Condensed Consolidated Statement of Equity (USD $)	Total	Stockholders' Equity, Total [Member]		Common Stock [Member]		Preferred Stock [Member]	Additional Paid-in Capital [Member]		Accumulated Translation Adjustment [Member]		Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]		Dividends/Distributions in Excess of Earnings [Member]		Noncontrolling Interest [Member]
Balance, value at Dec. 31, 2012		$ 2,951,264,000		$ 2,932,000		$ 0	$ 5,623,595,000		$ 102,125,000		$ (163,916,000)		$ (2,625,990,000)		$ 12,518,000
Balance, shares at Dec. 31, 2012				293,164,786
Preferred Stock, Shares Outstanding						0
Stock-based compensation related activity, net of forfeitures, value		10,029,000		9,000			10,020,000		0		0		0		0
Stock-based compensation related activity, net of forfeitures, shares				947,979
Purchases and retirement of capital stock, value		(23,579,000)		(3,000)			(23,576,000)		0		0		0		0
Purchases and retirement of capital stock, shares				(341,559)
Other comprehensive income (loss)	10,180,000	10,180,000	[1]	0	[1]		0	[1]	(815,000)	[1]	10,570,000	[1]	0	[1]	425,000	[1]
Net income (loss)	16,737,000	16,737,000		0			0		0		0		15,462,000		1,275,000
Balance, value at Mar. 31, 2013		2,964,631,000		2,938,000		0	5,610,039,000		101,310,000		(153,346,000)		(2,610,528,000)		14,218,000
Balance, shares at Mar. 31, 2013				293,771,206
Balance, value at Dec. 31, 2013	6,941,175,000	6,941,175,000		3,341,000		98,000	9,482,769,000		58,261,000		(81,873,000)		(2,535,879,000)		14,458,000
Balance, shares at Dec. 31, 2013	334,070,016			334,070,016
Preferred Stock, Shares Outstanding	9,775,000					9,775,000
Stock-based compensation related activity, net of forfeitures, value		11,956,000		0			11,956,000		0		0				0
Stock-based compensation related activity, net of forfeitures, shares				14,031
Purchases and retirement of capital stock, value		(21,417,000)		(3,000)			(21,414,000)		0		0				0
Purchases and retirement of capital stock, shares				(288,066)
Other comprehensive income (loss)	28,319,000	28,319,000	[1]	0	[1]		0	[1]	11,489,000	[1]	16,182,000	[1]			648,000	[1]
Common stock dividends/distributions		(117,162,000)											(117,162,000)
Preferred stock dividends		(10,997,000)											(10,997,000)
Net income (loss)	102,793,000	102,793,000		0			0		0		0		101,497,000		1,296,000
Balance, value at Mar. 31, 2014	$ 6,934,667,000	$ 6,934,667,000		$ 3,338,000		$ 98,000	$ 9,473,311,000		$ 69,750,000		$ (65,691,000)		$ (2,562,541,000)		$ 16,402,000
Balance, shares at Mar. 31, 2014	333,795,981			333,795,981

[1] See the condensed statement of operations and other comprehensive income (loss) for the components of "other comprehensive income (loss)" and note 4 with respect to the reclassification adjustment.