Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Common Stock Held in Treasury [Member]	Total
Balance at Dec. 31, 2010	$ 202,542	$ 729,992	$ 440,071	$ 8,870,179	$ (11,152)	$ 10,231,632
Net Income	0	0	0	1,091,123	0	1,091,123
Common Stock Issued Under Stock Plans	10	35,903	0	0	0	35,913
Common Stock Dividends Declared	0	0	0	(171,957)	0	(171,957)
Other Comprehensive Income (Loss)	0	0	(38,325)	0	0	(38,325)
Change in Treasury Stock - Stock Compensation Plans, Net	0	(18,622)	0	0	(5,413)	(24,035)
Excess Tax Benefit from Stock-Based Compensation	0	25	0	0	0	25
Restricted Stock and Restricted Stock Units, Net	5	8,410	0	0	(8,415)	0
Stock-Based Compensation Expenses	0	128,205	0	0	0	128,205
Common Stock Sold	136	1,388,129	0	0	0	1,388,265
Treasury Stock Issued as Compensation	0	10	0	0	48	58
Balance at Dec. 31, 2011	202,693	2,272,052	401,746	9,789,345	(24,932)	12,640,904
Net Income	0	0	0	570,279	0	570,279
Common Stock Issued Under Stock Plans	21	83,197	0	0	0	83,218
Common Stock Dividends Declared	0	0	0	(183,993)	0	(183,993)
Other Comprehensive Income (Loss)	0	0	38,149	0	0	38,149
Change in Treasury Stock - Stock Compensation Plans, Net	0	(47,123)	0	0	(11,465)	(58,588)
Excess Tax Benefit from Stock-Based Compensation	0	67,035	0	0	0	67,035
Restricted Stock and Restricted Stock Units, Net	6	(2,364)	0	0	2,358	0
Stock-Based Compensation Expenses	0	127,504	0	0	0	127,504
Treasury Stock Issued as Compensation	0	39	0	0	217	256
Balance at Dec. 31, 2012	202,720	2,500,340	439,895	10,175,631	(33,822)	13,284,764
Net Income	0	0	0	2,197,109	0	2,197,109
Common Stock Issued Under Stock Plans	6	38,723	0	0	0	38,729
Common Stock Dividends Declared	0	0	0	(204,463)	0	(204,463)
Other Comprehensive Income (Loss)	0	0	(24,061)	0	0	(24,061)
Change in Treasury Stock - Stock Compensation Plans, Net	0	(79,641)	0	0	47,427	(32,214)
Excess Tax Benefit from Stock-Based Compensation	0	55,831	0	0	0	55,831
Restricted Stock and Restricted Stock Units, Net	6	(2,974)	0	0	(28,454)	(31,422)
Stock-Based Compensation Expenses	0	134,467	0	0	0	134,467
Treasury Stock Issued as Compensation	0	133	0	0	(414)	(281)
Balance at Dec. 31, 2013	$ 202,732	$ 2,646,879	$ 415,834	$ 12,168,277	$ (15,263)	$ 15,418,459