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Outsourcing Services Agreement (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Outsourcing Services Agreement [Abstract]      
Outsourced corporate staff costs $ 15.1bcc_OutsourcedCorporateStaffCosts $ 15.5bcc_OutsourcedCorporateStaffCosts $ 15.0bcc_OutsourcedCorporateStaffCosts