Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Held in Treasury [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Additional Paid-in Capital [Member]	Common Stock [Member]
Common Stock Dividends Declared (in dollars per share)	$ 0.375
Balance at Dec. 31, 2012	$ 13,284,764	$ (33,822)	$ 10,175,631	$ 439,895	$ 2,500,340	$ 202,720
Net Income (Loss)	2,197,109	0	2,197,109	0	0	0
Common Stock Issued Under Stock Plans	38,729	0	0	0	38,723	6
Dividends, Common Stock	(204,463)	0	(204,463)	0	0	0
Other Comprehensive Income (Loss)	(24,061)	0	0	(24,061)	0	0
Change in Treasury Stock - Stock Compensation Plans, Net	(32,214)	47,427	0	0	(79,641)	0
Excess Tax Benefit from Stock-Based Compensation	55,831	0	0	0	55,831	0
Restricted Stock and Restricted Stock Units, Net	(31,422)	(28,454)	0	0	(2,974)	6
Stock-Based Compensation Expenses	134,467	0	0	0	134,467	0
Treasury Stock Issued as Compensation	(281)	(414)	0	0	133	0
Balance at Dec. 31, 2013	$ 15,418,459	(15,263)	12,168,277	415,834	2,646,879	202,732
Common Stock Dividends Declared (in dollars per share)	$ 0.585
Net Income (Loss)	$ 2,915,487	0	2,915,487	0	0	0
Common Stock Issued Under Stock Plans	22,260	0	0	0	22,252	8
Dividends, Common Stock	(320,666)	0	(320,666)	0	0	0
Other Comprehensive Income (Loss)	(438,890)	0	0	(438,890)	0	0
Change in Treasury Stock - Stock Compensation Plans, Net	(127,432)	(96,962)	0	0	(30,470)	0
Excess Tax Benefit from Stock-Based Compensation	99,459	0	0	0	99,459	0
Restricted Stock and Restricted Stock Units, Net	0	43,091	0	0	(43,109)	18
Stock-Based Compensation Expenses	144,842	0	0	0	144,842	0
Common Stock Issued - Stock Split	0	0	0	0	(2,734)	2,734
Treasury Stock Issued as Compensation	(937)	(968)	0	0	31	0
Balance at Dec. 31, 2014	$ 17,712,582	(70,102)	14,763,098	(23,056)	2,837,150	205,492
Common Stock Dividends Declared (in dollars per share)	$ 0.670
Net Income (Loss)	$ (4,524,515)	0	(4,524,515)	0	0	0
Common Stock Issued Under Stock Plans	15,371	0	0	0	15,366	5
Dividends, Common Stock	(367,767)	0	(367,767)	0	0	0
Other Comprehensive Income (Loss)	(10,282)	0	0	(10,282)	0	0
Change in Treasury Stock - Stock Compensation Plans, Net	(41,471)	(129)	0	0	(41,342)	0
Excess Tax Benefit from Stock-Based Compensation	26,058	0	0	0	26,058	0
Restricted Stock and Restricted Stock Units, Net	0	44,334	0	0	(44,339)	5
Stock-Based Compensation Expenses	130,577	0	0	0	130,577	0
Treasury Stock Issued as Compensation	2,482	2,491	0	0	(9)	0
Balance at Dec. 31, 2015	$ 12,943,035	$ (23,406)	$ 9,870,816	$ (33,338)	$ 2,923,461	$ 205,502