Guarantees (Details) (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Oct. 30, 2011 | Oct. 31, 2010 | Oct. 30, 2011 | Oct. 31, 2010 | Jan. 30, 2011 | Jan. 31, 2010 | |||||||||
| Notes to financial statements [Abstract] | ||||||||||||||
| Net Warranty charge | $ 193,900,000 | $ 282,000,000 | ||||||||||||
| Net warranty charge against cost of revenue | 181,200,000 | |||||||||||||
| Net warranty charge against sales, general, and administrative expense | 12,700,000 | |||||||||||||
| Payments related to warranty accrual | 8,248,000 | 49,069,000 | 48,389,000 | 113,888,000 | ||||||||||
| Estimated product warranty liabilities | ||||||||||||||
| Balance at beginning of period | 53,818,000 | 203,689,000 | 107,896,000 | 92,655,000 | 92,655,000 | |||||||||
| Additions (1) | 2,010,000 | [1] | 1,363,000 | [1] | 4,994,000 | [1] | 192,461,000 | [1] | ||||||
| Deductions (2) | (12,119,000) | [2] | (54,386,000) | [2] | (69,181,000) | [2] | (134,450,000) | [2] | ||||||
| Balance at end of period | 43,709,000 | 150,666,000 | 43,709,000 | 150,666,000 | 107,896,000 | 92,655,000 | ||||||||
| Cumulative warranty charge | 475,900,000 | |||||||||||||
| Cumulative net warranty charge against cost of revenue | 466,400,000 | |||||||||||||
| Incremental repair and replacement costs for the weak die/packaging material set | $ 186,241,000 | |||||||||||||
| ||||||||||||||