XML 120 R125.htm IDEA: XBRL DOCUMENT v2.4.1.9
Operations by Geographic Location - Operations Within Geographic Region (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Geographic Information [Line Items]                      
Sales Revenue Services Net $ 1,064,045us-gaap_SalesRevenueServicesNet $ 1,061,013us-gaap_SalesRevenueServicesNet $ 1,035,476us-gaap_SalesRevenueServicesNet $ 1,005,288us-gaap_SalesRevenueServicesNet $ 1,003,940us-gaap_SalesRevenueServicesNet $ 932,727us-gaap_SalesRevenueServicesNet $ 944,238us-gaap_SalesRevenueServicesNet $ 927,435us-gaap_SalesRevenueServicesNet $ 4,165,822us-gaap_SalesRevenueServicesNet $ 3,808,340us-gaap_SalesRevenueServicesNet $ 3,692,298us-gaap_SalesRevenueServicesNet
Reimbursed expenses                 1,294,176us-gaap_ReimbursementRevenue 1,291,205us-gaap_ReimbursementRevenue 1,173,215us-gaap_ReimbursementRevenue
Total revenues                 5,459,998us-gaap_Revenues 5,099,545us-gaap_Revenues 4,865,513us-gaap_Revenues
Americas [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 1,783,999us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
1,532,974us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
1,469,558us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
Americas [Member] | United States [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 1,589,402us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
/ us-gaap_SubsegmentsAxis
= country_US
1,351,160us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
/ us-gaap_SubsegmentsAxis
= country_US
1,288,990us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
/ us-gaap_SubsegmentsAxis
= country_US
Americas [Member] | Other [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 194,597us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
181,814us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
180,568us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
Europe and Africa [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 1,523,538us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
1,501,504us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
1,430,917us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
Europe and Africa [Member] | Other [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 1,121,354us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
1,139,262us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
1,086,065us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
Europe and Africa [Member] | United Kingdom [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 402,184us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
/ us-gaap_SubsegmentsAxis
= country_GB
362,242us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
/ us-gaap_SubsegmentsAxis
= country_GB
344,852us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= q_EuropeAndAfricaMember
/ us-gaap_SubsegmentsAxis
= country_GB
Asia-Pacific [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 858,285us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
773,862us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
791,823us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
Asia-Pacific [Member] | Other [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 386,454us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
334,980us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
291,543us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
/ us-gaap_SubsegmentsAxis
= q_OtherStateMember
Asia-Pacific [Member] | Japan [Member]                      
Geographic Information [Line Items]                      
Sales Revenue Services Net                 $ 471,831us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
/ us-gaap_SubsegmentsAxis
= country_JP
$ 438,882us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
/ us-gaap_SubsegmentsAxis
= country_JP
$ 500,280us-gaap_SalesRevenueServicesNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
/ us-gaap_SubsegmentsAxis
= country_JP