Condensed Consolidated Statement of Equity (USD $)		Total	Redeemable Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
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)
Redeemable preferred stock, carrying amount at Dec. 31, 2010			316,581,000
Balance, shares at Dec. 31, 2010				290,826,284
Redeemable preferred stock, shares outstanding at Dec. 31, 2010			6,361,000
Stock-based compensation related activity, net of forfeitures, value		18,011,000		9,000	18,002,000	0	0	0
Conversion of redeemable convertible preferred stock into common stock, preferred stock amount converted			0
Stock-based compensation related activity, 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)
Other comprehensive income (loss)	[1]	37,615,000		0	0	37,232,000	0	383,000
Dividends on preferred stock and amortization of issue costs, preferred stock			464,000
Dividends on preferred stock and amortization of issue costs, accumulated deficit		(10,403,000)		0	0	0	(10,403,000)	0
Net income (loss)		71,138,000		0	0	0	70,888,000	250,000
Redeemable preferred stock, carrying amount at Jun. 30, 2011			317,045,000
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
Redeemable preferred stock, shares outstanding at Jun. 30, 2011			6,361,000
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
Redeemable preferred stock, carrying amount at Mar. 31, 2011			316,813,000
Balance, shares at Mar. 31, 2011				290,717,872
Redeemable preferred stock, shares outstanding at Mar. 31, 2011			6,361,000
Stock-based compensation related activity, net of forfeitures, value		7,864,000		0	7,864,000	0	0	0
Stock-based compensation related activity, 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)
Other comprehensive income (loss)	[1]	22,458,000		0	0	22,451,000	0	7,000
Dividends on preferred stock and amortization of issue costs, preferred stock			232,000
Dividends on preferred stock and amortization of issue costs, accumulated deficit		(5,202,000)		0	0	0	(5,202,000)	0
Net income (loss)		31,014,000		0	0	0	30,871,000	143,000
Redeemable preferred stock, carrying amount at Jun. 30, 2011			317,045,000
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
Redeemable preferred stock, shares outstanding at Jun. 30, 2011			6,361,000
Balance, value at Dec. 31, 2011		2,386,864,000		2,844,000	5,312,342,000	(116,996,000)	(2,811,945,000)	619,000
Redeemable preferred stock, carrying amount at Dec. 31, 2011		305,032,000	305,032,000
Balance, shares at Dec. 31, 2011		284,449,372		284,449,372
Redeemable preferred stock, shares outstanding at Dec. 31, 2011		6,111,000	6,111,000
Stock-based compensation related activity, net of forfeitures, value		17,343,000		10,000	17,333,000	0	0	0
Conversion of redeemable convertible preferred stock into common stock, preferred stock shares converted			(6,111,000)
Conversion of redeemable convertible preferred stock into common stock, preferred stock amount converted			(305,180,000)
Conversion of redeemable convertible preferred stock into common stock, common stock shares issued				8,285,905
Conversion of redeemable convertible preferred stock into common stock, common stock amount issued		305,180,000		83,000	305,097,000
Stock-based compensation related activity, net of forfeitures, shares				997,109
Purchases and retirement of capital stock, value		(35,673,000)		(7,000)	(35,666,000)	0	0	0
Purchases and retirement of capital stock, shares				(694,373)
Other comprehensive income (loss)	[1]	27,191,000		0	0	27,931,000	0	(740,000)
Disposition of noncontrolling interest		368,000						368,000
Dividends on preferred stock and amortization of issue costs, preferred stock			148,000
Dividends on preferred stock and amortization of issue costs, accumulated deficit		(2,629,000)		0	0	0	(2,629,000)	0
Net income (loss)		167,354,000		0	0	0	166,044,000	1,310,000
Redeemable preferred stock, carrying amount at Jun. 30, 2012		0	0
Balance, value at Jun. 30, 2012		2,865,998,000		2,930,000	5,599,106,000	(89,065,000)	(2,648,530,000)	1,557,000
Balance, shares at Jun. 30, 2012		293,038,013		293,038,013
Redeemable preferred stock, shares outstanding at Jun. 30, 2012		0	0
Balance, value at Mar. 31, 2012		2,736,666,000		2,929,000	5,591,191,000	(93,043,000)	(2,764,543,000)	132,000
Redeemable preferred stock, carrying amount at Mar. 31, 2012			0
Balance, shares at Mar. 31, 2012				292,928,485
Redeemable preferred stock, shares outstanding at Mar. 31, 2012			0
Stock-based compensation related activity, net of forfeitures, value		7,916,000		1,000	7,915,000	0	0	0
Stock-based compensation related activity, net of forfeitures, shares				113,168
Purchases and retirement of capital stock, value		0		0		0	0	0
Purchases and retirement of capital stock, shares				(3,640)
Other comprehensive income (loss)	[1]	3,964,000		0	0	3,978,000	0	(14,000)
Disposition of noncontrolling interest		368,000						368,000
Net income (loss)		117,084,000		0	0	0	116,013,000	1,071,000
Redeemable preferred stock, carrying amount at Jun. 30, 2012		0
Balance, value at Jun. 30, 2012		$ 2,865,998,000		$ 2,930,000	$ 5,599,106,000	$ (89,065,000)	$ (2,648,530,000)	$ 1,557,000
Balance, shares at Jun. 30, 2012		293,038,013		293,038,013
Redeemable preferred stock, shares outstanding at Jun. 30, 2012		0

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