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Income Taxes | 3 Months Ended
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Mar. 31, 2018
Income Tax Disclosure [Abstract] |
Income Taxes | Note 5 Income Taxes In December 2017, the Tax Act was signed into law. Following the guidance of the FASB’s Accounting Standards Update 2018-05, Income Taxes: Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, tax expense for the year ended December 31, 2017, included a provisional estimate for the impact of the Tax Act on U.S. Cellular’s 2017 depreciation deduction. Tax expense for the three months ended March 31, 2018, includes an income tax benefit of $3 million related to adjusting this provisional estimate. U.S. Cellular has not completed a full analysis of contracts and agreements related to fixed assets placed in service during 2017. U.S. Cellular expects any final adjustments to the provisional amounts to be recorded by the third quarter of 2018, which could be material to U.S. Cellular’s financial statements.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
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