CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2008	$ 87,364	$ 1,117,936	$ 38,163	$ (237,152)	$ (487,266)	$ 10,561	$ 529,606
Balance (in shares) at Dec. 31, 2008	349,456				(38,142)
Stock plans (in shares)					1,014
Stock plans	0	(5,359)	0	0	13,875	0	8,516
Dividends on common stock	0	(156,176)	(156,190)	0	0	0	(312,366)
Net income	0	0	120,783	0	0	2,398	123,181
Other comprehensive income (loss), net of tax	0	0	0	(8,367)	0	0	(8,367)
Distributions	0	0	0	0	0	(1,500)	(1,500)
Acquisition of the Acquired Business							0
Balance at Dec. 31, 2009	87,364	956,401	2,756	(245,519)	(473,391)	11,459	339,070
Balance (in shares) at Dec. 31, 2009	349,456				(37,128)
Stock plans (in shares)					2,997
Stock plans	0	(28,129)	0	0	40,105	0	11,976
Dividends on common stock	0	(451,067)	(78,322)	0	0	0	(529,389)
Net income	0	0	152,673	0	0	3,044	155,717
Other comprehensive income (loss), net of tax	0	0	0	15,970	0	0	15,970
Distributions	0	0	0	0	0	(1,500)	(1,500)
Acquisition of the Acquired Business	169,633	5,048,266	0	0	0	0	5,217,899
Acquisition of the Acquired Business (in shares)	678,530
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 (in shares)					1,273
Stock plans	0	(5,701)	0	0	18,285	0	12,584
Dividends on common stock	0	(746,387)	0
Net income			149,614			7,994	157,608
Other comprehensive income (loss), net of tax				(157,414)			(157,414)
Distributions						(7,000)	(7,000)
Acquisition of the Acquired Business							0
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)