CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2010	$ 256,997	$ 5,525,471	$ 77,107	$ (229,549)	$ (433,286)	$ 13,003	$ 5,209,743
Balance (in shares) at Dec. 31, 2010	1,027,986				(34,131)
Stock plans	0	(9,325)	0	0	18,289	0	8,964
Stock plans (in shares)	0				1,282
Dividends on common stock	0	(559,803)	0	0	0	0	(559,803)
Net income	0	0	107,367	0	0	4,993	112,360
Other comprehensive income (loss), net of tax	0	0	0	8,324	0	0	8,324
Distributions	0	0	0	0	0	(3,000)	(3,000)
Balance at Sep. 30, 2011	256,997	4,956,343	184,474	(221,225)	(414,997)	14,996	4,776,588
Balance (in shares) at Sep. 30, 2011	1,027,986				(32,849)
Stock plans	0	3,624	0	0	(4)	0	3,620
Stock plans (in shares)	0						(9)
Dividends on common stock	0	(186,584)	0	0	0	0	(186,584)
Net income	0	0	42,247	0	0	3,001	45,248
Other comprehensive income (loss), net of tax	0	0	0	(165,738)	0	0	(165,738)
Distributions	0	0	0	0	0	(4,000)	(4,000)
Balance at Dec. 31, 2011	256,997	4,773,383	226,721	(386,963)	(415,001)	13,997	4,469,134
Balance (in shares) at Dec. 31, 2011	1,027,986				(32,858)
Stock plans	0	(37,867)	0	0	46,423	0	8,556
Stock plans (in shares)	0				3,325
Dividends on common stock	0	0	(299,547)	0	0	0	(299,547)
Net income	0	0	111,757	0	0	12,358	124,115
Other comprehensive income (loss), net of tax	0	0	0	12,142	0	0	12,142
Distributions	0	0	0	0	0	(11,000)	(11,000)
Balance at Sep. 30, 2012	$ 256,997	$ 4,735,516	$ 38,931	$ (374,821)	$ (368,578)	$ 15,355	$ 4,303,400
Balance (in shares) at Sep. 30, 2012	1,027,986				(29,533)