- カテゴリ： バーチャル提案
- 作成日： 2009/07/24 21:23:25
- ページ： 85
- Significant Accounting Policies and Estimates
The significant accounting policies described below had a material impact on the major accounting judgments and estimates by the KDDI Group that were used in the compilation of these consolidated financial statements. decreasing trend. Consequently, the book value decreased to the recoverable value, resulting in an impairment loss of ￥18.5 billion. The recoverable value of these assets for the Group was estimated based on the usage value, and calculated based on a future cashflow discount rate of 2.30%. The book value decreased to the recoverable value for idle properties, including certain domestic network infrastructure, resulting in an impairment loss of ￥1.6 billion. The recoverable value of these assets was estimated based on net marketable value. The Group also recorded an impairment loss of ￥4.3 billion on operating assets of certain subsidiaries.
n Depreciation Method for and Estimated Useful Lives of Fixed Assets
During FY 2009.3, the KDDI Group changed its depreciation method for machinery and equipment in the Mobile Business. The revisions pertained mainly to the estimated useful lives of machinery and equipment. The depreciation method for machinery and equipment in the Mobile Business has been changed from the straight-line method to the declining-balance method as of FY 2009.3. This change is intended to further utilize the advantages of a comprehensive communications company with both fixed-line and mobile service operations by standardizing depreciation and amortization methods between the two businesses in order to provide an optimal and cutting-edge communications environment through FMBC (fixed mobile and broadcast convergence). In the FY 2009.3 revisions to the Corporation Tax Law, the statutory useful life was reviewed, and the useful life of machinery and equipment was revised from six years to nine years. The KDDI Group comprehensively considered such factors as the usage environment for telecommunications equipment and other assets and technological progress in responding to this change, and decided to revise Group standards for estimated useful lives of fixed assets. In future, should there be rapid changes in the market, environment, or technology, or should new laws or regulations be enacted, the Group may revise estimated useful lives or the depreciation method after conducting a fair appraisal.
n Deferred Tax Assets
Deferred tax assets and liabilities are stated based on the statutory effective tax rate in recognition of any temporary differences between the carrying values of assets and liabilities and corresponding values listed in filings to tax authorities. Valuation allowances are stated against deferred tax assets, based on future likelihood. Evaluations of the necessity of recording such valuation allowances take into account projected future taxable income levels and utilizable tax planning.
n Retirement Benefits and Pension Obligations
Retirement benefits and pension obligations are calculated using certain fundamental parameters that are based on actuarial calculations. The key parameters used include the discount rate, projected mortality rates, forecast retirement rates, and projected rates of increase in wage and salary levels. The discount rate is computed based on the market yields of long-term Japanese government bonds. Projected mortality rates, forecast retirement rates, and projected rates of increase in wage and salary levels are all computed based on statistical values. The effects of any differences that arise between actual results and the initial assumptions, or of any systemic changes related to mergers, divestitures, or other developments, would by their nature be cumulative and subject to recognition on a regular basis over future fiscal periods. Hence, such changes and differences could potentially have a material effect on the future values of pensionrelated expenses and allowances. When recording retirement and severance benefits, the expected rate of return is set on conservative principles, based on the discount rate.
n Impairment of Fixed Assets
Impairment loss is calculated based on the grouping of assets into the smallest-possible units capable of generating cash flows that are largely independent of other assets or asset groups. During FY 2008.3, the utilization rate of certain assets, including domestic network infrastructure, declined, with book value decreasing to the recoverable value. KDDI therefore recorded an impairment loss of ￥18.7 billion. The recoverable value of these assets was estimated based on net marketable value. The Group also recorded impairment loss of ￥2.5 billion on certain idle properties held by subsidiaries. During FY 2009.3, the utilization rate of the current 800MHz band equipment, which will no longer be used from July 2012 and onward following the reorganization of the bandwidth, declined due to a drop in the number of compatible handsets. As a result, the book value decreased to the recoverable value, resulting in an impairment loss of ￥43.5 billion. After the introduction of the "Giga Value Plan,” HIKARI-one Home 100 equipment lost product appeal, and the number of subscriptions has been on a
KDDI CORPORATION Annual Report 2009