Description of Business and Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation — The Condensed Consolidated Financial Statements of the Company have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) and, in the opinion of management, include all adjustments necessary for a fair presentation of the results of operations, other comprehensive income, financial position, and cash flows for each period presented.

The adjustments referred to above are of a normal and recurring nature. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to SEC rules and regulations for interim reporting.

The Condensed Consolidated Balance Sheet as of December 31, 2012 was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. These Condensed Consolidated Financial Statements should be read in conjunction with the Company’s 2012 Annual Report on Form 10-K. Operating results for the three months ended March 31, 2013 are not necessarily indicative of the results expected for the full year or any other interim period.

Use of Estimates

Use of Estimates — Preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported. Actual results could differ from those estimates. In the normal course of business, the Company is subject to various regulatory and tax proceedings, lawsuits, claims, and other matters. The Company believes adequate provision has been made for all such asserted and unasserted claims in accordance with U.S. GAAP. Such matters are subject to many uncertainties and outcomes that are not predictable with assurance.

Investment in CyrusOne

Investment in CyrusOne - We have significant influence over CyrusOne but do not control its operations. As a result, our ownership in CyrusOne is accounted for as an equity method investment, and we recognize our proportionate share of CyrusOne's net income or loss as nonoperating income or expense in our consolidated statement of operations. Dividends from CyrusOne are recognized as a reduction of our investment. In the three months ended March 31, 2013, we consolidated CyrusOne's operating results for the period January 1, 2013 to January 23, 2013, and recognized our proportionate share of CyrusOne's net loss under the equity investment method for the period January 24, 2013 to March 31, 2013.

Property, Plant and Equipment

Property, Plant and Equipment — Property, plant and equipment is stated at original cost and presented net of accumulated depreciation and impairment losses. Depreciation expense is generally calculated using either the group depreciation method or the straight-line method. In connection with our ongoing review of the estimated remaining useful lives of property, plant and equipment, we shortened the estimated useful lives assigned to wireless network software to three years.  This change resulted from smartphone-driven technology upgrades, enhancements and projected retirements. For the three months ended March 31, 2013, the increase in depreciation expense associated with this change in estimate amounted to $8.5 million ($5.1 million net of tax) and increased basic and diluted loss per share by approximately $0.03 per share.

Income Taxes

Income Taxes — The Company’s income tax provision for interim periods is determined through the use of an estimated annual effective tax rate applied to year-to-date ordinary income, as well as the tax effects associated with discrete items.

Recently Issued Accounting Standards

Recently Issued Accounting Standards — In February 2013, the Financial Accounting Standards Board amended the guidance in Accounting Standards Codification 220 on comprehensive income. The new guidance requires additional information to be disclosed about the amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. generally accepted accounting principles to be reclassified in their entirety to net income. For other amounts that are not required under U.S. generally accepted accounting principles to be reclassified in their entirety to net income, cross references to other disclosures will be required. We adopted this new guidance beginning with our interim financial statements for the three months ended March 31, 2013. See Note 9 for our disclosures.

Earnings Per Share

Basic earnings per common share (“EPS”) is based upon the weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that would occur upon issuance of common shares for awards under stock-based compensation plans, exercise of warrants or conversion of preferred stock, but only to the extent that they are considered dilutive.

Fair Value Measurement

The fair value of our investment in CyrusOne was based on the closing market price of CyrusOne's common stock on March 31, 2013. This fair value measurement is considered Level 1 of the fair value hierarchy.

The fair value of our long-term debt was based on closing or estimated market prices of the Company’s debt at March 31, 2013 and December 31, 2012, which is considered Level 2 of the fair value hierarchy.

On January 24, 2013, upon completion of the IPO of CyrusOne, we removed CyrusOne's other financing arrangements from our consolidated financial statements. As of December 31, 2012, the fair value of other financing arrangements was calculated using a discounted cash flow model that incorporates current borrowing rates for obligations of similar duration, which is considered Level 3 of the fair value hierarchy.