Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ 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)	$ 0.585
Balance at Dec. 31, 2013	$ 15,418,459	$ (15,263)	$ 12,168,277	$ 415,834	$ 2,646,879	$ 202,732
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
Common Stock Dividends Declared (in dollars per share)	$ 0.670
Net Income (Loss)	$ (1,096,686)	$ 0	$ (1,096,686)	$ 0	$ 0	$ 0
Common Stock Issued for the Yates Transaction	2,397,887	0	0	0	2,397,635	252
Common Stock Issued Under Stock Plans	$ 16,397	$ 0	$ 0	$ 0	$ 16,388	$ 9
Dividends, Common Stock	(376,012)	0	376,012	0	0	0
Other Comprehensive Income (Loss)	14,328	0	0	14,328	0	0
Change in Treasury Stock - Stock Compensation Plans, Net	(75,226)	(48,208)	0	0	(27,018)	0
Excess Tax Benefit from Stock-Based Compensation	29,357	0	0	0	29,357	0
Restricted Stock and Restricted Stock Units, Net	0	47,502	0	0	(47,509)	7
Stock-Based Compensation Expenses	128,090	0	0	0	128,090	0
Treasury Stock Issued as Compensation	411	430	0	0	(19)	0
Balance at Dec. 31, 2016	$ 13,981,581	$ (23,682)	$ 8,398,118	$ (19,010)	$ 5,420,385	$ 205,770