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Revenue, Properties and Outsourcing Assets by Geographic Segment (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | $ 3,456.5 | $ 3,706.4 | $ 3,853.8
Properties, net | 174.7 | 176.4 | 191.3
Outsourcing assets, net | 115.5 | 126.3 | 137.9
United States |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 1,370.6 | 1,455.0 | 1,577.9
Properties, net | 112.4 | 112.7 | 127.1
Outsourcing assets, net | 56.2 | 67.1 | 61.5
United Kingdom |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 414.0 | 496.9 | 408.7
Properties, net | 24.7 | 23.1 | 22.1
Outsourcing assets, net | 28.1 | 30.3 | 37.3
Other International |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 1,671.9 | 1,754.5 | 1,867.2
Properties, net | 37.6 | 40.6 | 42.1
Outsourcing assets, net | $ 31.2 | $ 28.9 | $ 39.1

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