XML 76 R63.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Debt Obligations - Long-term Debt Obligations (Parenthetical) (Detail) | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Minimum [Member] | Other Long Term Debt [Member] |  |
Debt Instrument [Line Items] |  |
Capital leases and Other long-term debt interest rates | 3.40% | 3.40%
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: |