Income Taxes	6 Months Ended
Apr. 30, 2011
Income Taxes [Abstract]
Income Taxes	12. Income Taxes The effective tax rates on income from continuing operations for the three months ended April 30, 2011 and 2010 were 38.3% and 39.5%, respectively. The effective tax rates on income from continuing operations for the six months ended April 30, 2011 and 2010 were 38.4% and 39.1%, respectively. At April 30, 2011, the Company had unrecognized tax benefits of $101.9 million, of which $101.7 million if recognized in the future would affect its effective tax rate. The Company includes interest and penalties related to unrecognized tax benefits in income tax expense. As of April 30, 2011, the Company had accrued interest related to uncertain tax positions of $0.9 million. The Company has recorded $1.0 million of the unrecognized tax benefits as a current liability. The Company’s major tax jurisdiction is the United States. ABM, OneSource Services, Inc. and the Linc C Corporation’s U.S. federal income tax returns remain open for examination for the periods ending October 31, 2006 through October 31, 2010, March 31, 2000 through November 14, 2007 and December 31, 2007 through December 31, 2010, respectively. ABM is currently being examined by the Internal Revenue Service for the tax years 2006 — 2008 and REEP, Inc. (Linc C Corporation) is currently being examined by the Internal Revenue Service for the tax years 2008 — 2009. The Company does business in all 50 states, significantly in California, Texas, and New York, as well as in various foreign jurisdictions. In major state jurisdictions, the tax years 2006 — 2010 remain open and subject to examination by the appropriate tax authorities. The Company is currently being examined by Illinois, Michigan, Utah, New Jersey, Massachusetts, New York, California, Texas, and Puerto Rico.

Income Taxes

6 Months Ended

Apr. 30, 2011

12. Income Taxes

The effective tax rates on income from continuing operations for the three months ended April 30, 2011 and 2010 were 38.3% and 39.5%, respectively. The effective tax rates on income from continuing operations for the six months ended April 30, 2011 and 2010 were 38.4% and 39.1%, respectively.

At April 30, 2011, the Company had unrecognized tax benefits of $101.9 million, of which $101.7 million if recognized in the future would affect its effective tax rate. The Company includes interest and penalties related to unrecognized tax benefits in income tax expense. As of April 30, 2011, the Company had accrued interest related to uncertain tax positions of $0.9 million. The Company has recorded $1.0 million of the unrecognized tax benefits as a current liability.

The Company’s major tax jurisdiction is the United States. ABM, OneSource Services, Inc. and the Linc C Corporation’s U.S. federal income tax returns remain open for examination for the periods ending October 31, 2006 through October 31, 2010, March 31, 2000 through November 14, 2007 and December 31, 2007 through December 31, 2010, respectively. ABM is currently being examined by the Internal Revenue Service for the tax years 2006 — 2008 and REEP, Inc. (Linc C Corporation) is currently being examined by the Internal Revenue Service for the tax years 2008 — 2009. The Company does business in all 50 states, significantly in California, Texas, and New York, as well as in various foreign jurisdictions. In major state jurisdictions, the tax years 2006 — 2010 remain open and subject to examination by the appropriate tax authorities. The Company is currently being examined by Illinois, Michigan, Utah, New Jersey, Massachusetts, New York, California, Texas, and Puerto Rico.