Nature of Business	9 Months Ended
Jul. 31, 2012
Nature of Business	1. Nature of Business ABM Industries Incorporated (“ABM”), through its subsidiaries (collectively, the “Company”), is a leading provider of end-to-end integrated facilities management services to commercial, governmental, industrial, institutional, residential, and retail facilities primarily throughout the United States. The Company’s comprehensive capabilities include expansive facility services, energy solutions, commercial cleaning, maintenance and repair, HVAC, electrical, landscaping, parking and security, provided through stand-alone or integrated solutions. The Company was reincorporated in Delaware on March 19, 1985, as the successor to a business founded in California in 1909.

Nature of Business

9 Months Ended

Jul. 31, 2012

1. Nature of Business

ABM Industries Incorporated (“ABM”), through its subsidiaries (collectively, the “Company”), is a leading provider of end-to-end integrated facilities management services to commercial, governmental, industrial, institutional, residential, and retail facilities primarily throughout the United States. The Company’s comprehensive capabilities include expansive facility services, energy solutions, commercial cleaning, maintenance and repair, HVAC, electrical, landscaping, parking and security, provided through stand-alone or integrated solutions. The Company was reincorporated in Delaware on March 19, 1985, as the successor to a business founded in California in 1909.