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5. Commitments and Contingencies (Details) $ in Millions	3 Months Ended
	Oct. 28, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Loss Contingency Accrual, Provision	$ 4.0
Litigation Settlement, Amount Awarded from Other Party	4.0
Loss Contingency, Receivable	$ 4.0

X

- References

No definition available.

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Balance Type:	na
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- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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- Definition

Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12053-110248

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