CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock	Noncontrolling Interest	Total
Balance at Dec. 31, 2010
Increase (Decrease) in Equity
Revision (Adjustment of opening balance)			$ (91,452)	$ 91,452
Balance at Dec. 31, 2011 (As previously reported)	317	2,287,743	321,264	3,955,571	(977,873)	13,402	5,600,424
Balance (in shares) at Dec. 31, 2011 (As previously reported)	317,042,000
Balance at Dec. 31, 2011	317	2,287,743	229,812	4,047,023	(977,873)	13,402	5,600,424
Balance (in shares) at Dec. 31, 2011	317,042,000
Increase (Decrease) in Equity
Net income (loss)				164,827		621	165,448
Other comprehensive income (loss), net of tax			110,331			311	110,642
Issuance of common shares for stock options exercised	1	(3,626)					(3,625)
Issuance of common shares for stock options exercised (in shares)	1,152,000						1,100,000
Capital contribution from forgiveness of Issuance of treasury shares, net of tax		62,734					62,734
Issuance of treasury shares, net of tax		(25,496)			33,246		7,750
Share-based compensation		18,312					18,312
Other	1	(2,423)				(2,146)	(4,568)
Other (in shares)	619,000
Balance at Dec. 31, 2012	319	2,337,244	340,143	4,211,850	(944,627)	12,188	5,957,117
Balance (in shares) at Dec. 31, 2012	318,813,000
Increase (Decrease) in Equity
Net income (loss)				139,982		7,180	147,162
Dividends to shareholders				(47,168)			(47,168)
Other comprehensive income (loss), net of tax			(124,003)			(932)	(124,935)
Issuance of common shares for stock options exercised	1	5,382					5,383
Issuance of common shares for stock options exercised (in shares)	577,000						600,000
Share-based compensation		53,255					53,255
Other	4	(3,296)				(6,345)	(9,637)
Other (in shares)	4,321,000
Balance at Dec. 31, 2013	324	2,392,585	216,140	4,304,664	(944,627)	12,091	5,981,177
Balance (in shares) at Dec. 31, 2013	323,711,000
Increase (Decrease) in Equity
Net income (loss)				(670,659)		1,415	(669,244)
Dividends to shareholders				(59,145)			(59,145)
Redemption of subsidiary preferred stock				(1,688)			(1,688)
Repurchase of common shares					250,037		250,037
Other comprehensive income (loss), net of tax			(138,618)			(1,017)	(139,635)
Issuance of common shares for stock options exercised	3	30,260					30,263
Issuance of common shares for stock options exercised (in shares)	3,036,000						3,000,000
Share-based compensation		37,157					37,157
Other	1	(7,741)				(2,319)	(10,059)
Other (in shares)	1,449,000
Balance at Dec. 31, 2014	$ 328	$ 2,452,261	$ 77,522	$ 3,573,172	$ (1,194,664)	$ 10,170	$ 4,918,789
Balance (in shares) at Dec. 31, 2014	328,196,000