CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Items, Net	Noncontrolling Interests
Balance at Dec. 31, 2010	$ 1,952,865	$ 2,001	$ 1,228,655	$ 685,310	$ 29,482	$ 7,417
Balance (in shares) at Dec. 31, 2010		200,064,066
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation, including tax benefit of $254 and $57 for the six months ended June 30, 2012 and 2011, respectively	79,493	32	79,461
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation, including tax benefit of $254 and $57 for the six months ended June 30, 2012 and 2011, respectively (in shares)		3,191,546
Stock repurchases	(260,970)	(4)	(260,966)
Stock repurchases (in shares)		(384,169)
Parent cash dividends declared	(88,225)			(88,225)
Currency translation adjustment	41,474				41,319	155
Net income (loss)	327,666			326,144		1,522
Noncontrolling interests equity contributions	217					217
Noncontrolling interests dividends	(808)					(808)
Balance at Jun. 30, 2011	2,051,712	2,029	1,047,150	923,229	70,801	8,503
Balance (in shares) at Jun. 30, 2011		202,871,443
Balance at Dec. 31, 2011	1,254,256	1,721	343,603	902,567	(2,203)	8,568
Balance (in shares) at Dec. 31, 2011	172,140,966	172,140,966
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation, including tax benefit of $254 and $57 for the six months ended June 30, 2012 and 2011, respectively	23,449	6	23,443
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation, including tax benefit of $254 and $57 for the six months ended June 30, 2012 and 2011, respectively (in shares)		597,460
Stock repurchases	(34,688)	(11)	(34,677)
Stock repurchases (in shares)		(1,103,149)
Parent cash dividends declared	(89,161)			(89,161)
Currency translation adjustment	1,102				918	184
Net income (loss)	94,897			93,405		1,492
Noncontrolling interests equity contributions	46					46
Noncontrolling interests dividends	(577)					(577)
Parent purchase of noncontrolling interests	1,000					1,000
Balance at Jun. 30, 2012	$ 1,250,324	$ 1,716	$ 332,369	$ 906,811	$ (1,285)	$ 10,713
Balance (in shares) at Jun. 30, 2012	171,635,277	171,635,277