0	0	(106,619,000)	0	165,000
Dividends on preferred stock		(10,403,000)	0	0	0	(10,403,000)	0
Net income (loss)		(217,014,000)	0	0	0	(216,804,000)	(210,000)
Balance, value at Jun. 30, 2010		2,481,870,000	2,903,000	5,565,554,000	(230,843,000)	(2,855,543,000)	(201,000)
Balance, shares at Jun. 30, 2010			290,250,963
Balance, value at Mar. 31, 2010		2,687,109,000	2,912,000	5,592,251,000	(155,112,000)	(2,752,812,000)	(130,000)
Balance, shares at Mar. 31, 2010			291,230,613
Issuances of capital stock, net of forfeitures, value		1,572,000	1,000	1,571,000	0	0	0
Issuances of capital stock, net of forfeitures, shares			51,316
Purchases and retirement of capital stock, value		(38,158,000)	(10,000)	(38,148,000)	0	0	0
Purchases and retirement of capital stock, shares			(1,030,966)
Stock-based compensation expense		9,880,000	0	9,880,000	0	0	0
Other comprehensive income (loss)	[1]	(75,717,000)	0	0	(75,731,000)	0	14,000
Dividends on preferred stock		(5,202,000)	0	0	0	(5,202,000)	0
Net income (loss)		(97,614,000)	0	0	0	(97,529,000)	(85,000)
Balance, value at Jun. 30, 2010		2,481,870,000	2,903,000	5,565,554,000	(230,843,000)	(2,855,543,000)	(201,000)
Balance, shares at Jun. 30, 2010			290,250,963
Balance, value at Dec. 31, 2010		2,444,994,000	2,908,000	5,581,525,000	(178,978,000)	(2,960,082,000)	(379,000)
Balance, shares at Dec. 31, 2010		290,826,284	290,826,284
Issuances of capital stock, net of forfeitures, value		757,000	9,000	748,000	0	0	0
Issuances of capital stock, net of forfeitures, shares			911,515
Purchases and retirement of capital stock, value		(192,563,000)	(46,000)	(192,517,000)	0	0	0
Purchases and retirement of capital stock, shares			(4,638,360)
Stock-based compensation expense		17,254,000	0	17,254,000	0	0	0
Other comprehensive income (loss)	[1]	37,615,000	0	0	37,232,000	0	383,000
Dividends on preferred stock		(10,403,000)	0	0	0	(10,403,000)	0
Net income (loss)		71,138,000	0	0	0	70,888,000	250,000
Balance, value at Jun. 30, 2011		2,368,792,000	2,871,000	5,407,010,000	(141,746,000)	(2,899,597,000)	254,000
Balance, shares at Jun. 30, 2011		287,099,439	287,099,439
Balance, value at Mar. 31, 2011		2,462,996,000	2,907,000	5,549,448,000	(164,197,000)	(2,925,266,000)	104,000
Balance, shares at Mar. 31, 2011			290,717,872
Issuances of capital stock, net of forfeitures, value		106,000	0	106,000	0	0	0
Issuances of capital stock, net of forfeitures, shares			(6,404)
Purchases and retirement of capital stock, value		(150,338,000)	(36,000)	(150,302,000)	0	0	0
Purchases and retirement of capital stock, shares			(3,612,029)
Stock-based compensation expense		7,758,000	0	7,758,000	0	0	0
Other comprehensive income (loss)	[1]	22,458,000	0	0	22,451,000	0	7,000
Dividends on preferred stock		(5,202,000)	0	0	0	(5,202,000)	0
Net income (loss)		31,014,000	0	0	0	30,871,000	143,000
Balance, value at Jun. 30, 2011		$ 2,368,792,000	$ 2,871,000	$ 5,407,010,000	$ (141,746,000)	$ (2,899,597,000)	$ 254,000
Balance, shares at Jun. 30, 2011		287,099,439	287,099,439

[1] See the statement of operations and other comprehensive income (loss) for the allocation of the components of "other comprehensive income (loss)."