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Employee Retirement Plans	12 Months Ended
Employee Retirement Plans	Jan. 28, 2018
Employee Retirement Plans [Abstract]
Pension and Other Postretirement Benefits Disclosure	Employee Retirement Plans We have a 401(k) retirement plan covering substantially all of our United States employees. Under the plan, participating employees may defer up to 80% of their pre-tax earnings, subject to the Internal Revenue Service annual contribution limits and we match a portion of the employee contributions. Our contribution expense for fiscal years 2018, 2017, and 2016 was $23 million, $12 million, and $8 million, respectively. We also have defined contribution retirement plans outside of the United States to which we contributed $25 million, $23 million, and $21 million for fiscal years 2018, 2017, and 2016, respectively.