Income Taxes Income Taxes (Unrecognized Tax Benefits) Details (Details) (USD $)	12 Months Ended
	Jan. 27, 2013	Jan. 29, 2012	Jan. 30, 2011
Income Tax Reconciliation, Tax Contingencies [Abstract]
Balance at beginning of period	$ 138,262,000	$ 121,034,000	$ 109,765,000
Increases in tax positions for prior years	18,800,000	385,000	0
Decreases in tax positions for prior years	(304,000)	(293,000)	(3,585,000)
Increases in tax positions for current year	67,764,000	22,181,000	18,628,000
Settlements	0	0	(358,000)
Lapse in statute of limitations	(3,979,000)	(5,045,000)	(3,416,000)
Balance at end of period	220,543,000	138,262,000	121,034,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	11,300,000	9,500,000	11,200,000
Unrecognized tax benefit (non current)	104,000,000
Accrued Income Taxes, Noncurrent	$ 115,267,000	$ 63,007,000