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Shareholders' Equity (Summary of Vesting Activity Related to Share Based Options) (Details) - Progressive Waste Solutions Ltd. [Member]
9 Months Ended
Sep. 30, 2017
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Share settled (33,792)
Cash settled (322,785)
Forfeited (9,662)
Employee Stock Option [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Vested at December 31, 2016 601,395
Share based options vested in period 71,601
Share settled (33,792)
Cash settled (322,785)
Forfeited (9,662)
Vested at September 30, 2017 306,757