CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total Shareholders' Equity	Common stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling interests	Total
BALANCE at Dec. 31, 2012	$ 3,341,295	$ 1,624		$ (257,850)	$ 3,597,521	$ 85,799	$ 3,427,094
BALANCE (in shares) at Dec. 31, 2012		162,360,000
Increase (Decrease) in Shareholders' Equity
Net earnings (loss)	667,711				667,711	155,315	823,026
Other comprehensive income ( loss)	(40,351)			(40,351)		(772)	(41,123)
Dividends ($0.84, $0.84 and $0.64 per share for the years ended December 31, 2015, 2014 and 2013, respectively)	(104,488)				(104,488)		(104,488)
Distributions to noncontrolling interests						(124,853)	(124,853)
Capital contributions by noncontrolling interests						1,697	1,697
Other noncontrolling interest transactions	(975)		$ (975)			6,650	5,675
Stock-based plan activity	93,847	$ 15	93,832				93,847
Stock-based plan activity (in shares)		1,518,000
Repurchase of common stock	(200,052)	$ (26)	(79,946)		(120,080)		$ (200,052)
Repurchase of common stock (in shares)		(2,592,000)					(2,591,557)
Stock issued in connection with conversion of debt (in shares)		2,000
BALANCE at Dec. 31, 2013	3,756,987	$ 1,613	12,911	(298,201)	4,040,664	123,836	$ 3,880,823
BALANCE (in shares) at Dec. 31, 2013		161,288,000
Increase (Decrease) in Shareholders' Equity
Net earnings (loss)	510,909				510,909	136,634	647,543
Other comprehensive income ( loss)	(186,011)			(186,011)		(7,309)	(193,320)
Dividends ($0.84, $0.84 and $0.64 per share for the years ended December 31, 2015, 2014 and 2013, respectively)	(132,608)				(132,608)		(132,608)
Distributions to noncontrolling interests						(138,041)	(138,041)
Capital contributions by noncontrolling interests						3,336	3,336
Other noncontrolling interest transactions	751		751			(5,497)	(4,746)
Stock-based plan activity	66,925	$ 6	66,919				66,925
Stock-based plan activity (in shares)		675,000
Repurchase of common stock	(906,083)	$ (133)	(80,581)		(825,369)		$ (906,083)
Repurchase of common stock (in shares)		(13,331,000)					(13,331,402)
Debt conversions	1				1		$ 1
Stock issued in connection with conversion of debt (in shares)		2,000
BALANCE at Dec. 31, 2014	3,110,871	$ 1,486		(484,212)	3,593,597	112,959	3,223,830
BALANCE (in shares) at Dec. 31, 2014		148,634,000
Increase (Decrease) in Shareholders' Equity
Net earnings (loss)	412,512				412,512	62,494	475,006
Other comprehensive income ( loss)	51,437			51,437		(1,267)	50,170
Dividends ($0.84, $0.84 and $0.64 per share for the years ended December 31, 2015, 2014 and 2013, respectively)	(122,609)				(122,609)		(122,609)
Distributions to noncontrolling interests						(58,986)	(58,986)
Capital contributions by noncontrolling interests						5,254	5,254
Other noncontrolling interest transactions	334		334			(4,302)	(3,968)
Stock-based plan activity	54,661	$ 5	54,656				54,661
Stock-based plan activity (in shares)		321,000
Repurchase of common stock	(509,658)	$ (101)	(54,789)		(454,768)		$ (509,658)
Repurchase of common stock (in shares)		(10,105,000)					(10,104,988)
Debt conversions	(201)		$ (201)				$ (201)
Stock issued in connection with conversion of debt (in shares)		168,000
BALANCE at Dec. 31, 2015	$ 2,997,347	$ 1,390		$ (432,775)	$ 3,428,732	$ 116,152	$ 3,113,499
BALANCE (in shares) at Dec. 31, 2015		139,018,000