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Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended | 7 Months Ended | 9 Months Ended | 84 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 31, 2023 | Sep. 30, 2023 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Jul. 31, 2024 | Dec. 31, 2016 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | Jul. 23, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of shares under employee share purchase plan |  |  | $ 2,303 |  | $ 2,183 | $ 2,067 |  | $ 1,841 |  |  | $ 4,486 | $ 3,908 |  |
Issuance of shares under employee share purchase plan, shares |  |  |  |  |  |  |  |  |  |  | 29,256 | 29,808 |  |
Common shares, shares issued |  |  | 258,062,086 |  |  |  |  |  |  |  | 258,062,086 |  | 257,659,921 |
Average daily trading volume during period |  |  |  |  |  |  |  |  | 240,359 |  |  |  |  |
Repurchase of common stock (shares) |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |
Aggregate cost of common stock repurchase |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum remaining number of shares available for repurchase |  |  | 12,901,981 |  |  |  |  |  |  |  | 12,901,981 |  |  |
Maximum number of shares authorized for repurchase |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,901,981
Share repurchase plan expiration date |  |  |  |  |  |  |  |  |  |  | Aug. 11, 2025 |  |  |
Daily repurchase of shares, maximum |  |  |  |  |  |  |  |  | 60,089 |  |  |  |  |
Daily Shares Repurchase (as percentage) |  |  | 25.00% |  |  |  |  |  |  |  | 25.00% |  |  |
Cash dividend per share | $ 0.285 | $ 0.255 | $ 0.285 |  |  | $ 0.255 |  |  |  |  | $ 0.855 | $ 0.765 |  |
Cash dividend per common share, increase | $ 0.03 |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends on common stock |  |  | $ 73,983 | $ 73,697 | $ 73,573 | $ 65,676 | $ 65,351 | $ 65,788 |  |  | $ 221,253 | $ 196,815 |  |
2020 Employee Share Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum percent of eligible compensation to purchase shares |  |  | 1.00% |  |  |  |  |  |  |  | 1.00% |  |  |
Maximum percent of eligible compensation to purchase shares |  |  | 10.00% |  |  |  |  |  |  |  | 10.00% |  |  |
Maximum number of share authorized to be issued under plan |  |  | 1,000,000 |  |  |  |  |  |  |  | 1,000,000 |  |  |
Minimum | 2020 Employee Share Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price percentage of closing price of common shares |  |  |  |  |  |  |  |  |  |  | 85.00% |  |  |
Maximum | 2020 Employee Share Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price percentage of closing price of common shares |  |  |  |  |  |  |  |  |  |  | 95.00% |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant-date fair value of award |  |  |  |  |  |  |  |  |  |  | $ 164.91 |  |  |
Units granted in period |  |  |  |  |  |  |  |  |  |  | 370,580 |  |  |
Vested deferred RSUs outstanding |  | 62,059 | 29,980 |  |  | 62,059 |  |  |  |  | 29,980 | 62,059 |  |
Restricted Stock Units (RSUs) | Progressive Waste Solutions Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units granted in period |  |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |
Performance Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant-date fair value of award |  |  |  |  |  |  |  |  |  |  | $ 138.29 |  |  |
Units granted in period |  |  |  |  |  |  |  |  |  |  | 113,166 |  |  |
Performance Shares | 2024 Performance-Based Restricted Share Units, Plan One |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period of award |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |
Performance period end date |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2026 |  |  |
Deferred Share Units |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant-date fair value of award |  |  |  |  |  |  |  |  |  |  | $ 168.71 |  |  |
Units granted in period |  |  |  |  |  |  |  |  |  |  | 3,746 |  |  |
Vested deferred RSUs outstanding |  |  | 20,418 |  |  |  |  |  |  |  | 20,418 |  | 30,481 |
Progressive Waste Solutions Ltd. | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested deferred RSUs outstanding |  |  | 50,062 |  |  |  |  |  |  |  | 50,062 |  | 51,812 |

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