Compensation Related Costs, General	12 Months Ended
Jan. 31, 2020
Compensation Related Costs [Abstract]
Employee Benefit Plans	Employee Benefit PlansThe Company has a 401(k) plan covering all eligible employees in the United States and a Registered Retirement Savings plan covering all eligible employees in Canada. Since January 1, 2006, the Company has been contributing to the plans. Total Company contributions during fiscal 2020, 2019 and 2018, were $127 million, $106 million and $93 million, respectively.

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-URI http://asc.fasb.org/topic&trid=2228938

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

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