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Segment Disclosures - Summary of Revenue From Services by Geographic Area (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
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Jan. 01, 2017 | Oct. 02, 2016 | Jul. 03, 2016 | Apr. 03, 2016 | Jan. 03, 2016 | [1] | Sep. 27, 2015 | Jun. 28, 2015 | Mar. 29, 2015 | Jan. 01, 2017 | Jan. 03, 2016 | Dec. 28, 2014
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue from services | $ 1,304.4 | $ 1,247.8 | $ 1,375.5 | $ 1,349.1 | $ 1,461.6 | $ 1,351.0 | $ 1,385.0 | $ 1,320.6 | $ 5,276.8 | $ 5,518.2 | [2] | $ 5,562.7
United States |  |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue from services |  |  |  |  |  |  |  |  | 3,722.5 | 3,705.2 |  | 3,535.8
International |  |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue from services |  |  |  |  |  |  |  |  | $ 1,554.3 | $ 1,813.0 |  | $ 2,026.9
[1] | Fourth Quarter 2015 included 14 weeks.
[2] | Fiscal year included 53 weeks.

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- 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 + Details
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