Commitment And Contingencies [Line Items]

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- Definition

Escrowed funds to cover multiple employer plans liability of acquired company.

+ References

No definition available.

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- Definition

Estimated cost to complete bonded projects.

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No definition available.

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- Definition

Length of transmission line.

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No definition available.

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- Definition

Long-term insurance claims.

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- Definition

Loss contingency damages sought value by plaintiff.

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- Definition

Multiemployer plan withdrawal obligation accrued.

+ References

No definition available.

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- Definition

Multiemployer plan withdrawal obligation amount suggested by plan different than amount recorded by company.

+ References

No definition available.

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- Definition

Multiemployer plan withdrawal obligation complete withdrawal.

+ References

No definition available.

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- Definition

Number Of Agencies

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No definition available.

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- Definition

Number of customers representing net position threshold.

+ References

No definition available.

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- Definition

Number of customers representing ten percent or more of consolidated revenues.

+ References

No definition available.

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- Definition

Outstanding Capital Commitments

+ References

No definition available.

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- Definition

Outstanding performance bonds amount.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.15(a))

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- Definition

The amount of indemnification assets (amounts to be reimbursed if and when certain assumed liabilities are paid) recognized at the acquisition date of a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

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-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

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-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

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- Definition

Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

+ References

No definition available.

+ Details

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- Definition

Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 40

-Section 50

-Paragraph 3

-Subparagraph (a),(b),(c)

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- Definition

Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

No definition available.

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- Definition

Cash receipts from customers during the current period which are usually for sales of goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (a)

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Commitments and Contingencies - Additional Information (Detail)		1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Oct. 09, 2013 USD ($)	Dec. 31, 2014 USD ($) Customer	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($) Customer km	Sep. 30, 2014 USD ($) Customer	Sep. 30, 2015 USD ($) Customer Agency km	Sep. 30, 2014 USD ($) Customer	Dec. 31, 2014 USD ($) Customer	Jul. 31, 2014 USD ($)	Dec. 31, 2011 USD ($)	Apr. 21, 2010 mi
Commitment And Contingencies [Line Items]
Outstanding capital commitment						$ 8,500,000
Rent expense related to operating leases				$ 52,300,000	$ 38,000,000	152,500,000	$ 115,200,000
Maximum guaranteed residual value				$ 480,700,000		$ 480,700,000
Number of customers representing ten percent or more of consolidated revenues \| Customer				0	0	0	0
Number of customers representing ten percent or more of net position \| Customer		0		0		0		0
Gross amount accrued for insurance claims		$ 170,200,000		$ 194,600,000		$ 194,600,000		$ 170,200,000
Long-term insurance claims		130,800,000		150,600,000		150,600,000		130,800,000
Related insurance recoveries/receivables		9,100,000		8,700,000		8,700,000		9,100,000
Related insurance recoveries/receivables included in prepaid expenses and other current assets		800,000		500,000		500,000		800,000
Related insurance recoveries/receivables included in other assets net		8,300,000		8,200,000		8,200,000		$ 8,300,000
Letters of credit and bank guarantees under the credit facility				318,500,000		318,500,000
Total amount of outstanding performance bonds				2,400,000,000		2,400,000,000
Estimated cost to complete bonded projects				786,000,000		786,000,000
Multi-employer plan withdrawal obligation									$ 39,600,000	$ 32,600,000
Multi-employer plan withdrawal obligation, amount suggested by Plan which is different than amount recorded by company	$ 6,900,000
Multi-employer plan withdrawal obligation complete withdrawal	4,800,000
Multi-employer plan withdrawal obligation accrued						2,400,000
Cash proceeds deposited in Escrow account	$ 2,100,000
Pre-acquisition non-U.S.tax obligations and indemnification asset amount recorded				11,400,000		11,400,000
Pre-acquisition non-U.S.tax obligations and indemnification liability amount recorded				$ 11,400,000		$ 11,400,000
Alberta Power Line [Member]
Commitment And Contingencies [Line Items]
Length of electrical transmission line to be constructed under contract \| km				500		500
Sunrise Powerlink Project [Member]
Commitment And Contingencies [Line Items]
Length of electrical transmission line to be constructed under contract \| mi											117
Proceeds from customers		$ 65,000,000
Scenario Forecast [Member]
Commitment And Contingencies [Line Items]
Outstanding capital commitment			$ 1,200,000
June 1, 2017 [Member]
Commitment And Contingencies [Line Items]
Outstanding capital commitment						$ 7,300,000
Vehicle Fleet Committed Capital [Member]
Commitment And Contingencies [Line Items]
Estimated committed capital remainder of current year				$ 5,300,000		5,300,000
Estimated committed capital in 2016				500,000		500,000
Minimum [Member]
Commitment And Contingencies [Line Items]
Multi-employer plan withdrawal obligation				$ 40,100,000		$ 40,100,000
Minimum [Member] \| Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Commitment And Contingencies [Line Items]
Concentration risk percentage				10.00%	10.00%	10.00%	10.00%
Minimum [Member] \| Net Position [Member] \| Customer Concentration Risk [Member]
Commitment And Contingencies [Line Items]
Concentration risk percentage						10.00%		10.00%
Maximum [Member]
Commitment And Contingencies [Line Items]
Multi-employer plan withdrawal obligation				$ 55,400,000		$ 55,400,000
Lorenzo Benton v Telecom Network Specialists Inc [Member]
Commitment And Contingencies [Line Items]
Number of staffing Agency \| Agency						29
Lorenzo Benton v Telecom Network Specialists Inc [Member] \| Class Damage [Member]
Commitment And Contingencies [Line Items]
Amount sought by plaintiff						$ 16,000,000
Lorenzo Benton v Telecom Network Specialists Inc [Member] \| Attorney Fees [Member]
Commitment And Contingencies [Line Items]
Amount sought by plaintiff						$ 5,000,000