CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data	Total	Common Stock	Capital In Excess of Par Value	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Stockholders' Equity	Non-Controlling Interests
Beginning Balance at Dec. 31, 2009	$ 1,833,100	$ 236,919	$ 1,300,998	$ 951,647	$ (69,370)	$ (612,997)	$ 1,807,197	$ 25,903
Beginning Balance (in shares) at Dec. 31, 2009		236,919,404
Net income	149,725			135,975			135,975	13,750
Other comprehensive income, net of tax	14,547					14,556	14,556	(9)
Exercise of stock options (in shares)		323,619
Exercise of stock options	343	324	669		(650)		343
Excess tax benefits on stock options	2,127		2,127				2,127
Contributions to thrift plan (in shares)		282,022
Contributions to thrift plan	6,923	282	6,641				6,923
Share vesting (in shares)		1,738,734
Share vesting		1,739	(1,739)
Purchase of treasury shares	(13,264)				(13,264)		(13,264)
Stock-based compensation charges, net of tax	35,091		35,091				35,091
Distributions to noncontrolling interests and other	7							7
Acquisition of noncontrolling interests	2,682							2,682
Ending Balance at Jun. 30, 2010	2,031,281	239,264	1,343,787	1,087,622	(83,284)	(598,441)	1,988,948	42,333
Ending Balance (in shares) at Jun. 30, 2010		239,263,779
Beginning Balance at Dec. 31, 2010	1,512,267	240,791	1,357,316	100,373	(85,735)	(163,717)	1,449,028	63,239
Beginning Balance (in shares) at Dec. 31, 2010		240,791,473
Net income	145,863			137,748			137,748	8,115
Other comprehensive income, net of tax	35,858					34,348	34,348	1,510
Exercise of stock options (in shares)		399,239
Exercise of stock options	2,091	399	1,692				2,091
Share vesting (in shares)		961,748
Share vesting		962	(962)
Purchase of treasury shares	(7,035)				(7,035)		(7,035)
Stock-based compensation charges, net of tax	10,524		10,524				10,524
Distributions to noncontrolling interests and other	(2,500)							(2,500)
Ending Balance at Jun. 30, 2011	$ 1,697,068	$ 242,152	$ 1,368,570	$ 238,121	$ (92,770)	$ (129,369)	$ 1,626,704	$ 70,364
Ending Balance (in shares) at Jun. 30, 2011		242,152,460