Accounting Estimates, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)

3 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Use of Estimates, Policy

Use of Estimates

We prepared our consolidated financial statements in conformity with GAAP which requires us to make estimates and assumptions affecting the amounts reported in the consolidated financial statements and accompanying notes. Changes in these estimates and assumptions may have a material impact on our consolidated financial statements and accompanying notes. Examples of estimates and assumptions include valuing assets and liabilities acquired through business combinations, determining the fair value of acquisition-related contingent considerations, valuing and estimating useful lives of intangible assets, recognizing uncertain tax positions, estimating tax valuation allowances on tax attribute carryforwards, determining the other-than-temporary impairments for strategic investments, deferring certain revenues and costs, valuing allowances for accounts receivable, estimating useful lives of property and equipment and estimating product warranties. Actual results could differ from these estimates.