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, 2011	$ 1,733,712		$ 242,416	$ 1,375,976	$ 239,103	$ (95,827)	$ (102,030)	$ 1,659,638	$ 74,074
Beginning Balance (in shares) at Dec. 31, 2011			242,416,424
Net income	119,353				115,497			115,497	3,856
Other comprehensive income, net of tax	(8,409)	[1]					(8,510)	(8,510)	101
Exercise of stock options (in shares)			158,842
Exercise of stock options	716		159	557				716
Share vesting (in shares)			804,338
Share vesting			805	(805)
Purchase of treasury shares	(2,896)					(2,896)		(2,896)
Stock-based compensation charges	7,810			7,810				7,810
Noncontrolling interests distributions and other	(15,726)								(15,726)
Ending Balance at Jun. 30, 2012	1,834,560		243,380	1,383,538	354,600	(98,723)	(110,540)	1,772,255	62,305
Ending Balance (in shares) at Jun. 30, 2012			243,379,604
Beginning Balance at Dec. 31, 2012	1,952,105		243,442	1,391,271	445,756	(98,725)	(94,413)	1,887,331	64,774
Beginning Balance (in shares) at Dec. 31, 2012			243,442,156
Net income	(121,819)				(128,870)			(128,870)	7,051
Other comprehensive income, net of tax	(62,287)	[1]					(62,260)	(62,260)	(27)
Exercise of stock options (in shares)			44,862
Exercise of stock options	116		45	71				116
Share vesting (in shares)			441,554
Share vesting			442	(442)
Purchase of treasury shares	(1,083)					(1,083)		(1,083)
Stock-based compensation charges	10,110			9,486		624		10,110
Noncontrolling interests distributions and other	(11,243)								(11,243)
Ending Balance at Jun. 30, 2013	$ 1,765,899		$ 243,929	$ 1,400,386	$ 316,886	$ (99,184)	$ (156,673)	$ 1,705,344	$ 60,555
Ending Balance (in shares) at Jun. 30, 2013			243,928,572

[1] The tax impacts on amounts presented in other comprehensive income (loss) are not significant.