XML 58 R48.htm IDEA: XBRL DOCUMENT v3.7.0.1

Debt Obligations - Long-term Debt Obligations (Parenthetical) (Detail)	Mar. 31, 2017	Dec. 31, 2016
Minimum [Member] | Other Long Term Debt [Member]
Debt Instrument [Line Items]
Capital leases and Other long-term debt interest rates	3.80%	3.80%
Minimum [Member] | Capital Leases [Member]
Debt Instrument [Line Items]
Capital leases and Other long-term debt interest rates	2.50%	2.50%
Maximum [Member] | Other Long Term Debt [Member]
Debt Instrument [Line Items]
Capital leases and Other long-term debt interest rates	4.30%	4.30%
Maximum [Member] | Capital Leases [Member]
Debt Instrument [Line Items]
Capital leases and Other long-term debt interest rates	6.20%	6.20%

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=pwr_OtherLongTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CapitalLeaseObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: