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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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