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Deferred Costs	12 Months Ended
	Jan. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred Costs	Deferred Costs Deferred costs, which primarily consist of deferred sales commissions, were $264 million and $204 million as of January 31, 2019 and 2018, respectively. Amortization expense for the deferred costs was $71 million, $58 million, and $45 million for fiscal 2019, 2018, and 2017, respectively. There was no impairment loss in relation to the costs capitalized for the periods presented.

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- Definition

Sum of the carrying amounts of deferred costs that are expected to be recognized as a charge against earnings including current and noncurrent term.

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