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Leases - Narrative (Details) $ in Millions		3 Months Ended
	May 05, 2019 USD ($) renewal_option	May 05, 2019 USD ($) renewal_option
Lessee, Lease, Description [Line Items]
Lease expense		$ 11.0
Short-term and variable lease cost		$ 2.2
Weighted average remaining lease term	11 years 3 months 26 days	11 years 3 months 26 days
Weighted average discount rate	11.80%	11.80%
Operating lease payments		$ 8.3
Lease not yet commenced minimum lease payments	$ 111.1	$ 111.1
Lease not yet commenced term	16 years 1 month 6 days
Real Estate
Lessee, Lease, Description [Line Items]
Number of renewal options | renewal_option	3	3
Renewal term	5 years	5 years
Minimum | Real Estate
Lessee, Lease, Description [Line Items]
Lease term	5 years	5 years
Minimum | Equipment
Lessee, Lease, Description [Line Items]
Lease term	3 years	3 years
Maximum | Real Estate
Lessee, Lease, Description [Line Items]
Lease term	15 years	15 years
Maximum | Equipment
Lessee, Lease, Description [Line Items]
Lease term	5 years	5 years

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- Definition

Lessee, Operating Lease, Lease Not Yet Commenced, Liability

+ References

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- Definition

Lessee, Operating Lease, Number Of Renewal Options

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- Definition

Short-term And Variable Lease, Cost

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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- Definition

Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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