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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2011
Commitments and Contingencies Disclosure [Abstract] 
Schedule of Future Minimum Rental Payments for Operating Leases
  Operating
  leases
  $’M
  _____________
2011110.1
2012135.6
2013126.9
2014125.0
2015120.2
2016118.0
Thereafter138.8
 1_____________
 1174.6
  _____________