Consolidated Statements Of Equity (USD $) In Thousands, except Share data	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, 2012	$ 256,997	$ 4,639,563	$ 63,205	$ (483,576)	$ (368,593)	$ 11,675	$ 4,119,271
Balance (in shares) at Dec. 31, 2012	1,027,986,000				29,576,000
Stock plans		(22,268)			30,679		8,411
Stock plans (in shares)					1,107,000
Dividends on common stock		(299,822)					(299,822)
Net income			45,080			2,643	47,723
Pension settlement costs, net of tax				24,992			24,992
Other comprehensive income, net of tax				19,805			19,805
Distributions						(6,400)	(6,400)
Sale of Mohave partnership interest						(7,918)	(7,918)
Balance at Sep. 30, 2013	256,997	4,317,473	108,285	(438,779)	(337,914)		3,906,062
Balance (in shares) at Sep. 30, 2013	1,027,986,000				28,469,000
Stock plans		3,597			(236)		3,361
Stock plans (in shares)					(55,000)
Dividends on common stock		(14)	(99,932)				(99,946)
Net income			67,755				67,755
Pension settlement costs, net of tax				2,389			2,389
Other comprehensive income, net of tax				175,860			175,860
Balance at Dec. 31, 2013	256,997	4,321,056	76,108	(260,530)	(338,150)		4,055,481
Balance (in shares) at Dec. 31, 2013	1,027,986,000				28,524,000		999,462,000
Stock plans		(28,822)			39,169		10,347
Stock plans (in shares)					2,619,000
Dividends on common stock		(300,645)					(300,645)
Net income			118,947				118,947
Other comprehensive income, net of tax				8,389			8,389
Balance at Sep. 30, 2014	$ 256,997	$ 3,991,589	$ 195,055	$ (252,141)	$ (298,981)		$ 3,892,519
Balance (in shares) at Sep. 30, 2014	1,027,986,000				25,905,000		1,002,081,000