Multiemployer Defined Benefit Pension Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012		Oct. 31, 2011	Oct. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contributions by the Company	$ 59,554		$ 57,880	$ 49,777
Building Service 32BJ Pension Fund
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contributions by the Company	14,439		13,720	12,065
Building Service 32BJ Pension Fund | Period 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	13-1879376 / 001
Pension Protection Act Zone Status	Red		Yellow
Pension Protection Act Zone Status Date	Jun. 30, 2011		Jun. 30, 2010
FIP/RP Status Pending/ Implemented	Implemented
Surcharge Imposed	Yes
Expiration Dates of Collective Bargaining Agreements	Apr. 20, 2014
Building Service 32BJ Pension Fund | Period 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration Dates of Collective Bargaining Agreements	Dec. 31, 2015
Central pension fund of the IUOE & Participating employers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contributions by the Company	9,176		8,339	7,631
Central pension fund of the IUOE & Participating employers | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	36-6052390 /001
Pension Protection Act Zone Status	Green		Green
Pension Protection Act Zone Status Date	Jan. 31, 2012		Jan. 31, 2011
FIP/RP Status Pending/ Implemented	NA	[1]
Surcharge Imposed	NA	[1]
Expiration Dates of Collective Bargaining Agreements	Feb. 28, 2013
Central pension fund of the IUOE & Participating employers | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration Dates of Collective Bargaining Agreements	Sep. 30, 2015
Local 25 SEIU & Participating Employers Pension Trust
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	36-6486542 / 001
Pension Protection Act Zone Status	Green		Green
Pension Protection Act Zone Status Date	Sep. 30, 2011		Sep. 30, 2010
FIP/RP Status Pending/ Implemented	NA	[1]
Surcharge Imposed	NA	[1]
Expiration Dates of Collective Bargaining Agreements	Apr. 05, 2015
Contributions by the Company	7,453		7,059	6,137
IUOE Stationary Engineers Local 39 Pension Fund
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	94-6118939 / 001
Pension Protection Act Zone Status	Green		Red
Pension Protection Act Zone Status Date	Dec. 31, 2011		Dec. 31, 2010
FIP/RP Status Pending/ Implemented	Implemented
Surcharge Imposed	No
Expiration Dates of Collective Bargaining Agreements	Aug. 31, 2017
Contributions by the Company	5,342		6,972	6,723
S.E.I.U National Industry Pension Fund
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	52-6148540 / 001
Pension Protection Act Zone Status	Red		Red
Pension Protection Act Zone Status Date	Dec. 31, 2011		Dec. 31, 2010
FIP/RP Status Pending/ Implemented	Implemented
Surcharge Imposed	Yes
Expiration Dates of Collective Bargaining Agreements	Jun. 30, 2016
Contributions by the Company	3,136		2,929	2,678
Local Sixty Eight Engineers Union Pension Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	51-0176618 / 001
Pension Protection Act Zone Status	Green		Red
Pension Protection Act Zone Status Date	Jun. 30, 2011		Jun. 30, 2010
FIP/RP Status Pending/ Implemented	NA	[1]
Surcharge Imposed	No
Expiration Dates of Collective Bargaining Agreements	Aug. 31, 2014
Contributions by the Company	3,426		3,435	3,671
Service Employees International Union Local 32BJ, District 36 Building Operators Pension Trust Fund
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	23-6546776 / 001
Pension Protection Act Zone Status	Yellow		Yellow
Pension Protection Act Zone Status Date	Dec. 31, 2012		Dec. 31, 2011
FIP/RP Status Pending/ Implemented	Implemented
Surcharge Imposed	NA	[1]
Expiration Dates of Collective Bargaining Agreements	Oct. 15, 2015
Contributions by the Company	2,175		2,414	2,297
IUOE Local 30 Pension Fund
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
EIN/PN	51-6045848 / 001
Pension Protection Act Zone Status	Green		Green
Pension Protection Act Zone Status Date	Dec. 31, 2011		Dec. 31, 2010
FIP/RP Status Pending/ Implemented	NA	[1]
Surcharge Imposed	NA	[1]
Expiration Dates of Collective Bargaining Agreements	Feb. 28, 2014
Contributions by the Company	1,459		1,230	1,127
Other Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contributions by the Company	$ 12,948		$ 11,782	$ 7,448

[1] Not Applicable