XML 46 R30.htm IDEA: XBRL DOCUMENT v3.19.1

401(k) Plan	12 Months Ended
	Jan. 31, 2019
Retirement Benefits [Abstract]
401(k) Plan	401(k) Plan We have a qualified defined contribution plan under Section 401(k) of the Internal Revenue Code covering eligible employees. In fiscal 2017, we began to match a certain portion of employee contributions up to a fixed maximum per employee. Our contributions to the plan were $28 million, $15 million, and $6 million in fiscal 2019, 2018, and 2017, respectively.

X

- References

No definition available.

+ Details

Name:	us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

+ Details

Name:	us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration