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Revenue, Properties and Outsourcing Assets by Geographic Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 3,015.1	$ 3,356.4	$ 3,456.5
Properties, net	153.8	168.7	174.7
Outsourcing assets, net	182.0	150.9	115.5
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,454.9	1,378.1	1,370.6
Properties, net	96.9	111.9	112.4
Outsourcing assets, net	119.4	99.7	56.2
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	375.8	435.4	414.0
Properties, net	18.8	22.0	24.7
Outsourcing assets, net	36.6	25.8	28.1
Other International
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,184.4	1,542.9	1,671.9
Properties, net	38.1	34.8	37.6
Outsourcing assets, net	$ 26.0	$ 25.4	$ 31.2

X

- Definition

Outsourcing assets include equipment and other assets, as well as software development cost and certain cost incurred upon initiation of customer contracts related to initial customer set up costs, used to provide services to outsourcing customers.

+ References

No definition available.

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph a
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 8
-Article 7

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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