Shareholders' Equity (Summary of Activity Related to Restricted Stock Units) (Detail)	6 Months Ended
Jun. 30, 2018 shares
Restricted Stock Units (RSUs) [Member]
Unvested shares
Outstanding, shares at December 31, 2017	1,042,014
Granted	496,217
Forfeited	(33,711)
Vested and issued	(468,423)
Vested and deferred	(3,653)
Outstanding at June 30, 2018	349,799
Outstanding, shares at June 30, 2018	1,032,444
Performance Shares [Member]
Unvested shares
Outstanding, shares at December 31, 2017	514,461
Granted	178,377
Forfeited	(34)
Vested and issued	(154,181)
Outstanding, shares at June 30, 2018	538,623
Progressive Waste Solutions Ltd. [Member] \| Restricted Stock Units (RSUs) [Member]
Unvested shares
Outstanding at December 31, 2017	158,510
Forfeited	(2,435)
Cash settled	(27,059)
Outstanding at June 30, 2018	129,016
Progressive Waste Solutions Ltd. [Member] \| Performance Shares [Member]
Unvested shares
Outstanding at December 31, 2017	55,602
Forfeited	(1,909)
Cash settled	(27,067)
Outstanding at June 30, 2018	26,626

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

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

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- Definition

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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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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