Segment Disclosure

3 Months Ended

Jan. 31, 2012

Segment Disclosure [Abstract]

Segment Disclosure

Note 13. Segment Disclosure

ASC 280, Segment Reporting, requires disclosures of certain information regarding operating segments, products and services, geographic areas of operation and major customers. Segment reporting is based upon the "management approach," i.e., how management organizes the Company's operating segments for which separate financial information is (1) available and (2) evaluated regularly by the Chief Operating Decision Maker (CODM) in deciding how to allocate resources and in assessing performance. Synopsys' CODMs are the Company's Chief Executive Officer and Chief Operating Officer.

The Company provides software and hardware products and consulting services in the EDA software industry. The Company operates in a single segment. In making operating decisions, the CODMs primarily consider consolidated financial information, accompanied by disaggregated information about revenues by geographic region. Specifically, the CODMs consider where individual "seats" or licenses of the Company's products are used in allocating revenue to particular geographic areas. Revenue is defined as revenues from external customers. Goodwill is not allocated since the Company operates in one reportable operating segment.

The following table presents the revenues related to operations by geographic areas:

	Three Months Ended January  31,
	2012		2011
	(in thousands)
Revenue:
United States	$	197,682	$	166,700
Europe		54,616		49,329
Japan		77,121		66,601
Asia Pacific and Other		96,077		82,014
Consolidated	$	425,496	$	364,644

Geographic revenue data for multi-region, multi-product transactions reflect internal allocations and is therefore subject to certain assumptions and to the Company's methodology.

One customer accounted for 10.6% and 10.9% of the Company's unaudited condensed consolidated revenue in the three months ended January 31, 2012 and 2011, respectively.