Consolidated Statements of Stockholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Balance	$ 19,364,188	$ 205,804	$ 5,658,794	$ (1,358)	$ 13,543,130	$ (42,182)
Net Income	635,426	0	0	0	635,426	0
Common Stock Issued Under Stock Plans	459	0	(1,235)	0	0	1,694
Dividends, Common Stock	(127,613)	0	0	0	(127,613)	0
Other Comprehensive Loss	(1,778)	0	0	(1,778)	0	0
Change in Treasury Stock - Stock Compensation Plans, Net	(6,248)	0	(5)	0	0	(6,243)
Restricted Stock and Restricted Stock Units, Net	0	3	(1,404)	0	0	1,401
Stock-Based Compensation Expenses	39,087	0	39,087	0	0	0
Treasury Stock Issued as Compensation	276	0	(40)	0	0	316
Balance	19,903,797	205,807	5,695,197	(2,869)	14,050,676	(45,014)
Cumulative Effect of Adoption of ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220)	0	0	0	267	(267)	0
Balance	21,640,716	205,822	5,817,475	(4,652)	15,648,604	(26,533)
Net Income	9,813	0	0	0	9,813	0
Common Stock Issued Under Stock Plans	(14)	0	(14)	0	0	0
Dividends, Common Stock	(218,275)	0	0	0	(218,275)	0
Other Comprehensive Loss	1,347	0	0	1,347	0	0
Change in Treasury Stock - Stock Compensation Plans, Net	(4,575)	0	(376)	0	0	(4,199)
Restricted Stock and Restricted Stock Units, Net	0	2	(3,956)	0	0	3,954
Stock-Based Compensation Expenses	40,072	0	40,072	0	0	0
Treasury Stock Issued as Compensation	1,591	0	(380)	0	0	1,971
Balance	$ 21,470,675	$ 205,824	$ 5,852,821	$ (3,305)	$ 15,440,142	$ (24,807)