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Segment Disclosures - Segment Revenue Per Service (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Revenue from Services
Segment Revenue from Services	$ 1,349.1	$ 1,320.6
Less: Intersegment revenue
Revenue from Services
Segment Revenue from Services	(13.8)	(17.8)
Total Americas Commercial and PT | Reporting Segments
Revenue from Services
Segment Revenue from Services	885.7	874.2
Total EMEA Commercial and PT | Reporting Segments
Revenue from Services
Segment Revenue from Services	217.1	218.6
Total APAC Commercial and PT | Reporting Segments
Revenue from Services
Segment Revenue from Services	91.9	96.1
Americas Commercial | Reporting Segments
Revenue from Services
Segment Revenue from Services	648.6	641.4
Americas PT | Reporting Segments
Revenue from Services
Segment Revenue from Services	237.1	232.8
EMEA Commercial | Reporting Segments
Revenue from Services
Segment Revenue from Services	175.5	178.3
EMEA PT | Reporting Segments
Revenue from Services
Segment Revenue from Services	41.6	40.3
APAC Commercial | Reporting Segments
Revenue from Services
Segment Revenue from Services	82.8	85.6
APAC PT | Reporting Segments
Revenue from Services
Segment Revenue from Services	9.1	10.5
OCG | Reporting Segments
Revenue from Services
Segment Revenue from Services	$ 168.2	$ 149.5

X

- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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+ References

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