Revenue, Properties and Outsourcing Assets by Geographic Segment (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 3,356.4us-gaap_Revenues	$ 3,456.5us-gaap_Revenues	$ 3,706.4us-gaap_Revenues
Properties, net	168.7us-gaap_PropertyPlantAndEquipmentNet	174.7us-gaap_PropertyPlantAndEquipmentNet	176.4us-gaap_PropertyPlantAndEquipmentNet
Outsourcing assets, net	150.9	115.5	126.3
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,378.1	1,370.6	1,455.0
Properties, net	111.9	112.4	112.7
Outsourcing assets, net	99.7	56.2	67.1
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	435.4	414.0	496.9
Properties, net	22.0	24.7	23.1
Outsourcing assets, net	25.8	28.1	30.3
Other International
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,542.9	1,671.9	1,754.5
Properties, net	34.8	37.6	40.6
Outsourcing assets, net	$ 25.4	$ 31.2	$ 28.9

Disclosure On Geographic Areas Long Lived Outsourcing Assets In Entitys Country Of Domicile

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Disclosure On Geographic Areas Long Lived Outsourcing Assets In Foreign Countries

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Disclosure On Geographic Areas Long Lived Outsourcing Assets,Total

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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

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-Publisher FASB

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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).

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