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Segment Disclosures - Segment Revenue From Service (Details) - Service - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 28, 2020 | Jun. 30, 2019 | Jun. 28, 2020 | Jun. 30, 2019
Revenue from Services |  |  |  |
Segment revenue from services | $ 975.3 | $ 1,367.5 | $ 2,236.4 | $ 2,750.1
Less: Intersegment revenue |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | (2.9) | (4.1) | (6.0) | (7.9)
Americas Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 326.7 | 597.6 | 860.1 | 1,224.1
Global Talent Solutions | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | 466.9 | 505.9 | 970.1 | 1,006.9
International Staffing | Reporting Segments |  |  |  |
Revenue from Services |  |  |  |
Segment revenue from services | $ 184.6 | $ 268.1 | $ 412.2 | $ 527.0

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