CONDENSED CONSOLIDATED STATEMENTS OF EQUITY Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]
Common Stock, Shares, Outstanding		286,895
Stockholders' Equity Attributable to Parent	$ 2,582,699	$ 28,689	$ 483,733	$ (386,322)	$ 2,456,599
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2014-09 [Member]					117,515
Net Income (Loss) Attributable to Parent	90,828				90,828
Stock Issued During Period, Shares, Employee Benefit Plan		53
Stock Issued During Period, Value, Employee Benefit Plan	(321)	$ 6	(327)
Treasury Stock, Value, Acquired, Cost Method	$ 0		$ 11,250	(11,250)
Common Stock Issued to Directors Shares		13
Common Stock Issued to Directors	700,000	1,000	699,000
Dividends, Cash	$ (20,696)				(20,696)
Net Income (Loss) Attributable to Parent	164,750
Common Stock, Shares, Outstanding		286,961
Stockholders' Equity Attributable to Parent	2,770,593	$ 28,696	$ 495,278	(397,572)	2,644,191
Net Unrealized Holding Gain on Available for Sale Securities	(132)		(77)		(55)
Net Income (Loss) Attributable to Parent	73,922				73,922
Stock Issued During Period, Shares, Employee Benefit Plan		123
Stock Issued During Period, Value, Employee Benefit Plan	7,711	$ 12	7,699
Dividends, Cash	(20,715)				(20,715)
Common Stock, Shares, Outstanding		287,084
Stockholders' Equity Attributable to Parent	2,831,482	$ 28,708	502,950	(397,572)	2,697,396
Net Unrealized Holding Gain on Available for Sale Securities	$ (29)		(27)		(2)
Common Stock, Shares, Outstanding	279,583,006	293,380
Common Stock, Shares, Outstanding | Accounting Standards Update 2014-09 [Member]		286,895
Stockholders' Equity Attributable to Parent	$ 3,000,568	$ 29,338	615,180	(477,572)	2,833,622
Stockholders' Equity Attributable to Parent | Accounting Standards Update 2014-09 [Member]	2,700,214	$ 28,689	483,733	(386,322)	2,574,114
Net Income (Loss) Attributable to Parent	113,896				113,896
Stock Issued During Period, Shares, Employee Benefit Plan		2,465
Stock Issued During Period, Value, Employee Benefit Plan	6,209	$ 246	5,963
Dividends, Cash	(22,348)				(22,348)
Net Income (Loss) Attributable to Parent	206,489
Common Stock, Shares, Outstanding		295,845
Stockholders' Equity Attributable to Parent	3,098,431	$ 29,584	621,249	(477,572)	2,925,170
Net Unrealized Holding Gain on Available for Sale Securities	106		106
Net Income (Loss) Attributable to Parent	92,593				92,593
Stock Issued During Period, Shares, Employee Benefit Plan		(54)
Stock Issued During Period, Value, Employee Benefit Plan	$ 11,079	$ (5)	11,084
Treasury Stock, Value, Acquired, Cost Method			$ 20,000	(20,000)
Common Stock Issued to Directors Shares		28
Common Stock Issued to Directors	880,000	3,000	877,000
Dividends, Cash	$ (22,533)				(22,533)
Common Stock, Shares, Outstanding		295,819
Stockholders' Equity Attributable to Parent	3,180,631	$ 29,582	$ 653,415	$ (497,572)	2,995,206
Net Unrealized Holding Gain on Available for Sale Securities	$ 181		$ 205		$ (24)