Subsequent Events	12 Months Ended
Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	18.SUBSEQUENT EVENTS Progressive Waste Merger On January 18, 2016, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Progressive Waste Solutions Ltd., a corporation organized under the laws of Ontario (“Progressive Waste”) and Water Merger Sub LLC, a Delaware limited liability company and wholly-owned subsidiary of Progressive Waste (“Merger Sub”). Subject to the terms and conditions of the Merger Agreement, Merger Sub will merge with and into Waste Connections (the “Merger”), with Waste Connections surviving the Merger as a wholly-owned subsidiary of Progressive Waste. The transaction is expected to close in the second quarter of 2016. Upon closing, the combined company will use the Waste Connections name and it is anticipated that its shares will trade on the New York Stock Exchange and the Toronto Stock Exchange. Upon completion of the transaction, the combined company will be led by the Company’s current management team. The Board of Directors for the combined company will include the five current members of the Company’s Board and two members from Progressive Waste’s current Board. Under the terms of the Merger Agreement, the Company’s stockholders will receive 2.076843 Progressive Waste shares for each Company share they own. Subject to the approval of Progressive Waste’s shareholders, Progressive Waste expects to implement immediately following the Merger, a share consolidation whereby every 2.076843 shares will be consolidated into one Progressive Waste share on the basis of 0.4815 (1 divided by the 2.076843 ratio above) of a share on a post-consolidation basis for each one share outstanding on a pre-consolidation basis. If the share consolidation is approved by Progressive Waste’s shareholders and effected, the Company’s stockholders will receive one share of the combined company for each existing Company share. Upon the completion of the transaction and regardless of whether or not the share consolidation occurs, the Company’s stockholders will own approximately 70% of the combined company, and Progressive Waste shareholders will own approximately 30%. The transaction is subject to customary closing conditions, including the approval of both companies’ shareholders, U.S. antitrust approval and the approval of the Toronto Stock Exchange. Quarterly Dividend On February 8, 2016, the Company announced that its Board of Directors approved a regular quarterly cash dividend of $0.145 per share on the Company’s common stock. The dividend will be paid on March 15, 2016, to stockholders of record on the close of business on March 1, 2016.

18.SUBSEQUENT EVENTS

Progressive Waste Merger

On January 18, 2016, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Progressive Waste Solutions Ltd., a corporation organized under the laws of Ontario (“Progressive Waste”) and Water Merger Sub LLC, a Delaware limited liability company and wholly-owned subsidiary of Progressive Waste (“Merger Sub”). Subject to the terms and conditions of the Merger Agreement, Merger Sub will merge with and into Waste Connections (the “Merger”), with Waste Connections surviving the Merger as a wholly-owned subsidiary of Progressive Waste.

The transaction is expected to close in the second quarter of 2016. Upon closing, the combined company will use the Waste Connections name and it is anticipated that its shares will trade on the New York Stock Exchange and the Toronto Stock Exchange. Upon completion of the transaction, the combined company will be led by the Company’s current management team. The Board of Directors for the combined company will include the five current members of the Company’s Board and two members from Progressive Waste’s current Board.

Under the terms of the Merger Agreement, the Company’s stockholders will receive 2.076843 Progressive Waste shares for each Company share they own. Subject to the approval of Progressive Waste’s shareholders, Progressive Waste expects to implement immediately following the Merger, a share consolidation whereby every 2.076843 shares will be consolidated into one Progressive Waste share on the basis of 0.4815 (1 divided by the 2.076843 ratio above) of a share on a post-consolidation basis for each one share outstanding on a pre-consolidation basis. If the share consolidation is approved by Progressive Waste’s shareholders and effected, the Company’s stockholders will receive one share of the combined company for each existing Company share. Upon the completion of the transaction and regardless of whether or not the share consolidation occurs, the Company’s stockholders will own approximately 70% of the combined company, and Progressive Waste shareholders will own approximately 30%.

The transaction is subject to customary closing conditions, including the approval of both companies’ shareholders, U.S. antitrust approval and the approval of the Toronto Stock Exchange.

Quarterly Dividend

On February 8, 2016, the Company announced that its Board of Directors approved a regular quarterly cash dividend of $0.145 per share on the Company’s common stock. The dividend will be paid on March 15, 2016, to stockholders of record on the close of business on March 1, 2016.