10-K Shareholders' Equity (Summary of Activity Related to Restricted Stock Units) (Details)	6 Months Ended
Jun. 30, 2023 $ / shares shares
Restricted Stock Units (RSUs) [Member]
Unvested shares
Outstanding, shares at beginning	955,999
Granted	411,181
Forfeited	(28,388)
Vested and issued	368,921
Outstanding at ending	62,201
Outstanding, shares at ending	969,871
Weighted-Average Grant Date Fair Value Per Share
Granted \| $ / shares	$ 133.61
Performance Shares [Member]
Unvested shares
Outstanding, shares at beginning	341,850
Granted	113,347
Vested and issued	195,665
Outstanding, shares at ending	259,532
Weighted-Average Grant Date Fair Value Per Share
Granted \| $ / shares	$ 133.83
Deferred Share Units [Member]
Unvested shares
Outstanding at beginning	26,536
Granted	3,945
Outstanding at ending	30,481
Weighted-Average Grant Date Fair Value Per Share
Granted \| $ / shares	$ 136.47
Progressive Waste Solutions Ltd. [Member] \| Restricted Stock Units (RSUs) [Member]
Unvested shares
Outstanding at beginning	57,829
Cash settled	(5,803)
Outstanding at ending	52,026

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Cash Settled In Period

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The number of equity-based instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

No definition available.

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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Rollforward [Abstract]

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Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Abstract]

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