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Segment Disclosures - Segment Revenue From Service (Details) - Service - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jul. 01, 2018 | Jun. 30, 2019 | Jul. 01, 2018
Revenue from Services |  |  |  |
Segment revenue from services | $ 1,367.5 | $ 1,386.9 | $ 2,750.1 | $ 2,756.8
Less: Intersegment revenue |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | (4.1) | (4.4) | (7.9) | (9.3)
Americas Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 597.6 | 604.0 | 1,224.1 | 1,208.3
Global Talent Solutions | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 505.9 | 500.7 | 1,006.9 | 986.5
International Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | $ 268.1 | $ 286.6 | $ 527.0 | $ 571.3

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