XML 100 R72.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Goodwill and Intangible Assets - Impairment Analysis (Details) | Jan. 25, 2025 | Jan. 27, 2024 | Jan. 28, 2023
--- | --- | --- | ---
Terminal Growth Rate |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible asset, measurement input |  | 0.025 |
Discount Rate |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible asset, measurement input | 0.105 | 0.105 | 0.115
Minimum | Terminal Growth Rate |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible asset, measurement input | 0.02 |  | 0.02
Maximum | Terminal Growth Rate |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible asset, measurement input | 0.03 |  | 0.03

X
- Definition Indefinite-lived Intangible Asset, Measurement Input + References No definition available. + Details
Name: | dy_IndefinitelivedIntangibleAssetMeasurementInput
Namespace Prefix: | dy_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=dy_MeasurementInputTerminalGrowthRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |