XML 25 R47.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Debt Obligations - Information on Borrowings under Current and Prior Credit Facility and Applicable Interest Rates (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Line of Credit Facility [Abstract] |  |  |  |
Maximum amount outstanding during the period | $ 330,473 | $ 83,410 | $ 330,473 | $ 83,410
Average daily amount outstanding under the credit facility | $ 171,638 | $ 23,940 | $ 132,213 | $ 11,983
Weighted-average interest rate | 2.01% | 2.67% | 2.13% | 2.67%

X
- Definition Long Term Debt Weighted Average Interest Rate During Period + References No definition available. + Details
Name: | pwr_LongTermDebtWeightedAverageInterestRateDuringPeriod
Namespace Prefix: | pwr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average amount borrowed under the credit facility during the period. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityAverageOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum amount borrowed under the credit facility at any time during the period. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration