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Segment Disclosures - Segment Revenue Per Service (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2017 | Oct. 02, 2016 | Oct. 01, 2017 | Oct. 02, 2016
Revenue from Services |  |  |  |
Segment revenue from services | $ 1,328.8 | $ 1,247.8 | $ 3,952.1 | $ 3,972.4
Less: Intersegment revenue |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | (4.6) | (4.7) | (13.2) | (14.4)
Americas Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 554.8 | 518.2 | 1,703.5 | 1,614.7
Global Talent Solutions | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 503.0 | 495.0 | 1,495.8 | 1,486.5
International Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | $ 275.6 | $ 239.3 | $ 766.0 | $ 885.6

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