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Shareholders' Equity (Summary of Vesting Activity Related to Restricted Share Units) (Details) - Progressive Waste Solutions Ltd. [Member]
9 Months Ended
Sep. 30, 2017
shares
Restricted Stock Units (RSUs) [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Vested at December 31, 2016 222,517
Vested over remaining service period 19,338
Cash settled (79,744)
Vested at September 30, 2017 162,111
Performance Shares [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Vested at December 31, 2016 35,727
Vested over remaining service period 8,322
Cash settled (37,437)
Vested at September 30, 2017 6,612