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Segment Reporting (Reconciliation of Primary Measure of Segment Profitability to Income before Income Tax Provision) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment EBITDA	$ 1,884,950	$ 1,631,550	$ 1,643,644
Depreciation	(673,730)	(621,102)	(618,396)
Amortization of intangibles	(139,279)	(131,302)	(125,522)
Impairments and other operating items	(32,316)	(466,718)	(61,948)
Interest expense	(162,796)	(162,375)	(147,368)
Interest income	2,916	5,253	9,777
Other income (expense), net	6,285	(1,392)	5,704
Loss on early extinguishment of debt	(115,288)
Income before income tax provision	770,742	253,914	705,891
Operating Segments [Member]
Segment EBITDA	1,904,546	1,646,833	1,659,082
Southern [Member]
Segment EBITDA	394,982	369,445	441,425
Eastern [Member]
Segment EBITDA	404,493	343,446	330,578
Eastern [Member] | Operating Segments [Member]
Segment EBITDA	404,493
Western [Member]
Segment EBITDA	405,778	364,790	338,563
Western [Member] | Operating Segments [Member]
Segment EBITDA	405,778
Canada Segment [Member]
Segment EBITDA	339,859	256,119	256,405
Canada Segment [Member] | Operating Segments [Member]
Segment EBITDA	339,859
Central [Member]
Segment EBITDA	359,434	313,033	292,111
Central [Member] | Operating Segments [Member]
Segment EBITDA	359,434
Corporate [Member]
Segment EBITDA	$ (19,596)	$ (15,283)	$ (15,438)

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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