XML 69 R53.htm IDEA: XBRL DOCUMENT
v3.20.4

Fee Revenue - Schedule of Disaggregation of Fee Revenue by Industry (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2021 | Jan. 31, 2020
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 477,880 | $ 527,979 | $ 1,262,552 | $ 1,528,354
Industrial |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 131,959 | $ 149,067 | $ 346,650 | $ 428,445
Fee Revenue, Percentage | 27.80% | 28.90% | 27.60% | 28.70%
Financial Services |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 84,078 | $ 84,778 | $ 232,723 | $ 256,178
Fee Revenue, Percentage | 17.70% | 16.50% | 18.50% | 17.20%
Life Sciences/Healthcare |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 92,588 | $ 89,217 | $ 241,451 | $ 260,567
Fee Revenue, Percentage | 19.50% | 17.30% | 19.30% | 17.50%
Consumer Goods |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 63,325 | $ 78,600 | $ 168,840 | $ 226,010
Fee Revenue, Percentage | 13.30% | 15.30% | 13.50% | 15.10%
Technology |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 74,774 | $ 79,870 | $ 188,789 | $ 221,172
Fee Revenue, Percentage | 15.70% | 15.50% | 15.00% | 14.80%
Education/Non-Profit/General |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 28,636 | $ 33,793 | $ 76,443 | $ 99,891
Fee Revenue, Percentage | 6.00% | 6.50% | 6.10% | 6.70%
Fee Revenue |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Fee Revenue | $ 475,360 | $ 515,325 | $ 1,254,896 | $ 1,492,263
Fee Revenue, Percentage | 100.00% | 100.00% | 100.00% | 100.00%

X
- Definition Revenue from contract with customer excluding assessed tax percentage. + References No definition available. + Details
Name: | kfy_RevenueFromContractWithCustomerExcludingAssessedTaxPercentage
Namespace Prefix: | kfy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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 No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=kfy_IndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_FinancialServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=kfy_LifeSciencesAndHealthcareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=kfy_ConsumerGoodsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_TechnologyServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=kfy_EducationNonProfitAndGeneralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |