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Goodwill and Other Intangible Assets (Intangible Assets) - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2014	Aug. 31, 2014
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 3,236,398,000	$ 3,111,262,000		$ 1,289,398,000
Impairment in goodwill	$ 0	$ 0
Customer Relations And Supply Agreements [Member] | Weighted Average [Member]
Finite Lived Intangible Assets [Line Items]
Remaining weighted-average life	9 years
Favorable leasehold arrangements, net [Member] | Weighted Average [Member]
Finite Lived Intangible Assets [Line Items]
Remaining weighted-average life	11 years
Noncompete Agreements | Weighted Average [Member]
Finite Lived Intangible Assets [Line Items]
Remaining weighted-average life	7 years
Deferred Loan Origination Costs | Weighted Average [Member]
Finite Lived Intangible Assets [Line Items]
Remaining weighted-average life	3 years
Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Useful life			30 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

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+ References

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

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-Name Accounting Standards Codification
-Topic 230
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