XML 102 R87.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Segment Disclosures - Segment Revenue Per Service (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 30, 2018 | Sep. 30, 2018 | Jul. 01, 2018 | Apr. 01, 2018 | Dec. 31, 2017 | Oct. 01, 2017 | Jul. 02, 2017 | Apr. 02, 2017 | Dec. 30, 2018 | Dec. 31, 2017 | Jan. 01, 2017
Revenue from Services: |  |  |  |  |  |  |  |  |  |  |
Revenue from services | $ 1,414.7 | $ 1,342.4 | $ 1,386.9 | $ 1,369.9 | $ 1,422.3 | $ 1,328.8 | $ 1,333.6 | $ 1,289.7 | $ 5,513.9 | $ 5,374.4 |
Service |  |  |  |  |  |  |  |  |  |  |
Revenue from Services: |  |  |  |  |  |  |  |  |  |  |
Revenue from services |  |  |  |  |  |  |  |  | 5,513.9 | 5,374.4 | $ 5,276.8
Service | Reporting Segments | Americas Staffing |  |  |  |  |  |  |  |  |  |  |
Revenue from Services: |  |  |  |  |  |  |  |  |  |  |
Revenue from services |  |  |  |  |  |  |  |  | 2,417.7 | 2,345.9 | 2,191.6
Service | Reporting Segments | GTS |  |  |  |  |  |  |  |  |  |  |
Revenue from Services: |  |  |  |  |  |  |  |  |  |  |
Revenue from services |  |  |  |  |  |  |  |  | 1,997.4 | 1,998.9 | 1,977.1
Service | Reporting Segments | International Staffing |  |  |  |  |  |  |  |  |  |  |
Revenue from Services: |  |  |  |  |  |  |  |  |  |  |
Revenue from services |  |  |  |  |  |  |  |  | 1,116.6 | 1,048.2 | 1,127.1
Service | Less: Intersegment revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from Services: |  |  |  |  |  |  |  |  |  |  |
Revenue from services |  |  |  |  |  |  |  |  | $ (17.8) | $ (18.6) | $ (19.0)

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: 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=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: 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=115929826&loc=d3e8933-108599 Reference 4: 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=115929826&loc=d3e8736-108599 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kelya_AmericasStaffingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kelya_GTSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kelya_InternationalStaffingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |