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Segment Disclosures - Segment Revenue From Service (Details) - Service - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2018 | Jul. 02, 2017 | Jul. 01, 2018 | Jul. 02, 2017
Revenue from Services |  |  |  |
Segment revenue from services | $ 1,386.9 | $ 1,333.6 | $ 2,756.8 | $ 2,623.3
Less: Intersegment revenue |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | (4.4) | (4.3) | (9.3) | (8.6)
Americas Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 604.0 | 575.6 | 1,208.3 | 1,148.7
Global Talent Solutions | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 500.7 | 505.5 | 986.5 | 992.8
International Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | $ 286.6 | $ 256.8 | $ 571.3 | $ 490.4

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