Income Taxes Income Taxes (Tables)

12 Months Ended

Jan. 25, 2015

Income Taxes [Abstract]

Summary of Income Tax Contingencies [Table Text Block]

	January 25, 2015			January 26, 2014			January 27, 2013
	(In thousands)
Balance at beginning of period	$	237,738		$	220,543		$	138,262
Increases in tax positions for prior years	—			—			18,800
Decreases in tax positions for prior years	(871		)	(714		)	(304		)
Increases in tax positions for current year	22,865			22,787			67,764
Lapse in statute of limitations	(5,997		)	(4,878		)	(3,979		)
Balance at end of period	$	253,735		$	237,738		$	220,543

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Year Ended
	January 25, 2015			January 26, 2014			January 27, 2013
	(In thousands)
Tax expense computed at federal statutory rate	$	264,192		$	178,589		$	231,714
State income taxes, net of federal tax effect	681			1,608			1,048
Foreign tax rate differential	(119,786		)	(93,831		)	(123,626		)
U.S. federal R&D tax credit	(34,319		)	(30,155		)	(29,294		)
Stock-based compensation	4,332			8,900			11,876
Tax expense related to intercompany transaction	9,785			9,785			9,785
Other	(636		)	(4,632		)	(2,000		)
Income tax expense	$	124,249		$	70,264		$	99,503

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Year Ended
	January 25, 2015			January 26, 2014			January 27, 2013
	(In thousands)
Current income taxes:
Federal	$	7,995		$	7,896		$	7,506
State	818			1,234			1,016
Foreign	17,356			18,513			16,766
Total current	26,169			27,643			25,288
Deferred taxes:
Federal	83,827			17,070			28,143
State	—			—			—
Foreign	(1,258		)	(1,640		)	3,717
Total deferred	82,569			15,430			31,860
Charge in lieu of taxes attributable to employer stock option plans	15,511			27,191			42,355
Income tax expense	$	124,249		$	70,264		$	99,503

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Year Ended
	January 25, 2015		January 26, 2014		January 27, 2013
	(In thousands)
Domestic	$	173,865	$	79,136	$	99,422
Foreign	580,971		431,118		562,617
Income before income tax	$	754,836	$	510,254	$	662,039

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	January 25, 2015			January 26, 2014
	(In thousands)
Deferred tax assets:
Net operating loss carryforwards	$	72,322		$	81,629
Accruals and reserves, not currently deductible for tax purposes	109,123			131,932
Property, equipment and intangible assets	45,593			48,358
Research and other tax credit carryforwards	350,655			306,975
Stock-based compensation	29,850			33,135
Convertible debt	12,327			14,885
Gross deferred tax assets	619,870			616,914
Less valuation allowance	(260,985		)	(244,487		)
Total deferred tax assets	358,885			372,427
Deferred tax liabilities:
Acquired intangibles	(24,463		)	(33,244		)
Unremitted earnings of foreign subsidiaries	(500,031		)	(425,401		)
Gross deferred tax liabilities	(524,494		)	(458,645		)
Net deferred tax liability	$	(165,609	)	$	(86,218	)