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Shareholders' Equity (Summary of Activity Related to Restricted Stock Units) (Detail)	3 Months Ended
	Mar. 31, 2017 $ / shares shares
Restricted Stock Units (RSUs) [Member]
Unvested shares
Outstanding, shares at December 31, 2016	834,634
Granted	274,697
Forfeited	(4,345)
Vested and issued	(351,786)
Vested and unissued	(22,692)
Outstanding at March 31, 2017	237,141
Outstanding, shares at March 31, 2017	730,508
Weighted-Average Grant Date Fair Value Per Share
Granted | $ / shares	$ 85.51
Performance Shares [Member]
Unvested shares
Outstanding, shares at December 31, 2016	284,762
Granted	140,077
Vested and issued	(81,864)
Outstanding, shares at March 31, 2017	342,975
Weighted-Average Grant Date Fair Value Per Share
Granted | $ / shares	$ 86.23
Progressive Waste Solutions Ltd. [Member] | Restricted Stock Units (RSUs) [Member]
Unvested shares
Outstanding at December 31, 2016	179,489
Cash settled	(17,342)
Outstanding at March 31, 2017	162,147
Progressive Waste Solutions Ltd. [Member] | Performance Shares [Member]
Unvested shares
Outstanding at December 31, 2016	61,994
Cash settled	(5,304)
Outstanding at March 31, 2017	56,690
Deferred Compensation, Share-based Payments [Member]
Unvested shares
Outstanding at December 31, 2016	45,964
Granted	3,150
Cash settled	(2,400)
Outstanding at March 31, 2017	46,714

X

- Definition

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

+ 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)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- 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=6415400&loc=d3e5070-113901

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- Definition

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).

+ 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=6415400&loc=d3e5070-113901

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X

- 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=6415400&loc=d3e5070-113901

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- Definition

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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

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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 vested and issued during the reporting period.

+ References

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- Definition

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

+ References

No definition available.

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