10-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
(Mark One)
[x]	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2018
		OR
[ ]	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                                    to
Commission file number 001-09712

UNITED STATES CELLULAR CORPORATION
(Exact name of Registrant as specified in its charter)
Delaware			62-1147325
(State or other jurisdiction of incorporation or organization)			(IRS Employer Identification No.)
8410 West Bryn Mawr, Chicago, Illinois 60631
(Address of principal executive offices) (Zip code)
Registrant’s telephone number, including area code: (773) 399-8900
					Yes	No
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.					[x]	[  ]
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).					[x]	[  ]
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company.  See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer	[  ]			Accelerated filer		[x]
Non-accelerated filer	[  ]	(Do not check if a smaller reporting company)		Smaller reporting company		[  ]
				Emerging growth company		[  ]
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.						[  ]
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).					[  ]	[x]
Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date.
Class			Outstanding at March 31, 2018
Common Shares, $1 par value			52,210,981 Shares
Series A Common Shares, $1 par value			33,005,877 Shares

United States Cellular Corporation
Quarterly Report on Form 10-Q
For the Period Ended March 31, 2018
Index		Page No.
	Management Discussion and Analysis of Financial Condition and Results of Operations	1
	Executive Overview	1
	Terms used by U.S. Cellular	4
	Operational Overview	5
	Financial Overview	7
	Liquidity and Capital Resources	10
	Consolidated Cash Flow Analysis	13
	Consolidated Balance Sheet Analysis	14
	Supplemental Information Relating to Non-GAAP Financial Measures	15
	Application of Critical Accounting Policies and Estimates	18
	Recent Accounting Pronouncements	18
	Regulatory Matters	18
	Private Securities Litigation Reform Act of 1995 Safe Harbor Cautionary Statement	19
	Risk Factors	21
	Quantitative and Qualitative Disclosures About Market Risk	21
	Financial Statements (Unaudited)	22
	Consolidated Statement of Operations	22
	Consolidated Statement of Cash Flows	23
	Consolidated Balance Sheet	24
	Consolidated Statement of Changes in Equity	26
	Notes to Consolidated Financial Statements	28
	Controls and Procedures	41
	Legal Proceedings	41
	Unregistered Sales of Equity Securities and Use of Proceeds	41
	Other Information	42
	Exhibits	43
	Form 10-Q Cross Reference Index	44
	Signatures	45

United States Cellular Corporation Management’s Discussion and Analysis of Financial Condition and Results of Operations

Executive Overview

The following discussion and analysiscompares United States Cellular Corporation’s (U.S. Cellular) financial results for the threemonths ended March 31, 2018,to the threemonths ended March 31, 2017.  It should be read in conjunction with U.S. Cellular’s interim consolidated financial statements and notes included herein, and with the description of U.S. Cellular’s business, its audited consolidated financial statements and Management's Discussion and Analysis(MD&A) of Financial Condition and Results of Operations included in U.S. Cellular’s Annual Report on Form 10-K (Form 10-K) for the year ended December 31, 2017.  Certain numbers included herein are rounded to millions for ease of presentation; however, calculated amounts and percentages are determined using the unrounded numbers. 

This report contains statements that are not based on historical facts, including the words “believes,” “anticipates,” “estimates,” “expects,” “plans,” “intends,” “projects,” and similar expressions.  These statements constitute and represent “forward looking statements” as this term is defined in the Private Securities Litigation Reform Act of 1995.  Such forward looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results, events or developments to be significantly different from any future results, events or developments expressed or implied by such forward looking statements. See Private Securities Litigation Reform Act of 1995 Safe Harbor Cautionary Statement for additional information.

U.S. Cellular uses certain “non-GAAP financial measures” and each such measure is identified in the MD&A.  A discussion of the reason U.S. Cellular determines these metrics to be useful and a reconciliation of these measures to their most directly comparable measures determined in accordance with accounting principles generally accepted in the United States of America (GAAP) are included in the Supplemental Information Relating to Non-GAAP Financial Measures section within the MD&A of this Form 10-Q Report.

1

General

U.S. Cellularowns, operates, and invests in wireless markets throughout the United States. U.S. Cellular is an 83%-owned subsidiary of Telephone and Data Systems, Inc. (TDS).  U.S. Cellular’s strategy is to attract and retain wireless customers through a value proposition comprised of a high-quality network, outstanding customer service, and competitive devices, plans, and pricing, all provided with a local focus.

OPERATIONS

• Serves customers with approximately 5.1 million connections including 4.5million postpaid, 0.5 million prepaid and 0.1 million reseller and other connections
• Operates in 22 states
• Employs approximately 5,900associates
• 6,473 cell sites including 4,099owned towers in service

2

U.S. Cellular Mission and Strategy

U.S. Cellular’s mission is to provide exceptional wireless communication services which enhance consumers’ lives, increase the competitiveness of local businesses, and improve the efficiency of government operations in the mid-sized and rural markets served.

In 2018, U.S. Cellular continues to execute on its strategies to protect its current customer base, grow revenues, drive improvements in the overall cost structure, and invest in its network and online platforms.  Strategic efforts include:

• U.S. Cellular continues to offer economical and competitively priced service plans and devices to its customers, and is focused on increasing revenues from sales of related products such as accessories and device protection plans and from new services such as fixed wireless broadband.  In addition, U.S. Cellular is focused on expanding its solutions available to business and government customers, including a growing suite of connected machine-to-machine solutions and software applications across various categories. 
• U.S. Cellular continues to devote efforts to enhance its network capabilities.  VoLTE technology has been launched successfully in Iowa and Wisconsin, and deployments in several additional operating markets will occur later this year.  VoLTE technology allows customers to utilize a 4G LTE network for both voice and data services, andoffers enhanced services such ashigh definition voice and simultaneous voice and data sessions. In addition, the deployment of VoLTE technology expands U.S. Cellular’s ability to offer roaming services to other wireless carriers. 
• U.S. Cellular is committed to continuous technology innovation as demonstrated by its ongoing evaluation of 5G technology.  U.S. Cellular has successfully tested 5G technology in both indoor and outdoor environments and is currently engaged in efforts related to the development of 5G standards and identifying potential use cases for the technology. When deployed commercially, 5G technology is expected to help address customers’ growing demand for data services as well as create opportunities for new services requiring high speed and reliability as well as low latency.
• U.S.Cellular assesses its existing wireless interests on an ongoing basis with a goal of improving the competitiveness of its operations and maximizing its long-term return on capital.  As part of this strategy, U.S.Cellular actively seeks attractive opportunities to acquire wireless spectrum, including pursuant to FCC auctions.

3

Terms Used by U.S. Cellular

The following is a list of definitions of certain industry terms that are used throughout this document:

• 4G LTE – fourth generation Long-Term Evolution which is a wireless broadband technology.
• 5G – fifth generation wireless broadband technology.
• Account – represents an individual or business financially responsible for one or multiple associated connections.  An account may include a variety oftypes of connections such as handsets and connected devices.
• ASU 2014-09– the Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers,including any subsequent modifications to such guidance.  This ASU replaces existing revenue recognition rules with a single comprehensive model to use in accounting for revenue arising from contracts with customers.
• Churn Rate – represents the percentage of the connections that disconnect service each month. These rates represent the average monthly churnrate for each respective period.
• Connections – individual lines of service associated with each device activated by a customer. This includes smartphones, feature phones, tablets,modems, hotspots, and machine-to-machine devices.
• Connected Devices – non-handset devices that connect directly to the U.S. Cellular network.  Connected devices include products such as tablets, modems, and hotspots.
• EBITDA – refers to earnings before interest, taxes, depreciation, amortization and accretion and is used in the non-GAAP metric Adjusted EBITDA throughout this document.  See Supplemental Information Relating to Non-GAAP Financial Measures within this MD&A for additional information.
• Eligible Telecommunications Carrier (ETC) – designation by states for providing specified services in “high cost” areas which enables participation in universal service support mechanisms.
• Free Cash Flow – non-GAAP metric defined as Cash flows from operating activities less Cash paid for additions to property, plant and equipment.
• Gross Additions – represents the total number of new connections added during the period, without regard to connections that were terminated duringthat period.
• Machine-to-Machine or M2M – technology that involves the transmission of data between networked devices, as well as the performance of actions bydevices without human intervention. U.S. Cellular sells and supports M2M solutions to customers, provides connectivity for M2M solutions via the U.S.Cellular network, and has agreements with device manufacturers and software developers which offer M2M solutions.
• Net Additions – represents the total number of new connections added during the period, net of connections that were terminated during that period.
• OIBDA – refers to operating income before depreciation, amortization and accretion and is used in the non-GAAP metric Adjusted OIBDA throughout this document.  See Supplemental Information Relating to Non-GAAP Financial Measures within this MD&A for additional information.
• Postpaid Average Billings per Account (Postpaid ABPA) – non-GAAP metric which is calculated by dividing total postpaid service revenues plusequipment installment plan billings by the average number of postpaid accounts and by the number of months in the period.
• Postpaid Average Billings per User (Postpaid ABPU) – non-GAAP metric which is calculated by dividing total postpaid service revenues plus equipmentinstallment plan billings by the average number of postpaid connections and by the number of months in the period.
• Postpaid Average Revenue per Account (Postpaid ARPA) – metric which is calculated by dividing total postpaid service revenues by the averagenumber of postpaid accounts and by the number of months in the period.
• Postpaid Average Revenue per User (Postpaid ARPU) – metric which is calculated by dividing total postpaid service revenues by the average number ofpostpaid connections and by the number of months in the period.
• Retail Connections – the sum of postpaid connections and prepaid connections.
• Tax Act – refers to comprehensive federal tax legislation enacted on December 22, 2017, which made broad and complex changes to the U.S. tax code.  Now titled H.R.1, the Tax Act was originally identified as the Tax Cuts and Jobs Act of 2017.
• Universal Service Fund (USF) – a system of telecommunications collected fees and support payments managed by the FCC intended to promoteuniversal access to telecommunications services in the United States.
• VoLTE – Voice over Long-Term Evolution is a technology specification that defines the standards and procedures for delivering voice communicationsand related services over 4G LTE networks.

4

Operational Overview

	As ofMarch 31,			2018	2017
	Retail Connections – End of Period
			Postpaid	4,481,000	4,455,000
			Prepaid	525,000	480,000
			Total	5,006,000	4,935,000
	Quarter Ended March 31,			2018	2017
	Postpaid Activity:
		Gross Additions		129,000	146,000
		Net Losses		(37,000)	(27,000)
		Churn		1.23%	1.29%

Postpaid handset gross additions for the three months ended March 31, 2018, were 96,000, slightly higher than in the same period last year.  In addition, postpaid handset churn improved year over year, from 1.08% to 0.97%.  As a result, the net loss on postpaid handsets for the three months ended March 31, 2018, of 16,000 was significantly reduced from the net loss in the prior year period.

Total postpaid net losses increased for the three months ended March 31, 2018, when compared to the same period last year, due to net losses forconnected devices, which reflected both lower tablet gross additions and an increase in tablet churn.  The decline in tablet gross additions reflects U.S. Cellular‘sdecision to curtail promotions of heavily discounted tablets. 

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Postpaid Revenue

		Three Months Ended
		March 31,
		2018		2017
Average Revenue Per User (ARPU)		$	44.34	$	45.42
Average Billings Per User (ABPU)1		$	57.10	$	55.82
Average Revenue Per Account (ARPA)		$	118.22	$	121.88
Average Billings Per Account (ABPA)1		$	152.26	$	149.78
1	Postpaid ABPU and Postpaid ABPA are non-GAAP financial measures.  Refer to Supplemental Information Relating to Non-GAAP Financial Measures within this MD&A for a reconciliation of these measures.

On January 1, 2018, U.S. Cellular adopted the provisions of ASU 2014-09, using a modified retrospective method.  Under this method, the new accounting standard is applied only to the most recent period presented, recognizing the cumulative effect of the accounting change as an adjustment to retained earnings at January 1, 2018.  See Note 2 — Revenue Recognition in the Notes to Consolidated Financial Statements for additional details. 

Postpaid ARPU and Postpaid ARPA decreased for the three months ended March 31, 2018, when compared to the same period last year, reflecting industry-wide price competition resulting in overall price reductions on plan offerings as well as the impact of adopting the provisions of ASU 2014-09, as discussed above.  Application of the new accounting standard had the impact of reducing ARPU and ARPA for the three months ended March 31, 2018, by $0.53 and $1.11, respectively.  Such factors were partially offset by increases in regulatory cost recovery and Device Protection plan revenues.

Under equipment installment plans, customers pay for their wireless devices in installments over a period of time.  In order to show the trend in estimated cash collections from postpaid customer billings for both service and equipment, U.S. Cellular has presented Postpaid ABPU and Postpaid ABPA, which are calculated as Postpaid ARPU and Postpaid ARPA plus average monthly equipment installment plan billings per connection and account, respectively.

Equipment installment plan billings increased for the three months ended March 31, 2018, due mainly to increased penetration of equipment installment plans.Postpaid ABPU and ABPAincreased for the three months ended March 31, 2018, as the increase in equipment installment plan billings more than offset the decline in Postpaid ARPU and ARPA discussed above.  

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Financial Overview

		Three Months Ended
		March 31,
						2018 vs.
		2018¹		2017		2017
(Dollars in millions)
Retail service		$	649	$	657	(1)%
Inbound roaming			27		27	3%
Other			48		62	(23)%
	Service revenues		724		746	(3)%
Equipment sales			218		190	14%
	Total operating revenues		942		936	1%
System operations (excluding Depreciation, amortizationand accretion reported below)			179		175	2%
Cost of equipment sold			219		228	(4)%
Selling, general and administrative			326		339	(4)%
Depreciation, amortizationand accretion			159		153	3%
(Gain) loss on asset disposals, net			1		4	(62)%
(Gain) loss on license salesand exchanges, net			(7)		(17)	61%
	Total operating expenses		877		882	(1)%
Operating income		$	65	$	54	21%
Net income		$	55	$	28	97%
Adjusted OIBDA (Non-GAAP)2		$	218	$	194	13%
Adjusted EBITDA (Non-GAAP)2		$	259	$	229	13%
Capital expenditures		$	70	$	61	14%
1	As of January 1, 2018, U.S. Cellular adopted ASU 2014-09 using a modified retrospective approach.  Under this method, the new accounting standard is applied only to the most recent period presented.  See Note 2 — Revenue Recognition in the Notes to Consolidated Financial Statements for additional information.
2	Refer to Supplemental Information Relating to Non-GAAP Financial Measures within this MD&A for a reconciliation of this measure.

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Service revenues consist of: Retail Service – Charges for access, airtime, roaming, recovery of regulatory costs and value added services, including data services and products Inbound Roaming – Charges to other wireless carriers whose customers use U.S. Cellular’s wireless systems when roaming Other Service – Amounts received from the Federal USF and tower rental revenues.  Imputed interest on equipment installment plan contracts is included in 2017; however, it is not included in 2018 due to the impact of adopting the provisions of ASU 2014-09 Equipment revenues consist of: Sales of wireless devices and related accessories to new and existing customers, agents, and third-party distributors

Key components of changes in the statement of operations line items were as follows:

Total operating revenues

Service revenues decreased for the three months ended March 31, 2018, when compared to the same period last year, as a result of (i) the decline in Postpaid ARPU as previously discussed in the Operational Overview section; and (ii) the impact of adopting the provisions of ASU 2014-09. 

Federal USF revenue remained flat year over yearat $23 million.  See the Regulatory Matters section in this MD&A for a description of the FCC Mobility Fund II Order (MF2 Order) and its expected impacts on U.S. Cellular’s current Federal USF support.

Equipment sales revenues increased for the three months ended March 31, 2018, due to the impact of adopting the provisions of ASU 2014-09, an increase in the average revenue per device sold, a mix shift from feature phones and connected devices to higher end smartphone devices, andan increase in accessories revenues.  Such factors were partially offset by a decrease in the number of devices sold and a reduction in guarantee liability amortization for equipment installment contracts as a result of changes in plan offerings.

See Note 2 — Revenue Recognition in the Notes to Consolidated Financial Statements for additional details on the financial statement impact of ASU 2014-09.

System operations expenses

System operations expensesincreased for the three months ended March 31, 2018, due to higher maintenance, utility and cell site expenses largely reflecting increased cell site rent and tower maintenance and repair costs.  Such factors were partially offset by a decrease in roaming expenses primarily driven by lower data roaming rates, partially offset by increased data roaming usage.

Cost of equipment sold

Cost of equipment sold decreased for the three months ended March 31, 2018, mainly due to a decrease in the number of devices sold as well as the impact of adopting the provisions of ASU 2014-09.  Such factors were partially offset by increases due to a mix shift from feature phones and connected devices to higher cost smartphones, an increase in the average cost per device sold, and an increase in accessories cost.

Loss on equipment sold, defined as Equipment sales revenues less Cost of equipment sold, was $1 million and $38 million for the three months ended March 31, 2018 and 2017, respectively. 

Selling, general and administrative expenses

Selling expenses decreased by $4 millionfor the three months ended March 31, 2018,due to lower advertising expenses and lower commissions expenses.

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General and administrative expenses decreased by $9 million for the three months ended March 31, 2018, mainly due to lower expenses for bad debts driven primarily by improved receivables collectability, lower employee related and consulting expenses, as well as reductions in numerous other general and administrative expense categories.

Depreciation, amortization and accretion

Depreciation, amortization and accretion increased for the three months ended March 31, 2018, due primarily to an increase in amortization expense related to billing system upgrades.

(Gain) loss on license sales and exchanges, net

Net gains in 2018 and 2017 were due to gains recognized on license sale and exchange transactions with various third parties. 

Components of Other Income (Expense)
		Three Months Ended
		March 31,
						2018 vs.
		2018¹		2017		2017
(Dollars in millions)
Operating income		$	65	$	54	21%
Equity in earnings of unconsolidated entities			38		33	16%
Interest and dividend income			4		3	32%
Interest expense			(29)		(28)	(3)%
Other, net			(1)		(1)	(22)%
Total investment and other income			12		7	69%
Income before income taxes			77		61	27%
Income tax expense			22		33	(33)%
Net income			55		28	97%
Less: Net income attributable to noncontrolling interests, net of tax			10		2	>100%
Net income attributable to U.S. Cellular shareholders		$	45	$	26	69%
1	As of January 1, 2018, U.S. Cellular adopted ASU 2014-09 using a modified retrospective approach. Under this method, the new accounting standard is applied only to the most recent period presented.  See Note 2 — Revenue Recognition in the Notes to Consolidated Financial Statements for additional information.

Equity in earnings of unconsolidated entities

Equity in earnings of unconsolidated entities represents U.S. Cellular’s share of net income from entities in which it has a noncontrolling interest and that are accounted for by the equity method. U.S. Cellular’s investment in the Los Angeles SMSA Limited Partnership (LA Partnership) contributed $19 million and $16million to Equity in earnings of unconsolidated entities for the three months ended March 31, 2018 and 2017, respectively.  See Note 8 — Investments in Unconsolidated Entities in the Notes to Consolidated Financial Statements for additional information.

Income tax expense

The effective tax rate on Income before income taxes for the three months ended March 31, 2018 and 2017, was 28.8%and 54.2%, respectively. The lower rate in 2018 as compared to 2017 is due primarily to the reduction of the U.S. federal corporate tax rate from 35% to 21% as a result of the Tax Act enacted in December 2017, as well as immaterial tax adjustments having a distortive impact on the tax rate in 2017.  See Note 5 — Income Taxes in the Notes to Consolidated Financial Statements for additional information related to income taxes.

Net income attributable to noncontrolling interests, net of tax

Net income attributable to noncontrolling interests, net of tax increased mainly due to out-of-period adjustments recorded during the three months ended March 31, 2018.  U.S. Cellular determined such adjustments were not material to any of the periods impacted.See Note 9 — Variable Interest Entities in the Notes to Consolidated Financial Statements for additional information.

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Liquidity and Capital Resources

Sources of Liquidity

U.S. Cellular operates a capital-intensive business.  Historically, U.S. Cellular has used internally-generated funds and also has obtained substantial funds from external sources for general corporate purposes.  In the past, U.S. Cellular’s existing cash and investment balances, funds available under its revolving credit facility, funds from other financing sources, including a term loan and other long-term debt, and cash flows from operating, certain investing and financing activities, including sales of assets or businesses, provided sufficient liquidity and financial flexibility for U.S. Cellular to meet its normal day-to-day operating needs and debt service requirements, to finance the build-out and enhancement of markets and to fund acquisitions, primarily of spectrum licenses.  There is no assurance that this will be the case in the future.  See Market Risk for additional information regarding maturities of long-term debt.

Although U.S. Cellular currently has a significant cash balance, U.S. Cellular has incurred negative free cash flow at times in the past and this could occur in the future.  However, U.S. Cellular believes that existing cash and investment balances, funds available under its revolving credit facility, receivables securitization facility and expected cash flows from operating and investing activities will provide sufficient liquidity for U.S. Cellular to meet its normal day-to-day operating needs and debt service requirements for the coming year. 

U.S. Cellular may require substantial additional capital for, among other uses, funding day-to-day operating needs including working capital, acquisitions of providers of wireless telecommunications services, spectrum license or system acquisitions, system development and network capacity expansion, debt service requirements, the repurchase of shares, the payment of dividends, or making additional investments.  It may be necessary from time to time to increase the size of the existing revolving credit facility, to put in place a new credit facility, or to obtain other forms of financing in order to fund potential expenditures.  U.S. Cellular’s liquidity would be adversely affected if, among other things, U.S. Cellular is unable to obtain short or long-term financing on acceptable terms, U.S. Cellular makes significant spectrum license purchases, the LA Partnership discontinues or reduces distributions compared to historical levels, or Federal USF and/or other regulatory support payments decline.  In addition, although sales of assets or businesses by U.S. Cellular have been an important source of liquidity in prior periods, U.S. Cellular does not expect a similar level of such sales in the future.  

U.S. Cellular’s credit rating currently is sub-investment grade.  There can be no assurance that sufficient funds will continue to be available to U.S. Cellular or its subsidiaries on terms or at prices acceptable to U.S. Cellular.  Insufficient cash flows from operating activities, changes in its credit ratings, defaults of the terms of debt or credit agreements, uncertainty of access to capital, deterioration in the capital markets, reduced regulatory capital at banks which in turn limits their ability to borrow and lend, other changes in the performance of U.S. Cellular or in market conditions or other factors could limit or restrict the availability of financing on terms and prices acceptable to U.S. Cellular, which could require U.S. Cellular to reduce its acquisition, capital expenditure and business development programs, reduce the acquisition of spectrum licenses, and/or reduce or cease share repurchases and/or the payment of dividends.  U.S. Cellular cannot provide assurance that circumstances that could have a material adverse effect on its liquidity or capital resources will not occur.  Any of the foregoing would have an adverse impact on U.S. Cellular’s businesses, financial condition or results of operations.

Cash and Cash Equivalents

Cash and cash equivalents include cash and money market investments. The primary objective of U.S. Cellular’s Cash and cash equivalents is for use in its operations and acquisition, capital expenditure and business development programs.

AtMarch 31, 2018, U.S. Cellular’s Cash and cash equivalents totaled $509 million compared to $352 million at December 31, 2017. The majority of U.S. Cellular’s Cash and cash equivalents was held in bank deposit accounts and in money market funds that purchase only debt issued by the U.S. Treasury or U.S. government agencies across a range of eligible money market investments that may include, but are not limited to, government agency repurchase agreements, government agency debt, U.S. Treasury repurchase agreements, U.S. Treasury debt, and other securities collateralized by U.S. government obligations. U.S. Cellular monitors the financial viability of the money market funds and direct investments in which it invests and believes that the credit risk associated with these investments is low.

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Financing

U.S. Cellular has an unsecured revolving credit facility available for general corporate purposes, including spectrum purchases and capital expenditures.  This credit facility matures in June 2021.

U.S. Cellular’s unused capacity under its revolving credit facility was $298 million as of March 31, 2018.  U.S. Cellular believes it was in compliance with all of the financial covenants and requirements set forth in its revolving credit facility as of that date.  U.S. Cellular is in the process of seeking to replace this credit facility with a new facility that would mature in 2023.

U.S. Cellular, through its subsidiaries, also has a receivables securitization facility to permit securitized borrowings using its equipment installment plan receivables for general corporate purposes.  The unused capacity under this facility was $200million as of March 31, 2018, subject to sufficient collateral to satisfy the asset borrowing base provisions of the facility.  As of March 31, 2018, the USCC Master Note Trust (Trust) held $8 million of assets available to be pledged as collateral for the receivables securitization facility.  U.S. Cellular believes it was in compliance with all of the financial covenants and requirements set forth in its receivables securitization facility as of that date.

U.S. Cellular has in place an effective shelf registration statement on Form S-3 to issue senior or subordinated debt securities.

Long-term debt payments due for the remainder of 2018 and the next four years are $219 million, which represent 13% of the total gross long-term debt obligation at March 31, 2018.

Capital Expenditures

Capital expenditures (i.e., additions to property, plant and equipment and system development expenditures), which include the effects of accruals and capitalized interest, for the three months ended March 31,2018 and 2017,were as follows:

U.S. Cellular’s capital expenditures for the three months ended March 31, 2018 and 2017, were $70 million and $61 million, respectively. Capital expenditures for the full year 2018are expected to be between $500 million and $550 million.  These expenditures are expected to be used for the following purposes:  Enhance network coverage by continuing to deploy VoLTE technology in certain markets and providing additional capacity to accommodate increased network usage, principally data usage, by current customers; and Invest in and replace end of life platforms.

U.S. Cellular plans to finance its capital expenditures program for 2018 using primarily Cash flows from operating activities, existing cash balances and, if required, its receivables securitization and/or revolving credit facilities.

Acquisitions, Divestitures and Exchanges

U.S.Cellular may be engaged from time to time in negotiations (subject to all applicable regulations) relating to the acquisition, divestiture or exchange of companies, properties or wireless spectrum.  In general, U.S. Cellular may not disclose such transactions until there is a definitive agreement.  U.S.Cellular assesses its existing wireless interests on an ongoing basis with a goal of improving the competitiveness of its operations and maximizing its long-term return on capital.  As part of this strategy, U.S.Cellular actively seeks attractive opportunities to acquire wireless spectrum, including pursuant to FCC auctions. U.S.Cellular also may seek to divest outright or include in exchanges for other wireless interests those interests that are not strategic to its long-term success.

Variable Interest Entities

U.S.Cellular consolidates certain “variable interest entities” as defined under GAAP. See Note9 — Variable Interest Entities in the Notes to Consolidated Financial Statements for additional information related to these variable interest entities. U.S.Cellular may elect to make additional capital contributions and/or advances to these variable interest entities in future periods in order to fund their operations.

Common Share Repurchase Program

U.S.Cellular has repurchased and expects to continue to repurchase its Common Shares, subject to its repurchase program. However, there were no share repurchases made under this program in the three months endedMarch 31,2018 or in the year ended December 31, 2017.

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As of March 31, 2018, the total cumulative amount of U.S. Cellular Common Shares authorized to be purchased is 5,900,849.For additional information related to the current repurchase authorization, see Unregistered Sales of Equity Securities and Use of Proceeds. 

Contractual and Other Obligations

There were no material changes outside the ordinary course of businessbetween December 31, 2017 and March 31, 2018,to the Contractual and Other Obligations disclosed in Management’s Discussion and Analysis of Financial Condition and Results of Operations included in U.S. Cellular’s Form 10-K for the year ended December 31, 2017.

Off-Balance Sheet Arrangements

U.S.Cellular had no transactions, agreements or other contractual arrangements with unconsolidated entities involving “off-balance sheet arrangements,” as defined by SEC rules, that had or are reasonably likely to have a material current or future effect on its financial condition, results of operations, liquidity, capital expenditures or capital resources.

12

Consolidated Cash Flow Analysis

U.S. Cellular operates a capital- and marketing-intensive business.  U.S. Cellular makes substantial investments to acquire wireless licenses and properties and to construct and upgrade wireless telecommunications networks and facilities as a basis for creating long-term value for shareholders.  In recent years, rapid changes in technology and new opportunities have required substantial investments in potentially revenue‑enhancing and cost-reducing upgrades to U.S. Cellular’s networks.  U.S. Cellular utilizes cash on hand, cash from operating activities, cash proceeds from divestitures and dispositions of investments, and short-term and long-term debt financing to fund its acquisitions (including spectrum licenses), construction costs, operating expenses and share repurchases.  Cash flows may fluctuate from quarter to quarter and year to year due to seasonality, the timing of acquisitions and divestitures, capital expenditures and other factors.  The following discussion summarizes U.S. Cellular's cash flow activities for the three months endedMarch 31, 2018 and 2017.

2018 Commentary

U.S. Cellular’s Cash, cash equivalents and restricted cash increased $158 million in the first quarter of 2018.  Net cash provided by operating activities was $188 million in 2018 due primarily to net income of $55 million plus non-cash items of $158 million and distributions received from unconsolidated entities of $17 million.  This was partially offset by changes in working capital items which decreased net cash by $42 million.  The working capital decrease was primarily influenced by timing of annual employee bonus, vendor and tax payments, partially offset by collections of customer and agent receivables.  The adoption of ASU 2014-09 caused fluctuations in working capital items in the Consolidated Balance Sheet; however, it did not have an impact on total Net cash provided by operating activities.

Cash flows used for investing activities were $23 million.  Cash paid in 2018 for additions to property, plant and equipment totaled $76 million.  This was partially offset by cash received for investments of $50 million, resulting from the redemption of short-term Treasury bills. 

Cash flows used for financing activities were $7 million, reflecting ordinary activity such as the scheduled repayments of debt.

2017 Commentary

U.S. Cellular’s Cash, cash equivalents and restricted cash decreased $14 million in 2017. Net cash provided by operating activities was $61 million in 2017, due primarily to net income of $28 million plus non-cash items of $139 million and distributions received from unconsolidated entities of $11 million.  This was partially offset by changes in working capital items which decreased cash by $117 million.  The decrease in working capital items was due in part to a $44 million increase in equipment installment plan receivables.  The decrease was also a result of a $78 million decrease in accounts payable.

The net cash provided by operating activities was offset by cash flows used for investing activities of $75 million. Cash paid for additions to property, plant and equipment in the first quarter of 2017 totaled $88 million. Cash paid for acquisitions and licenses was $3 million which was offset by Cash received from divestitures and exchanges of $16 million.

13

Consolidated Balance Sheet Analysis

The following discussion addresses certain captions in the consolidated balance sheet and changes therein.  This discussion is intended to highlight the significant changes and is not intended to fully reconcile the changes.  Changes in financial condition during 2018 were as follows:

Cash and cash equivalents

See the Consolidated Cash Flow Analysis above for a discussion of cash and cash equivalents.

Short-term investments

Short-term investments decreased $50 million due to the maturity of short-term investments, which consisted of U.S. Treasury Bills with original maturities of six months.

Other assets and deferred charges

Other assets and deferred charges increased $147 million due primarily to the creation of contract assets and contract cost assets as a result of the adoption of ASU 2014-09.  See Note 2—Revenue Recognition in the Notes to Consolidated Financial Statements for additional information.

Customer deposits and deferred revenues

Customer deposits and deferred revenues decreased $53 million due in large part to the impact of reclassifying certain deferred revenues to Other assets and deferred charges to reflect the net contract position for each customer contract on the Consolidated Balance Sheet as required by ASU 2014-09, which was adopted on January 1, 2018.  See Note 2—Revenue Recognition in the Notes to Consolidated Financial Statements for additional information.

Accrued compensation

Accrued compensation decreased $31 million due primarily to employee bonus payments in March 2018.

Deferred income tax liability, net

Deferred income tax liability, net, increased $65 million due primarily to the adoption of ASU 2014-09 increasing the net basis of assets on a U.S. GAAP basis without a corresponding increase in tax basis, as well as the impact of full expensing of qualified property additions following the enactment of the Tax Act.

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Supplemental Information Relating to Non-GAAP Financial Measures

U.S. Cellularsometimes usesinformation derived from consolidated financial information but not presented initsfinancial statements prepared in accordance withU.S.GAAP to evaluate the performance ofitsbusiness. Certain of these measures are considered “non-GAAP financial measures” under U.S. Securities and Exchange Commission Rules. Specifically,U.S. Cellularhasreferred to the following measures in this Form 10-Q Report:

• EBITDA
• Adjusted EBITDA
• Adjusted OIBDA
• Free cash flow
• Postpaid ABPU

• Postpaid ABPA

Following are explanations of each of these measures.

EBITDA, Adjusted EBITDA and Adjusted OIBDA

EBITDA, Adjusted EBITDA and Adjusted OIBDA are defined as net income adjusted for the items set forth in the reconciliation below. EBITDA, Adjusted EBITDA and Adjusted OIBDA are not measures of financial performance under GAAP and should not be considered as alternatives to Net income or Cash flows from operating activities, as indicators of cash flows or as measures of liquidity.  U.S. Cellular does not intend to imply that any such items set forth in the reconciliation below are non-recurring, infrequent or unusual; such items may occur in the future.

Management uses Adjusted EBITDA and Adjusted OIBDA as measurements of profitability and, therefore, reconciliations to Net income are deemed appropriate.  Management believes Adjusted EBITDA and Adjusted OIBDA are useful measures of U.S. Cellular’s operating results before significant recurring non-cash charges, gains and losses, and other items as presented below as they provide additional relevant and useful information to investors and other users of U.S. Cellular’s financial data in evaluating the effectiveness of its operations and underlying business trends in a manner that is consistent with management’s evaluation of business performance.  Adjusted EBITDA shows adjusted earnings before interest, taxes, depreciation, amortization and accretion, and gains and losses, while Adjusted OIBDA reduces this measure further to exclude Equity in earnings of unconsolidated entities and Interest and dividend income in order to more effectively show the performance of operating activities excluding investment activities.  The following table reconciles EBITDA, Adjusted EBITDA and Adjusted OIBDA to the corresponding GAAP measure, Net income.

15

			Three Months Ended
			March 31,
			2018¹		2017
(Dollars in millions)
Net income (GAAP)			$	55	$	28
Add back:
	Income tax expense			22		33
	Interest expense			29		28
	Depreciation, amortization and accretion			159		153
EBITDA (Non-GAAP)				265		242
Add back or deduct:
	(Gain) loss on asset disposals, net			1		4
	(Gain) loss on license sales and exchanges, net			(7)		(17)
Adjusted EBITDA (Non-GAAP)				259		229
Deduct:
	Equity in earnings of unconsolidated entities			38		33
	Interest and dividend income			4		3
	Other, net			(1)		(1)
Adjusted OIBDA (Non-GAAP)				218		194
Deduct:
	Depreciation, amortization and accretion			159		153
	(Gain) loss on asset disposals, net			1		4
	(Gain) loss on license sales and exchanges, net			(7)		(17)
Operating income (GAAP)			$	65	$	54
1		As of January 1, 2018, U.S. Cellular adopted ASU 2014-09 using a modified retrospective approach. Under this method, the new accounting standard is applied only to the most recent period presented.  See Note 2 — Revenue Recognition in the Notes to Consolidated Financial Statements for additional information.

16

Free Cash Flow

The following table presentsFree cash flow. Management uses Free cash flow as a liquidity measure and it is defined asCash flows from operating activitiesless Cash paid for additions to property, plant and equipment.Free cash flow is a non-GAAP financial measurewhich U.S. Cellular believes may be useful to investors and other users of its financial information in evaluating liquidity, specifically, the amount of net cash generated by business operations after deducting Cash paid for additions to property, plant and equipment. 

		Three Months Ended March 31,
		2018		2017
(Dollars in millions)
Cash flows from operating activities (GAAP)		$	188	$	61
Less: Cash paid for additions to property, plant and equipment			76		88
	Free cash flow (Non-GAAP)	$	112	$	(27)

Postpaid ABPU and Postpaid ABPA

U.S. Cellular presents Postpaid ABPU and Postpaid ABPA to reflect estimated cash collections from postpaid customer billings for both service and equipment resulting from the increased adoption of equipment installment plans.  Postpaid ABPU and Postpaid ABPA, as previously defined, are non-GAAP financial measures which U.S. Cellular believes are useful to investors and other users of its financial information in showing trends in both service and equipment sales revenues received from customers. 

			Three Months Ended March 31,
			2018¹		2017
(Dollars and connection counts in millions)
Calculation of Postpaid ARPU
Postpaid service revenues			$	598	$	608
Average number of postpaid connections				4.50		4.46
Number of months in period				3		3
	Postpaid ARPU (GAAP metric)		$	44.34	$	45.42
Calculation of Postpaid ABPU
Postpaid service revenues			$	598	$	608
Equipment installment plan billings				172		139
	Total billings to postpaid connections		$	770	$	747
Average number of postpaid connections				4.50		4.46
Number of months in period				3		3
	Postpaid ABPU (Non-GAAP metric)		$	57.10	$	55.82
Calculation of Postpaid ARPA
Postpaid service revenues			$	598	$	608
Average number of postpaid accounts				1.69		1.66
Number of months in period				3		3
	Postpaid ARPA (GAAP metric)		$	118.22	$	121.88
Calculation of Postpaid ABPA
Postpaid service revenues			$	598	$	608
Equipment installment plan billings				172		139
	Total billings to postpaid accounts		$	770	$	747
Average number of postpaid accounts				1.69		1.66
Number of months in period				3		3
	Postpaid ABPA (Non-GAAP metric)		$	152.26	$	149.78
1		As of January 1, 2018, U.S. Cellular adopted ASU 2014-09 using a modified retrospective approach.  Under this method, the new accounting standard is applied only to the most recent period presented.  See Note 2 — Revenue Recognition in the Notes to Consolidated Financial Statements for additional information.

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Application of Critical Accounting Policies and Estimates

U.S. Cellular prepares its consolidated financial statements in accordance with GAAP. U.S. Cellular’s significant accounting policies are discussed in detail in Note 1 — Summary of Significant Accounting Policies and Recent Accounting Pronouncements in the Notes to Consolidated Financial Statements and U.S. Cellular’s Application of Critical Accounting Policies and Estimates is discussed in detail in Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are included in U.S. Cellular’s Form10-K for the year ended December 31, 2017. 

Recent Accounting Pronouncements

See Note 1 — Basis of Presentation in the Notes to Consolidated Financial Statements for information on recent accounting pronouncements.

Regulatory Matters

FCC Mobility Fund Phase II Order

In October 2011, the FCC adopted its USF/Intercarrier Compensation Transformation Order (USF Order).  Pursuant to this order, U.S. Cellular’s then current Federal USF support was to be phased down at the rate of 20% per year beginning July 1, 2012.  The USF Order contemplated the establishment of a new mobile USF program and provided for a pause in the phase down if that program was not timely implemented by July 2014.  The Phase II Connect America Mobility Fund (MF2) was not operational as of July 2014 and, therefore, as provided by the USF Order, the phase down was suspended at 60% of the baseline amount until such time as the FCC had taken steps to establish the MF2.  In February 2017, the FCC adopted the MF2 Order addressing the framework for MF2 and the resumption of the phase down.  The MF2 Order establishes a support fund of $453 million annually for ten years to be distributed through a market-based, multi-round reverse auction.  For areas that receive support under MF2, legacy support to MF2 Auction winners will terminate and be replaced with MF2 support effective the first day of the month following release of the public notice closing the auction.  Legacy support  in areas where the legacy support recipient is not an MF2 winner will be subject to phase down over two years unless there is no winner in a particular census block, in which case it will be continued for one legacy support recipient only.  The MF2 Order further states that the phase down of legacy support for areas that were not eligible for support under MF2 will commence on the first day of the month following the completion of the auction and will conclude two years later. 

In August 2017, the FCC adopted the MF2 Challenge Process Order, which laid out procedures for establishing areas that would be eligible for support under the MF2 program.  This will include a collection process to be followed by a challenge window, a challenge response window, and finally adjudication of any coverage disputes.  In September 2017, the FCC issued a public notice initiating the collection of 4G LTE coverage data.  Responses submitting the collected data were due on January 4, 2018. 

On February 27, 2018, the FCC issued public notices providing detailed challenge procedures and a schedule for the challenge process.  Pursuant to these notices, the challenge window began on March 29, 2018 and will close on August 27, 2018.  No earlier than thirty days after the FCC processes the challenges, it will open a thirty-day challenge response window.  Following the challenge response window, the FCC will adjudicate any disputes.  This entire process must be completed before an auction can be commenced. 

U.S. Cellular cannot predict at this time when the MF2 auction will occur, when the phase down period for its existing legacy support from the Federal USF will commence, or whether the MF2 auction will provide opportunities to U.S. Cellular to offset any loss in existing support.  U.S. Cellular currently expects that its legacy support will continue at the 2017 level through 2018.

Millimeter Wave Spectrum Auctions

At its open meeting on April 17, 2018, the FCC adopted a public notice seeking comment on procedures for two auctions of spectrum licenses in the 28 GHz and 24 GHz bands.  As proposed, the 28GHz auction (Auction 101) would commence on November 14, 2018, and would offer two 425 MHz licenses in the 28 GHz band over portions of the United States that do not have incumbent licensees.  Following the completion of Auction 101, the FCC would commence the 24 GHz auction (Auction 102), which would offer up to seven 100 MHz licenses in the 24 GHz band in Partial Economic Areas covering most of the United States.

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Private Securities Litigation Reform Act of1995

Safe Harbor Cautionary Statement

This Form 10-Q, including exhibits, contains statements that are not based on historical facts and represent forward-looking statements, as this term is defined in the Private Securities Litigation Reform Act of 1995.  All statements, other than statements of historical facts, that address activities, events or developments that U.S. Cellular intends, expects, projects, believes, estimates, plans or anticipates will or may occur in the future are forward-looking statements.  The words “believes,” “anticipates,” “estimates,” “expects,” “plans,” “intends,” “projects” and similar expressions are intended to identify these forward-looking statements, but are not the exclusive means of identifying them.  Such forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results, events or developments to be significantly different from any future results, events or developments expressed or implied by such forward-looking statements.  Such risks, uncertainties and other factors include those set forth below, as more fully described under “Risk Factors” in U.S. Cellular’s Form 10-K for the year ended December 31, 2017.  Each of the following risks could have a material adverse effect on U.S. Cellular’s business, financial condition or results of operations.  However, such factors are not necessarily all of the important factors that could cause actual results, performance or achievements to differ materially from those expressed in, or implied by, the forward-looking statements contained in this document.  Other unknown or unpredictable factors also could have material adverse effects on future results, performance or achievements.  U.S. Cellular undertakes no obligation to update publicly any forward-looking statements whether as a result of new information, future events or otherwise.  You should carefully consider the Risk Factors in U.S. Cellular’s Form 10-K for the year ended December 31, 2017, the following factors and other information contained in, or incorporated by reference into, this Form 10-Q to understand the material risks relating to U.S. Cellular’s business, financial condition or results of operations.

• Intense competition in the markets in which U.S. Cellular operates could adversely affect U.S. Cellular’s revenues or increase its costs to compete.
• A failure by U.S. Cellular to successfully execute its business strategy (including planned acquisitions, spectrum acquisitions, divestitures and exchanges) or allocate resources or capital could have an adverse effect on U.S. Cellular’s business, financial condition or results of operations.
• Uncertainty in U.S. Cellular’s future cash flow and liquidity or in the ability to access capital, deterioration in the capital markets, other changes in U.S. Cellular’s performance or market conditions, changes in U.S. Cellular’s credit ratings or other factors could limit or restrict the availability of financing on terms and prices acceptable to U.S. Cellular, which could require U.S. Cellular to reduce its construction, development or acquisition programs, reduce the acquisition of spectrum licenses, and/or reduce or cease share repurchases.
• U.S. Cellular has a significant amount of indebtedness which could adversely affect its financial performance and in turn adversely affect its ability to make payments on its indebtedness, comply with terms of debt covenants and incur additional debt.
• Changes in roaming practices or other factorscould cause U.S. Cellular's roaming revenues to decline from current levels, roaming expenses to increase from current levels and/or impact U.S. Cellular's ability to service its customers in geographic areas where U.S. Cellular does not have its own network, which could have an adverse effect on U.S. Cellular's business, financial condition or results of operations.
• A failure by U.S. Cellular to obtain access to adequate radio spectrum to meet current or anticipated future needs and/or to accurately predict future needs for radio spectrum could have an adverse effect on U.S. Cellular’s business, financial condition or results of operations.
• To the extent conducted by the FCC, U.S. Cellular may participate in FCC auctions for additional spectrum or for funding in certain Universal Service programs in the future directly or indirectly and, during certain periods, will be subject to the FCC’s anti-collusion rules, which could have an adverse effect on U.S.Cellular.
• Failure by U.S.Cellular to timely or fully comply with any existing applicable legislative and/or regulatory requirements or changes thereto could adversely affect U.S.Cellular’s business, financial condition or results of operations.
• An inability to attract people of outstanding potential, to develop their potential through education and assignments, and to retain them by keeping them engaged, challenged and properly rewarded could have an adverse effect on U.S. Cellular's business, financial condition or results of operations.
• U.S.Cellular’s assets and revenue are concentrated in the U.S.wireless telecommunications industry.  Consequently, its operatingresults may fluctuate based on factors related primarily to conditions in this industry.
• U.S. Cellular’s smaller scale relative to larger competitors that may have greater financial and other resources than U.S. Cellular could cause U.S. Cellular to be unable to compete successfully, which could adversely affect its business, financial condition or results of operations.

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• Changes in various business factors, including changes in demand, customer preferences and perceptions, price competition, churn from customer switching activity and other factors, could have an adverse effect on U.S.Cellular’s business, financial condition or results of operations.
• Advances or changes in technology could render certain technologies used by U.S.Cellular obsolete, could put U.S. Cellular at a competitive disadvantage, could reduce U.S.Cellular’s revenues or could increase its costs of doing business.
• Complexities associated with deploying new technologies present substantial risk and U.S. Cellular investments in unproven technologies may not produce the benefits that U.S. Cellular expects.
• U.S. Cellular receives regulatory support and is subject to numerous surcharges and fees from federal, state and local governments, and the applicability and the amount of the support and fees are subject to great uncertainty, which could have an adverse effect on U.S. Cellular’s business, financial condition or results of operations.
• Performance under device purchase agreements could have a material adverse impact on U.S. Cellular's business, financial condition or results of operations.
• Changes in U.S.Cellular’s enterprise value, changes in the market supply or demand for wireless licenses, adverse developments in the business or the industry in which U.S.Cellular is involved and/or other factors could require U.S.Cellular to recognize impairments in the carrying value of its licenses and/or physical assets.
• Costs, integration problems or other factors associated with acquisitions, divestitures or exchanges of properties or licenses and/or expansion of U.S.Cellular’s business could have an adverse effect on U.S.Cellular’s business, financial condition or results of operations.
• A failure by U.S.Cellular to complete significant network construction and systems implementation activities as part of its plans to improve the quality, coverage, capabilities and capacity of its network, support and other systems and infrastructure could have an adverse effect on its operations.
• Difficulties involving third parties with which U.S. Cellular does business, including changes in U.S. Cellular's relationships with or financial or operational difficulties of key suppliers or independent agents and third party national retailers who market U.S. Cellular’s services, could adversely affect U.S.Cellular’s business, financial condition or results of operations.
• U.S.Cellular has significant investments in entities that it does not control. Losses in the value of such investments could have an adverse effect on U.S.Cellular’s financial condition or results of operations.
• A failure by U.S. Cellular to maintain flexible and capable telecommunication networks or information technology, or a material disruption thereof, could have an adverse effect on U.S. Cellular’s business, financial condition or results of operations.
• U.S. Cellular has experienced and, in the future, expects to experience cyber-attacks or other breaches of network or information technology security of varying degrees on a regular basis, which could have an adverse effect on U.S. Cellular's business, financial condition or results of operations.
• The market price of U.S.Cellular’s Common Shares is subject to fluctuations due to a variety of factors.
• Changes in facts or circumstances, including new or additional information, could require U.S.Cellular to record charges relating to adjustments of amounts reflected in the financial statements, which could have an adverse effect on U.S.Cellular’s business, financial condition or results of operations.
• Disruption in credit or other financial markets, a deterioration of U.S. or global economic conditions or other events could, among other things, impede U.S. Cellular’s access to or increase the cost of financing its operating and investment activities and/or result in reduced revenues and lower operating income and cash flows, which would have an adverse effect on U.S. Cellular’s business, financial condition or results of operations.
• Settlements, judgments, restraints on its current or future manner of doing business and/or legal costs resulting from pending and future litigation could have an adverse effect on U.S.Cellular’s business, financial condition or results of operations.
• The possible development of adverse precedent in litigation or conclusions in professional studies to the effect that radio frequency emissions from wireless devices and/or cell sites cause harmful health consequences, including cancer or tumors, or may interfere with various electronic medical devices such as pacemakers, could have an adverse effect on U.S.Cellular’s business, financial condition or results of operations.
• Claims of infringement of intellectual property and proprietary rights of others, primarily involving patent infringement claims, could prevent U.S. Cellular from using necessary technology to provide products or services or subject U.S. Cellular to expensive intellectual property litigation or monetary penalties, which could have an adverse effect on U.S. Cellular’s business, financial condition or results of operations.
• There are potential conflicts of interests between TDS and U.S.Cellular.

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• Certain matters, such as control by TDS and provisions in the U.S.Cellular Restated Certificate of Incorporation, may serve to discourage or make more difficult a change in control of U.S.Cellular.
• Any of the foregoing events or other events could cause revenues, earnings, capital expenditures and/or any other financial or statistical information to vary from U.S.Cellular’s forward-looking estimates by a material amount.

Risk Factors

In addition to the information set forth in this Form 10-Q, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in U.S. Cellular’s Annual Report on Form 10-K for the year ended December 31, 2017, which could materially affect U.S. Cellular’s business, financial condition or future results.  The risks described in this Form 10-Q and the Form 10-K for the year ended December 31, 2017, may not be the only risks that could affect U.S. Cellular.  Additional unidentified or unrecognized risks and uncertainties could materially adversely affect U.S. Cellular’s business, financial condition and/or operating results.  Subject to the foregoing, U.S. Cellular has not identified for disclosure any material changes to the risk factors as previously disclosed in U.S. Cellular’s Annual Report on Form 10-K for the year ended December 31, 2017.

Quantitative and Qualitative Disclosures about Market Risk

Market Risk

Refer to the disclosure under Market Risk in U.S. Cellular’s Form 10-K for the year ended December 31, 2017, for additional information, including information regarding required principal payments and the weighted average interest rates related to U.S. Cellular’s Long-term debt.  There have been no material changes to such information since December 31, 2017. 

See Note 3 — Fair Value Measurements in the Notes to Consolidated Financial Statements for additional information related to the fair value of U.S. Cellular’s Long-term debt as ofMarch 31, 2018.

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Financial Statements

United States Cellular Corporation

Consolidated Statement of Operations

(Unaudited)

			Three Months Ended
			March 31,
			2018		2017
(Dollars and shares in millions, except per share amounts)
Operating revenues
	Service		$	724	$	746
	Equipment sales			218		190
		Total operating revenues		942		936
Operating expenses
	System operations (excluding Depreciation,   amortization and accretion reported below)			179		175
	Cost of equipment sold			219		228
	Selling, general and administrative (including charges   from affiliates of $19 million and $21 million, respectively)			326		339
	Depreciation, amortization and accretion			159		153
	(Gain) loss on asset disposals, net			1		4
	(Gain) loss on license sales and exchanges, net			(7)		(17)
		Total operating expenses		877		882
Operating income				65		54
Investment and other income (expense)
	Equity in earnings of unconsolidated entities			38		33
	Interest and dividend income			4		3
	Interest expense			(29)		(28)
	Other, net			(1)		(1)
		Total investment and other income		12		7
Income before income taxes				77		61
	Income tax expense			22		33
Net income				55		28
Less: Net income attributable to noncontrolling interests, net of tax				10		2
Net income attributable to U.S. Cellular shareholders			$	45	$	26
Basic weighted average shares outstanding				85		85
Basic earnings per share attributable to U.S. Cellular shareholders			$	0.52	$	0.31
Diluted weighted average shares outstanding				86		86
Diluted earnings per share attributable to U.S. Cellular shareholders			$	0.52	$	0.31
The accompanying notes are an integral part of these consolidated financial statements.

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United States Cellular Corporation

Consolidated Statement of Cash Flows

(Unaudited)

					Three Months Ended
					March 31,
					2018		2017
(Dollars in millions)
Cash flows from operating activities
	Net income				$	55	$	28
	Add (deduct) adjustments to reconcile net income to net cash flows
		from operating activities
			Depreciation, amortization and accretion			159		153
			Bad debts expense			19		24
			Stock-based compensation expense			8		7
			Deferred income taxes, net			15		1
			Equity in earnings of unconsolidated entities			(38)		(33)
			Distributions from unconsolidated entities			17		11
			(Gain) loss on asset disposals, net			1		4
			(Gain) loss on license sales and exchanges, net			(7)		(17)
			Noncash interest			1		–
	Changes in assets and liabilities from operations
			Accounts receivable			69		26
			Equipment installment plans receivable			(17)		(44)
			Inventory			(2)		(3)
			Accounts payable			(30)		(78)
			Customer deposits and deferred revenues			(26)		(10)
			Accrued taxes			5		22
			Accrued interest			9		9
			Other assets and liabilities			(50)		(39)
				Net cash provided by operating activities		188		61
Cash flows from investing activities
	Cash paid for additions to property, plant and equipment					(76)		(88)
	Cash paid for licenses					(1)		(3)
	Cash received for investments					50		–
	Cash received from divestitures and exchanges					4		16
				Net cash used in investing activities		(23)		(75)
Cash flows from financing activities
	Repayment of long-term debt					(5)		(3)
	Common shares reissued for benefit plans, net of tax payments					2		3
	Other financing activities					(4)		–
				Net cash used in financing activities		(7)		–
Net increase (decrease) in cash, cash equivalents and restricted cash						158		(14)
Cash, cash equivalents and restricted cash
	Beginning of period					352		586
	End of period				$	510	$	572
The accompanying notes are an integral part of these consolidated financial statements.

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United States Cellular Corporation

Consolidated Balance Sheet — Assets

(Unaudited)

				March 31,		December 31,
				2018		2017
(Dollars in millions)
Current assets
	Cash and cash equivalents			$	509	$	352
	Short-term investments				–		50
	Accounts receivable
		Customers and agents, less allowances of $56 and $55, respectively			789		775
		Roaming			15		26
		Affiliated			4		1
		Other, less allowances of $1 and $1, respectively			35		41
	Inventory, net				141		138
	Prepaid expenses				66		79
	Other current assets				32		21
			Total current assets		1,591		1,483
Assets held for sale					6		10
Licenses					2,231		2,223
Investments in unconsolidated entities					450		415
Property, plant and equipment
	In service and under construction				7,662		7,628
	Less: Accumulated depreciation and amortization				5,429		5,308
			Property, plant and equipment, net		2,233		2,320
Other assets and deferred charges					537		390
Total assets1				$	7,048	$	6,841
The accompanying notes are an integral part of these consolidated financial statements.

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United States Cellular Corporation

Consolidated Balance Sheet — Liabilities and Equity

(Unaudited)

				March 31,		December 31,
				2018		2017
(Dollars and shares in millions, except per share amounts)
Current liabilities
	Current portion of long-term debt			$	18	$	18
	Accounts payable
		Affiliated			8		8
		Trade			267		302
	Customer deposits and deferred revenues				132		185
	Accrued taxes				58		56
	Accrued compensation				43		74
	Other current liabilities				90		90
			Total current liabilities		616		733
Deferred liabilities and credits
	Deferred income tax liability, net				526		461
	Other deferred liabilities and credits				359		337
Long-term debt, net					1,618		1,622
Commitments and contingencies
Noncontrolling interests with redemption features					11		1
Equity
	U.S. Cellular shareholders’ equity
		Series A Common and Common Shares
			Authorized 190 shares (50 Series A Common and 140 Common Shares)
			Issued 88 shares (33 Series A Common and 55 Common Shares)
			Outstanding 85 shares (33 Series A Common and 52 Common Shares)
			Par Value ($1.00 per share) ($33 Series A Common and $55 Common Shares)		88		88
		Additional paid-in capital			1,560		1,552
		Treasury shares, at cost, 3 Common Shares			(116)		(120)
		Retained earnings			2,375		2,157
			Total U.S. Cellular shareholders' equity		3,907		3,677
	Noncontrolling interests				11		10
		Total equity			3,918		3,687
Total liabilities and equity1				$	7,048	$	6,841
The accompanying notes are an integral part of these consolidated financial statements.
1		The consolidated total assets as of March 31, 2018 and December 31, 2017, include assets held by consolidated variable interest entities (VIEs) of $793 million and $785 million, respectively, which are not available to be used to settle the obligations of U.S. Cellular.  The consolidated total liabilities as of March 31, 2018 and December 31, 2017, include certain liabilities of consolidated VIEs of $21 million and $24 million, respectively, for which the creditors of the VIEs have no recourse to the general credit of U.S. Cellular.  See Note 9 — Variable Interest Entities for additional information.

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United States Cellular Corporation

Consolidated Statement of Changes in Equity

(Unaudited)

	U.S. Cellular Shareholders
	Series A Common and Common shares		Additional paid-in capital		Treasury shares		Retained earnings		Total U.S. Cellular shareholders' equity		Noncontrolling interests		Total equity
(Dollars in millions)
Balance, December 31, 2017	$	88	$	1,552	$	(120)	$	2,157	$	3,677	$	10	$	3,687
Cumulative effect of accounting change		–		–		–		175		175		1		176
Net income attributable to U.S. Cellular shareholders		–		–		–		45		45		–		45
Incentive and compensation plans		–				4		(2)		2		–		2
Stock-based compensation awards		–		8		–		–		8		–		8
Balance, March 31, 2018	$	88	$	1,560	$	(116)	$	2,375	$	3,907	$	11	$	3,918
The accompanying notes are an integral part of these consolidated financial statements.

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United States Cellular Corporation

Consolidated Statement of Changes in Equity

(Unaudited)

	U.S. Cellular Shareholders
	Series A Common and Common shares		Additional paid-in capital		Treasury shares		Retained earnings		Total U.S. Cellular shareholders' equity		Noncontrolling interests		Total equity
(Dollars in millions)
Balance, December 31, 2016	$	88	$	1,522	$	(136)	$	2,160	$	3,634	$	11	$	3,645
Net income attributable to U.S. Cellular shareholders		–		–		–		26		26		–		26
Net income attributable to noncontrolling interests   classified as equity		–		–		–		–		–		1		1
Incentive and compensation plans		–		–		4		(1)		3		–		3
Stock-based compensation awards		–		7		–		–		7		–		7
Balance, March 31, 2017	$	88	$	1,529	$	(132)	$	2,185	$	3,670	$	12	$	3,682
The accompanying notes are an integral part of these consolidated financial statements.

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United States Cellular Corporation

Notes to Consolidated Financial Statements

Note 1Basis of Presentation

United States Cellular Corporation (U.S. Cellular), a Delaware corporation, is an 83%-owned subsidiary of Telephone and Data Systems, Inc. (TDS).

The accounting policies of U.S. Cellular conform to accounting principles generally accepted in the United States of America (GAAP) as set forth in the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC).  The consolidated financial statements include the accounts of U.S. Cellular, subsidiaries in which it has a controlling financial interest, general partnerships in which U.S. Cellular has a majority partnership interest and certain entities in which U.S. Cellular has a variable interest that require consolidation under GAAP. All material intercompany accounts and transactions have been eliminated.

The unaudited consolidated financial statements included herein have been prepared by U.S. Cellular pursuant to the rulesand regulations of the Securities and Exchange Commission (SEC).  Certain information and disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rulesand regulations.  However, U.S. Cellular believes that the disclosures included herein are adequate to make the information presented not misleading. Certain numbers included herein are rounded to millions for ease of presentation; however, calculated amounts and percentages are determined using the unrounded numbers.  These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in U.S. Cellular’s Annual Report on Form10-K (Form10-K) for the year ended December 31, 2017.

The accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring items, unless otherwise disclosed) necessary for the fair statement of U.S. Cellular’s financial position as of March 31, 2018 and December 31, 2017, and its results of operations, cash flows and changes in equity for the three months ended March 31, 2018 and 2017.  The Consolidated Statement of Comprehensive Income was not included because comprehensive income for the three months ended March 31, 2018 and 2017, equaled net income. These results are not necessarily indicative of the results to be expected for the full year.  U.S. Cellular has not changed its significant accounting and reporting policies from those disclosed in its Form 10-K for the year ended December 31, 2017, except as described below and as disclosed in Note 2 — Revenue Recognition and Note 8— Investments in Unconsolidated Entities.

Restricted Cash

U.S. Cellular presents restricted cash with cash and cash equivalents in the Consolidated Statement of Cash Flows.  The following table provides a reconciliation of Cash and cash equivalents and restricted cash reported in the Consolidated Balance Sheet to the total of the amounts in the Consolidated Statement of Cash Flows as ofMarch 31, 2018 and December 31, 2017.

			March 31,		December 31,
			2018		2017
(Dollars in millions)
Cash and cash equivalents		$	509	$	352
Restricted cash included in:
	Other current assets		1		–
Cash, cash equivalents and restricted cash in the statement of cash flows		$	510	$	352

Recently Issued Accounting Pronouncements Not Yet Adopted

In February 2016, the FASB issued Accounting Standards Update 2016-02, Leases (ASU 2016-02).  ASU 2016-02 requires lessees to record a right-of-use asset and lease liability for almost all leases.  This ASU does not substantially impact the lessor accounting model.  However, some changes to the lessor accounting guidance were made to align with lessee accounting changes within Accounting Standards Codification (ASC) 842, Leases and certain key aspects of ASC 606, Revenue from Contracts with Customers.  Early adoption is permitted; however, U.S. Cellular plans to adopt ASU 2016-02 on a modified retrospective basis when required on January 1, 2019.  In January 2018, the FASB issued Accounting Standards Update 2018-01, Leases (ASU 2018-01), which permits an entity to elect an optional transition practical expedient to not evaluate land easements that exist or expired before the entities adoption of ASU 2016-02.  U.S. Cellular plans to adopt ASU 2018-01 in conjunction with its adoption of ASU 2016-02.  U.S. Cellular is evaluating the full effect that adoption of ASU 2016-02 and ASU 2018-01 will have on its financial condition, results of operations and disclosures.  Upon adoption, U.S. Cellular expects a substantial increase to assets and liabilities on its balance sheet and is in the process of implementing a new lease management and accounting system to assist in the application of the new standard.

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In June 2016, the FASB issued Accounting Standards Update 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments (ASU 2016-13).  ASU 2016-13 requires entities to use a new forward-looking, expected loss model to estimate credit losses.  It also requires additional disclosure relating to the credit quality of trade and other receivables, including information relating to management’s estimate of credit allowances.  U.S. Cellular is required to adopt ASU 2016-13 on January 1, 2020, using the modified retrospective approach.  Early adoption is permitted as of January 1, 2019. U.S. Cellular is evaluating the effects that adoption of ASU 2016-13 will have on its financial position, results of operations and disclosures.

Amounts Collected from Customers and Remitted to Governmental Authorities

U.S. Cellular records amounts collected from customers and remitted to governmental authorities on a net basis within a tax liability account if the tax is assessed upon the customer and U.S. Cellular merely acts as an agent in collecting the tax on behalf of the imposing governmental authority.  If the tax is assessed upon U.S. Cellular, then amounts collected from customers as recovery of the tax are recorded in Service revenues and amounts remitted to governmental authorities are recorded in Selling, general and administrative expenses in the Consolidated Statement of Operations.  The amounts recorded gross in revenues that are billed to customers and remitted to governmental authorities totaled $17million and $14 million for the three months ended March 31, 2018 and 2017, respectively.

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Note 2 Revenue Recognition

Change in Accounting Policy

In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers and has since amended the standard with Accounting Standards Update 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, Accounting Standards Update 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net), Accounting Standards Update 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing, Accounting Standards Update 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients, and Accounting Standards Update 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, collectively referred to hereinafter as ASU 2014-09.  These standards replace existing revenue recognition rules with a single comprehensive model to use in accounting for revenue arising from contracts with customers.  In February 2017, the FASB issued Accounting Standards Update 2017-05, Other Income – Gains and Losses from the Derecognition of Nonfinancial Assets:  Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (ASU 2017-05).  ASU 2017-05 clarifies how entities account for the derecognition of a nonfinancial asset and adds guidance for partial sales of nonfinancial assets.  U.S. Cellular adopted the provisions of ASU 2014-09 and ASU 2017-05 and applied them to all contracts as of January 1, 2018, using a modified retrospective method.  Under this method, the new accounting standard is applied only to the most recent period presented, recognizing the cumulative effect of the accounting change as an adjustment to the beginning balance of retained earnings.  Accordingly, prior periods have not been recast to reflect the new accounting standard.  The cumulative effect of applying the provisions of ASU 2014-09 resulted in an increase of $175 million in retained earnings as of January 1, 2018.  ASU 2017-05 had no impact to retained earnings as of January 1, 2018.

As a practical expedient, U.S. Cellular groups similar contracts or similar performance obligations together into portfolios of contracts or performance obligations if doing so does not result in a significant difference from applying the new accounting standard to the individual contracts.  U.S. Cellular applies this grouping method for the following types of transactions: device activation fees, contract acquisition costs, and certain customer promotions.  Contract portfolios will be recognized over the respective expected customer lives or terms of the contracts. 

The line items impacted by the adoption of ASU 2014-09 and ASU 2017-05 in the Consolidated Statement of Operations and the Consolidated Balance Sheet are presented below. 

Consolidated Statement of Operations

	Results under prior accounting standards
			Adjustment		As reported
Three Months Ended March 31, 2018
(Dollars and shares in millions, except per share amounts)
Operating revenues
Service	$	754	$	(30)	$	724
Equipment sales		198		20		218
Total operating revenues		952		(10)		942
Cost of equipment sold		222		(3)		219
(Gain) loss on license sales and exchanges, net		(6)		(1)		(7)
Total operating expenses		882		(5)		877
Operating income (loss)		70		(5)		65
Income (loss) before income taxes		82		(5)		77
Income tax expense (benefit)		24		(2)		22
Net income (loss)		58		(3)		55
Net income (loss) attributable to U.S. Cellular shareholders		48		(3)		45
Basic earnings (loss) per share attributable to
U.S. Cellular shareholders	$	0.56	$	(0.04)	$	0.52
Diluted earnings (loss) per share attributable to
U.S. Cellular shareholders	$	0.56	$	(0.04)	$	0.52

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The decrease in Service revenues and the increase in Equipment sales revenues are driven primarily by differences in the timing and classification of revenue recognized for certain arrangements with multiple performance obligations and ceasing to record deferred imputed interest and the resulting interest income on equipment installment contracts.  Under prior accounting standards, revenues were allocated to deliverables using the relative selling price method, where consideration was allocated to each element on the basis of its relative selling price.  Revenue recognized for the delivered items was limited to the amount due from the customer that was not contingent upon the delivery of additional products or services.  Under ASU 2014-09, the revenue allocation of the transaction price is based on the relative standalone selling prices of the individual performance obligations in the customer’s contract, and the resulting revenue attributable to each is recognized as control over the performance obligation is transferred to the customer.  This has resulted in increased Equipment sales revenues as more revenue is allocated to discounted equipment than under prior accounting standards.  Under prior accounting standards, U.S. Cellular deferred imputed interest related to equipment installment plan receivable contracts that exceeded twelve months, and recognized the corresponding interest income over the contract period in Service revenues.  Under the provisions of ASU 2014-09, U.S. Cellular has determined that equipment installment plan contracts do not contain a significant financing component, and accordingly U.S. Cellular ceased recording deferred imputed interest and the resulting interest income on equipment installment contracts upon the adoption of ASU 2014-09. 

Cost of equipment sold decreased due to a change in timing of recognition of cost of goods sold in the agent channel.  Under prior accounting standards, Equipment sales to agents and the related Cost of equipment sold was recognized when equipment was sold through from the agent to end user customers.  In accordance with the provisions of ASU 2014-09, such amounts are recognized when U.S. Cellular delivers the equipment to the agent. 

Under ASU 2017-05, (Gain) loss on license sales and exchanges, net is calculated by subtracting the carrying amount of the distinct asset being disposed from the consideration measured and allocated to that distinct asset.  The consideration, or transaction price, is the fair value of the licenses received.  Under prior accounting standards, the transaction price was typically the fair value of the licenses surrendered.  This change in guidance has resulted in a decrease in (Gain) loss on license sales and exchanges, net. 

Consolidated Balance Sheet

	Results under prior accounting standards
			Adjustment		As reported
As of March 31, 2018
(Dollars in millions)
Accounts receivable
Customers and agents, less allowances	$	730	$	59	$	789
Roaming		26		(11)		15
Prepaid expenses		87		(21)		66
Other current assets		19		13		32
Total current assets		1,550		41		1,591
Licenses		2,230		1		2,231
Investments in unconsolidated entities		436		14		450
Other assets and deferred charges		383		154		537
Total assets		6,838		210		7,048
Customer deposits and deferred revenues		158		(26)		132
Accrued taxes		59		(1)		58
Other current liabilities		86		4		90
Total current liabilities		638		(22)		616
Deferred income tax liability, net		477		49		526
Other deferred liabilities and credits		349		10		359
Retained earnings		2,203		172		2,375
Total U.S. Cellular shareholders' equity		3,735		172		3,907
Noncontrolling interests		10		1		11
Total equity		3,745		173		3,918
Total liabilities and equity		6,838		210		7,048

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As a result of adoption of ASU 2014-09, U.S. Cellular recorded short-term and long-term contract assets and contract liabilities in its Consolidated Balance Sheet as of March 31, 2018.  Under ASU 2014-09, the timing of recognition of revenue for each performance obligation may differ from the timing of the customer billing, creating a contract asset or contract liability.  See Contract Balances below for additional information.  Contract assets are included in Other current assets if short-term in nature or Other assets and deferred charges if long-term in nature.  Short-term contract liabilities are classified as Customer deposits and deferred revenues and long-term contract liabilities are included in Other deferred liabilities and credits.  Accounts receivable increased as a result of U.S. Cellular ceasing to record deferred imputed interest.  Certain prepaid expenses have been reclassified as contract cost assets, which are a component of Other assets and deferred charges.  Investments in unconsolidated entities increased due to the cumulative effect of applying the provisions of ASU 2014-09 to certain of U.S. Cellular’s equity method investments as of January 1, 2018. Deferred income tax liabilities, net, increased due to the provisions of ASU 2014-09 increasing the net basis of assets on a U.S. GAAP basis, without a corresponding increase in tax basis. Contract cost assets have also been created as a result of ASU 2014-09 due to capitalization of costs to obtain a new contract.  See Contract Cost Assets below for additional information.

Nature of goods and services

The following is a description of principal activities from which U.S. Cellular generates its revenues.

Services and products	Nature, timing of satisfaction of performance obligations, and significant payment terms
Wireless services	Wireless service includes voice, messaging and data services.  Revenue is recognized in Service revenues as wireless service is provided to the customer.  Wireless services are generally billed and paid in advance on a monthly basis.
Wireless devices and accessories	U.S. Cellular offers a comprehensive range of wireless devices such as handsets, modems, mobile hotspots, home phones and tablets for use by its customers, as well as accessories.  U.S. Cellular also sells wireless devices to agents and other third-party distributors for resale.  U.S. Cellular frequently discounts wireless devices sold to new and current customers.  U.S. Cellular also offers customers the option to purchase certain devices under installment contracts over a specified time period.  For certain equipment installment plans, after a specified period of time, the customer may have the right to upgrade to a new device.  Such upgrades require the customer to enter into an equipment installment contract for the new device, and transfer the existing device to U.S. Cellular.  U.S. Cellular recognizes revenue in Equipment sales revenues when control of the device or accessory is transferred to the customer, which is generally upon delivery.
Wireless roaming	U.S. Cellular receives roaming revenues when other wireless carriers’ customers use U.S. Cellular’s wireless systems.  U.S. Cellular recognizes revenue in Service revenues when the roaming service is provided to the other carrier’s customer.
Wireless Eligible Telecommunications Carrier (ETC) Revenues	Telecommunications companies may be designated by states, or in some cases by the FCC, as an ETC to receive support payments from the Universal Service Fund if they provide specified services in “high cost” areas. ETC revenues recognized in the reporting period represent the amounts which U.S.Cellular is entitled to receive for such period, as determined and approved in connection with U.S.Cellular’s designation as an ETC in various states.
Wireless tower rents	U.S. Cellular receives tower rental revenues when another carrier leases tower space on a U.S. Cellular owned tower.  U.S. Cellular recognizes revenue in Service revenues in the period during which the services are provided.
Activation fees	U.S. Cellular charges its end customers activation fees in connection with the sale of certain services and equipment. These fees are deferred and recognized over the period benefitted.

Significant Judgments

U.S. Cellular sells bundled service and equipment offerings.  In these instances, U.S. Cellular recognizes its revenue based on the relative standalone selling prices for each distinct service or equipment performance obligation, or bundles thereof.  Revenues from sales of equipment are recognized when control has transferred to the customer.  Service revenues are recognized as the related service is provided.  Services are deemed to be highly interrelated when the method and timing of transfer and performance risk are the same.  Highly interrelated services that are determined to not be distinct have been grouped into a single performance obligation.  Each month of services promised is a performance obligation.  The series of monthly service performance obligations promised over the course of the contract are combined into a single performance obligation for purposes of the allocation. 

U.S. Cellular has made judgments regarding transaction price, including but not limited to issues relating to variable consideration, time value of money and returns.  When determined to be significant in the context of the contract, these items are considered in the valuation of transaction price at contract inception or modification, as appropriate. 

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Disaggregation of Revenue

In the following table, revenue is disaggregated by type of service and timing of revenue recognition.  Service revenues are recognized over time and Equipment sales are point in time.  

		Three Months Ended
		March 31, 2018
(Dollars in millions)
Revenues from contracts with customers:
Retail service		$	649
Inbound roaming			27
Other service			32
Service revenues from contracts with customers			708
Equipment sales			218
Total revenues from contracts with customers 1		$	926
1	These amounts do not include revenues outside the scope of ASU 2014-09; therefore, revenue line items in this table will not agree to amounts presented in the Consolidated Statement of Operations.

Contract Balances

For contracts that involve multiple element service and equipment offerings, the transaction price is allocated to each performance obligation based on its relative standalone selling price.  When payment is collected in advance of delivery of goods or services, a contract liability is recorded.  A contract asset is recorded when revenue is recognized in advance of U.S. Cellular’s right to receive consideration.  Once there is an unconditional right to receive the consideration, U.S. Cellular bills the customer under the terms of the respective contract and the amounts are recorded as receivables.

U.S. Cellular recognizes Equipment sales revenue when the equipment is delivered to the customer and a corresponding contract asset or liability is recorded for the difference between the amount of revenue recognized and the amount billed to the customer in cases where discounts are offered.  The contract asset or liability is reduced over the contract term as service is provided and billed to the customer.

The accounts receivable balance related to amounts billed and not paid on contracts with customers, net of allowances, is shown in the table below.  Bad debts expense recognized for the three months ended March 31, 2018, related to receivables was $19 million.

		Three Months Ended
		March 31, 2018
(Dollars in millions)
Accounts receivable
Customer and agents		$	789
Roaming			15
Other			27
Total 1		$	831
1	These amounts do not include accounts receivable related to revenues outside the scope of ASU 2014-09; therefore, accounts receivable line items presented in this table will not agree to amounts presented in the Consolidated Balance Sheet.

The following table provides a rollforward of contract assets from contracts with customers, which are recorded in Other current assets and Other assets and deferred charges in the Consolidated Balance Sheet.

	Contract Assets
(Dollars in millions)
Balance at December 31, 2017	$	–
Change in accounting policy		26
Contract additions		8
Terminated contracts		(1)
Bad debts expense		–
Revenue recognized		(8)
Balance at March 31, 2018	$	25

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The following table provides a rollforward of contract liabilities from contracts with customers, which are recorded in Customer deposits and deferred revenues and Other deferred liabilities and credits in the Consolidated Balance Sheet.

		Contract Liabilities
(Dollars in millions)
Balance at December 31, 2017		$	–
Change in accounting policy - Deferred revenues reclassification 1			167
Change in accounting policy - Retained earnings impact			(21)
Contract additions			24
Terminated contracts			–
Revenue recognized			(43)
Balance at March 31, 2018		$	127
1	This amount represents U.S. Cellular's obligation to transfer goods or services to customers for which it had received payment and classified as deferred revenue at December 31, 2017.

Transaction price allocated to the remaining performance obligations

The following table includes estimated service revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period. These estimates are based on contracts in place as of March 31, 2018, and may vary from actual results due to future contract modifications.  As a practical expedient, revenue related to contracts of less than one year, generally contracts with month-to-month customers, are excluded from these estimates. 

		Service Revenue
(Dollars in millions)
Remainder of 2018		$	244
2019			86
Thereafter			3
	Total	$	333

U.S. Cellular has certain contracts in which it bills customers an amount equal to a fixed per-unit price multiplied by a variable quantity.  Because U.S. Cellular invoices customers in an amount that corresponds directly with the value to the customer of the entity’s performance completed to date, U.S. Cellular may recognize revenue in that amount.  As a practical expedient, these contracts will be excluded from the estimate of future revenues expected to be recognized related to performance obligations that are unsatisfied as of the end of a reporting period. 

Contract Cost Assets

U.S. Cellular expects that incremental commission fees paid as a result of obtaining contracts are recoverable and therefore U.S. Cellular capitalizes these costs.  As a practical expedient, costs with an amortization period of one year or less are not capitalized.  The contract cost asset balance related to commission fees was $133 million at March 31, 2018, and was recorded in Other assets and deferred charges in the Consolidated Balance Sheet.  Capitalized commission fees are amortized based on the transfer of the goods or services to which the assets relate, typically the contract term.  Amortization of contract cost assets was $27 million for the three months ended March 31, 2018, and was included in Selling, general and administrative expense.  There was no impairment loss recognized for the three months ended March 31, 2018, related to contract cost assets.

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Note 3Fair Value Measurements

As of March 31, 2018 and December 31, 2017, U.S. Cellular did not have any material financial or nonfinancial assets or liabilities that were required to be recorded at fair value in its Consolidated Balance Sheet in accordance with GAAP.

The provisions of GAAP establish a fair value hierarchy that contains three levels for inputs used in fair value measurements.  Level 1 inputs include quoted market prices for identical assets or liabilities in active markets.  Level 2 inputs include quoted market prices for similar assets and liabilities in active markets or quoted market prices for identical assets and liabilities in inactive markets.  Level 3 inputs are unobservable.  A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.  A financial instrument’s level within the fair value hierarchy is not representative of its expected performance or its overall risk profile and, therefore, Level 3 assets are not necessarily higher risk than Level 2 assets or Level 1 assets.

U.S. Cellular has applied the provisions of fair value accounting for purposes of computing the fair value of financial instruments for disclosure purposes as displayed below.

		Level within the Fair Value Hierarchy	March 31, 2018				December 31, 2017
			Book Value		Fair Value		Book Value		Fair Value
(Dollars in millions)
Cash and cash equivalents		1	$	509	$	509	$	352	$	352
Short-term investments		1		–		–		50		50
Long-term debt
	Retail	2		917		944		917		939
	Institutional	2		534		555		534		522
	Other	2		188		188		191		191

The fair values of Cash and cash equivalents and Short-term investments approximate their book values due to the short-term nature of these financial instruments.  Long-term debt excludes capital lease obligations, other installment arrangements, the current portion of Long-term debt and debt financing costs.  The fair value of “Retail” Long-term debt was estimated using market prices for the 6.95% Senior Notes, 7.25% 2063 Senior Notes and 7.25% 2064 Senior Notes.  U.S. Cellular’s “Institutional” debt consists of the 6.7% Senior Notes which are traded over the counter.  U.S. Cellular’s “Other” debt consists of a senior term loan credit facility.  U.S. Cellular estimated the fair value of its Institutional and Other debt through a discounted cash flow analysis using the interest rates or estimated yield to maturity for each borrowing, which ranged from 4.58%to 6.34% and4.74% to 7.13% at March 31, 2018 and December 31, 2017, respectively.

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Note 4Equipment Installment Plans

U.S. Cellular sells devices to customers under equipment installment plans over a specified time period.  For certain equipment installment plans, after a specified period of time or amount of payments, the customer may have the right to upgrade to a new device and have the remaining unpaid equipment installment contract balance waived, subject to certain conditions, including trading in the original device in good working condition and signing a new equipment installment contract.  U.S. Cellular values this trade-in right as a guarantee liability.  The guarantee liability is initially measured at fair value and is determined based on assumptions including the probability and timing of the customer upgrading to a new device and the fair value of the device being traded-in at the time of trade-in.  When a customer exercises the trade-in option, both the outstanding receivable and guarantee liability balances related to the respective device are reduced to zero, and the value of the used device that is received in the transaction is recognized as inventory.  If the customer does not exercise the trade-in option at the time of eligibility, U.S. Cellular begins amortizing the liability and records this amortization as additional equipment revenue.  As of March 31, 2018 and December 31, 2017, the guarantee liability related to these plans was $13million and $15 million, respectively, and is reflected in Customer deposits and deferred revenues in the Consolidated Balance Sheet.

The following table summarizes equipment installment plan receivables as of March 31, 2018 and December 31, 2017.

	March 31, 2018		December 31, 2017
(Dollars in millions)
Equipment installment plan receivables, gross	$	871	$	873
Deferred interest		–		(80)
Equipment installment plan receivables, net of deferred interest		871		793
Allowance for credit losses		(66)		(65)
Equipment installment plan receivables, net	$	805	$	728
Net balance presented in the Consolidated Balance Sheet as:
Accounts receivable — Customers and agents (Current portion)	$	496	$	428
Other assets and deferred charges (Non-current portion)		309		300
Equipment installment plan receivables, net	$	805	$	728

U.S. Cellular uses various inputs, including internal data, information from the credit bureaus and other sources, to evaluate the credit profiles of its customers.  From this evaluation, a credit class is assigned to the customer that determines the number of eligible lines, the amount of credit available, and the down payment requirement, if any.  Customers assigned to credit classes requiring no down payment represent a lower risk category, whereas those assigned to credit classes requiring a down payment represent a higher risk category.  The balance and aging of the equipment installment plan receivables on a gross basis by credit category were as follows:

	March 31, 2018						December 31, 2017
	Lower Risk		Higher Risk		Total		Lower Risk		Higher Risk		Total
(Dollars in millions)
Unbilled	$	809	$	19	$	828	$	807	$	20	$	827
Billed — current		28		1		29		31		1		32
Billed — past due		12		2		14		12		2		14
Equipment installment plan receivables, gross	$	849	$	22	$	871	$	850	$	23	$	873

Activity for the three months ended March 31, 2018 and 2017, in the allowance for credit losses balance for the equipment installment plan receivables was as follows:

	March 31, 2018		March 31, 2017
(Dollars in millions)
Allowance for credit losses, beginning of period	$	65	$	50
Bad debts expense		14		15
Write-offs, net of recoveries		(13)		(12)
Allowance for credit losses, end of period	$	66	$	53

36

Note 5Income 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.

Note 6Earnings Per Share

Basic earnings per share attributable to U.S. Cellular shareholders is computed by dividing Net income attributable to U.S. Cellular shareholders by the weighted average number of common shares outstanding during the period.  Diluted earnings per share attributable to U.S. Cellular shareholders is computed by dividing Net income attributable to U.S. Cellular shareholders by the weighted average number of common shares outstanding during the period adjusted to include the effects of potentially dilutive securities.  Potentially dilutive securities primarily include incremental shares issuable upon the exercise of outstanding stock options and the vesting of performance and restricted stock units.

The amounts used in computing earnings per common share and the effects of potentially dilutive securities on the weighted average number of common shares were as follows:

	Three Months Ended
	March 31,
	2018		2017
(Dollars and shares in millions, except per share amounts)
Net income attributable to U.S. Cellular shareholders	$	45	$	26
Weighted average number of shares used in basic   earnings per share		85		85
Effects of dilutive securities		1		1
Weighted average number of shares used in diluted   earnings per share		86		86
Basic earnings per share attributable to U.S. Cellular   shareholders	$	0.52	$	0.31
Diluted earnings per share attributable to   U.S. Cellular shareholders	$	0.52	$	0.31

Certain Common Shares issuable upon the exercise of stock options or vesting of performance and restricted stock units were not included in average diluted shares outstanding for the calculation of Diluted earnings per share attributable to U.S. Cellular shareholders because their effects were antidilutive.  The number of such Common Shares excluded was 2 million for both the three months ended March 31, 2018 and 2017.

37

Note 7Intangible Assets

Activity related to Licenses for the three months endedMarch 31, 2018, is presented below:

Licenses
(Dollars in millions)
Balance at December 31, 2017		$	2,223
	Acquisitions		1
	Transferred to Assets held for sale		(10)
	Exchanges - Licenses received		18
	Exchanges - Licenses surrendered		(1)
Balance at March 31, 2018		$	2,231

Note 8Investments in Unconsolidated Entities

Investments in unconsolidated entities consist of amounts invested in wireless entities in which U.S. Cellular holds a noncontrolling interest.  On January 1, 2018, U.S. Cellular adopted Accounting Standards Update 2016-01, Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01) using the modified retrospective approach.  The adoption of ASU 2016-01 did not have a significant impact on U.S. Cellular’s financial position or results of operations. 

U.S. Cellular’s Investments in unconsolidated entities are accounted for using either the equity method or measurement alternative method as shown in the table below.  The measurement alternative method was elected for investments without readily determinable fair values formerly accounted for under the cost method.  The measurement alternative fair value represents cost minus any impairments plus or minus any observable price changes.  U.S. Cellular did not have an impairment or observable price change related to these investments for the three months ended March 31, 2018.

	March 31,		December 31,
	2018		2017
(Dollars in millions)
Equity method investments	$	444	$	411
Measurement alternative method investments		6		4
Total investments in unconsolidated entities	$	450	$	415

The following table, which is based in part on information provided by third parties, summarizes the combined results of operations of U.S. Cellular’s equity method investments.

	Three Months Ended March 31,
	2018		2017
(Dollars in millions)
Revenues	$	1,657	$	1,610
Operating expenses		1,208		1,212
Operating income		449		398
Other expense, net		(1)		–
Net income	$	448	$	398

38

Note 9Variable Interest Entities

Consolidated VIEs

U.S. Cellular consolidates variable interest entities (VIEs) in which it has a controlling financial interestas defined by GAAP and is therefore deemed the primary beneficiary.  A controlling financial interest will have both of the following characteristics: (a) the power to direct the VIE activities that most significantly impact economic performance; and (b) the obligation to absorb the VIE losses and the right to receive benefits that are significant to the VIE.  U.S. Cellular reviews these criteria initially at the time it enters into agreements and subsequently when events warranting reconsideration occur.These VIEshave risks similar to those described in the “Risk Factors” in U.S. Cellular’s Form 10-K for the year ended December 31, 2017.

During 2017, U.S. Cellular formed USCC EIP LLC (Seller/Sub-Servicer), USCC Receivables Funding LLC (Transferor) and the USCC Master Note Trust (Trust), special purpose entities (SPEs), to facilitate a securitized borrowing using its equipment installment plan receivables.  Under a Receivables Sale Agreement, U.S. Cellular wholly-owned, majority-owned and unconsolidated entities, collectively referred to as “affiliated entities”, will transfer device equipment installment plan contracts to the Seller/Sub-Servicer.  The Seller/Sub-Servicer will aggregate device equipment installment plan contracts, and perform servicing, collection and all other administrative activities related to accounting for the equipment installment plan contracts.  The Seller/Sub-Servicer will sell the eligible equipment installment plan receivables to the Transferor, a bankruptcy remote entity, which will subsequently sell the receivables to the Trust.  The Trust, which is bankruptcy remote and isolated from the creditors of U.S. Cellular, will be responsible for issuing asset-backed variable funding notes (Notes), which are collateralized by the equipment installment plan receivables owned by the Trust.  Given that U.S. Cellular has the power to direct the activities of these SPEs, and that these SPEs lack sufficient equity to finance their activities, U.S. Cellular is deemed to have a controlling financial interest in the SPEs and, therefore, consolidates them.  All transactions with third parties (e.g., issuance of the asset-backed variable funding notes) will be accounted for as a secured borrowing due to the pledging of equipment installment plan contracts as collateral, significant continuing involvement in the transferred assets, subordinated interests of the cash flows, and continued evidence of control of the receivables. 

The following VIEs were formed to participate in FCC auctions of wireless spectrum and to fund, establish, and provide wireless service with respect to any FCC licenses won in the auctions:

• Advantage Spectrum, L.P. (Advantage Spectrum) and Sunshine Spectrum, Inc., the general partner of Advantage Spectrum;
• Aquinas Wireless, L.P. (Aquinas Wireless); and
• King Street Wireless, L.P. (King Street Wireless) and King Street Wireless, Inc., the general partner of King Street Wireless.

These particular VIEs are collectively referred to as designated entities.  The power to direct the activities that most significantly impact the economic performance of these VIEs is shared.  Specifically, the general partner of these VIEs has the exclusive right to manage, operate and control the limited partnerships and make all decisions to carry on the business of the partnerships.  The general partner of each partnership needs the consent of the limited partner, an indirect U.S. Cellular subsidiary, to sell or lease certain licenses, to make certain large expenditures, admit other partners or liquidate the limited partnerships.  Although the power to direct the activities of these VIEs is shared, U.S. Cellular has the most significant level of exposure to the variability associated with the economic performance of the VIEs, indicating that U.S. Cellular is the primary beneficiary of the VIEs.  Therefore, in accordance with GAAP, these VIEs are consolidated.

In the first quarter of 2018, U.S. Cellular received an initial liquidating distribution of substantially all of the remaining assets of Aquinas Wireless.  The final liquidating distribution is expected during the second quarter of 2018, and Aquinas Wireless will then be subsequently dissolved.

U.S. Cellular also consolidates other VIEs that are limited partnerships that provide wireless service.  A limited partnership is a variable interest entity unless the limited partners hold substantive participating rights or kick-out rights over the general partner.  For certain limited partnerships, U.S. Cellular is the general partner and manages the operations.  In these partnerships, the limited partners do not have substantive kick-out or participating rights and, further, such limited partners do not have the authority to remove the general partner.  Therefore, these limited partnerships are also recognized as VIEs and are consolidated under the variable interest model. 

39

The following table presents the classification and balances of the consolidated VIEs’ assets and liabilities in U.S. Cellular’s Consolidated Balance Sheet.

			March 31,		December 31,
			2018		2017
(Dollars in millions)
Assets
	Cash and cash equivalents		$	1	$	3
	Accounts receivable			543		476
	Other current assets			8		8
	Licenses			654		655
	Property, plant and equipment, net			96		99
	Other assets and deferred charges			321		303
		Total assets	$	1,623	$	1,544
Liabilities
	Current liabilities		$	32	$	39
	Deferred liabilities and credits			14		13
		Total liabilities	$	46	$	52

Unconsolidated VIEs

U.S. Cellular manages the operations of and holds a variable interest in certain other limited partnerships, but is not the primary beneficiary of these entities and, therefore, does not consolidate them under the variable interest model.

U.S. Cellular’s total investment in these unconsolidated entities was $5million and $4 million at March 31, 2018 and December 31, 2017, respectively, and is included in Investments in unconsolidated entities in U.S. Cellular’s Consolidated Balance Sheet.  The maximum exposure from unconsolidated VIEs is limited to the investment held by U.S. Cellular in those entities. 

Other Related Matters

During the three months endedMarch 31, 2018 and 2017, U.S. Cellular made contributions, loans and/or advances to its VIEs totaling $19 million and $654 million, respectively; of these amounts $10 million and $650 million, respectively, are related to USCC EIP LLC as discussed above.  U.S. Cellular may agree to make additional capital contributions and/or advances to these or other VIEs and/or to their general partners to provide additional funding for operations or the development of licenses granted in various auctions.  U.S. Cellular may finance such amounts with a combination of cash on hand, borrowings under its revolving credit agreement and/or other long-term debt.  There is no assurance that U.S. Cellular will be able to obtain additional financing on commercially reasonable terms or at all to provide such financial support.

During the three months ended March 31, 2018, U.S. Cellular recorded out-of-period adjustments attributable to 2016 and 2017 due to errors in the application of accounting guidance applicable to the calculation of Noncontrolling interests with redemption features related to King Street Wireless, Inc. These out-of-period adjustments had the impactof increasing Net income attributable to noncontrolling interests, net of tax, by $8 million and decreasing Net income attributable to U.S. Cellular shareholders by $8 million for the three months ended March 31, 2018.  U.S. Cellular determined that these adjustments were not material to any of the periods impacted.

40

United States Cellular Corporation

Additional Required Information

Controls and Procedures

Evaluation of Disclosure Controls and Procedures

U.S. Cellular maintains disclosure controls and procedures (as defined in Rules13a-15(e)and 15d-15(e)under the Securities Exchange Act of 1934, as amended (the Exchange Act)) that are designed to ensure that information required to be disclosed in its reports filed or submitted under the Exchange Act is processed, recorded, summarized and reported within the time periods specified in the SEC’s rulesand forms, and that such information is accumulated and communicated to U.S. Cellular’s management, including its principal executive officer and principal financial officer, as appropriate, to allow for timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives.

As required by SEC Rules13a-15(b), U.S. Cellular carried out an evaluation, under the supervision and with the participation of management, including its principal executive officer and principal financial officer, of the effectiveness of the design and operation of U.S. Cellular’s disclosure controls and procedures as of the end of the period covered by this Quarterly Report. Based on this evaluation, U.S. Cellular’s principal executive officer and principal financial officer concluded that U.S. Cellular’s disclosure controls and procedures were effective as of March 31, 2018, at the reasonable assurance level.

Changes in Internal Control Over Financial Reporting

There have been no changes in internal controls over financial reporting that have occurred during the quarter endedMarch 31, 2018, that have materially affected, or are reasonably likely to materially affect, U.S. Cellular’s internal control over financial reporting, except as follows: U.S. Cellular implemented internal controls to ensure that, upon adoption of the new revenue recognition accounting standard, ASU 2014-09, effective January 1, 2018, and for all periods thereafter, contracts will be properly evaluated and any impacts to the financial statements will be recognized in accordance with this new accounting standard.

Legal Proceedings

The United States Department of Justice (DOJ) has notified U.S. Cellular and its parent, TDS, that it is conducting an inquiry of U.S. Cellular and TDS under the federal False Claims Act.  The DOJ is investigating U.S. Cellular’s participation in spectrum auction 73 conducted by the FCC in 2008.  U.S. Cellular is a limited partner in a limited partnership which qualified for the 25% bid credit in the auction.  TDS and U.S. Cellular are cooperating with the DOJ’s review.  TDS and U.S. Cellular believe that U.S. Cellular’s arrangements with the limited partnership and the limited partnerships’ participation in the FCC auctions complied with applicable law and FCC rules.  At this time, U.S. Cellular cannot predict the outcome of this review.

Refer to the disclosure under Legal Proceedings in U.S. Cellular’s Form 10-K for the year ended December 31, 2017, for additional information.  There have been no material changes to such information since December 31, 2017.

Unregistered Sales of Equity Securities and Use of Proceeds

In November 2009, U.S. Cellular announced by Form 8-K that the Board of Directors of U.S. Cellular authorized the repurchase of up to 1,300,000 Common Shares on an annual basis beginning in 2009 and continuing each year thereafter, on a cumulative basis. In December 2016, the U.S. Cellular Board amended this authorization to provide that, beginning on January 1, 2017, the authorized repurchase amount with respect to a particular year will be any amount from zero to 1,300,000, as determined by the Pricing Committee, and that if the Pricing Committee did not specify an amount for any year, such amount would be zero for such year. The Pricing Committee did not specify any amount as of January 1, 2018. The Pricing Committee also was authorized to decrease the cumulative amount of the authorization at any time, but has not taken any action to do so at this time. As a result, there was no change to the cumulative amount of the share repurchase authorization as of January 1, 2018. The authorization provides that share repurchases will be made pursuant to open market purchases, block purchases, private purchases, or otherwise, depending on market prices and other conditions. This authorization does not have an expiration date. U.S. Cellular did not determine to terminate the foregoing Common Share repurchase program, as amended, or cease making further purchases thereunder, during the first quarter of 2018.

The maximum number of shares that may yet be purchased under this program was 5,900,849 as of March 31, 2018.  There were no purchases made by or on behalf of U.S. Cellular, and no open market purchases made by any “affiliated purchaser” (as defined by the SEC) of U.S. Cellular, of U.S. Cellular Common Shares during the quarter covered by this Form 10-Q.

41

Other Information

The following information is being provided to update prior disclosures made pursuant to the requirements of Form 8-K, Item 2.03 — Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant.

U.S. Cellular did not borrow or repay any cash amounts under its revolving credit facility in the first quarter of 2018 or through the filing date of this Form 10-Q. U.S. Cellular had no cash borrowings outstanding under its revolving credit facility as of March 31, 2018, or as of the filing date of this Form 10-Q. 

Further, U.S. Cellular did not borrow or repay any cash amounts under its receivables securitization facility in the first quarter of 2018 or through the filing date of this Form 10-Q, and had no cash borrowings outstanding under its receivables securitization facility as of March 31, 2018, or as of the filing date of this Form 10-Q.

42

Exhibits

Exhibit Number	Description of Documents
Exhibit 10.1	Form of 2013 Long-Term Incentive Plan 2018 Performance Award Agreement for Officers other than the President and CEO is hereby incorporated by reference to Exhibit 10.1 to U.S. Cellular’s Current Report on Form 8-K dated March 12, 2018.
Exhibit 10.2	Form of 2013 Long-Term Incentive Plan 2018 Performance Award Agreement for the President and CEO is hereby incorporated by reference to Exhibit 10.2 to U.S. Cellular’s Current Report on Form 8-K dated March 12, 2018.
Exhibit 11	Statement regarding computation of per share earnings is included herein as Note 6 — Earnings Per Share in the Notes to Consolidated Financial Statements.
Exhibit 12	Statement regarding computation of ratio of earnings to fixed charges.
Exhibit 31.1	Principal executive officer certification pursuant to Rule 13a-14 of the Securities Exchange Act of 1934.
Exhibit 31.2	Principal financial officer certification pursuant to Rule 13a-14 of the Securities Exchange Act of 1934.
Exhibit 32.1	Principal executive officer certification pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code.
Exhibit 32.2	Principal financial officer certification pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code.
Exhibit 101.INS	XBRL Instance Document
Exhibit 101.SCH	XBRL Taxonomy Extension Schema Document
Exhibit 101.PRE	XBRL Taxonomy Presentation Linkbase Document
Exhibit 101.CAL	XBRL Taxonomy Calculation Linkbase Document
Exhibit 101.LAB	XBRL Taxonomy Label Linkbase Document
Exhibit 101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

The foregoing exhibits include only the exhibits that relate specifically to this Form 10-Q or that supplement the exhibits identified in U.S. Cellular’s Form 10-K for the year ended December 31, 2017.  Reference is made to U.S. Cellular’s Form 10-K for the year ended December 31, 2017, for a complete list of exhibits, which are incorporated herein except to the extent supplemented or superseded above.

43

Form 10-Q Cross Reference Index
Item Number			Page No.
Part I.	Financial Information
	Item 1.	Financial Statements (Unaudited)	22 - 27
		Notes to Consolidated Financial Statements	28 - 40
	Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	1 - 21
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	21
	Item 4.	Controls and Procedures	41
Part II.	Other Information
	Item 1.	Legal Proceedings	41
	Item1A.	Risk Factors	21
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	41
	Item 5.	Other Information	42
	Item 6.	Exhibits	43
Signatures			45

44

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		UNITED STATES CELLULAR CORPORATION
		(Registrant)
Date:	May 4, 2018		/s/ Kenneth R. Meyers
			Kenneth R. Meyers President and Chief Executive Officer (principal executive officer)
Date:	May 4, 2018		/s/ Steven T. Campbell
			Steven T. Campbell Executive Vice President-Finance, Chief Financial Officer and Treasurer (principal financial officer)
Date:	May 4, 2018		/s/ Douglas D. Shuma
			Douglas D. Shuma Chief Accounting Officer (principal accounting officer)
Date:	May 4, 2018		/s/ Douglas W. Chambers
			Douglas W. Chambers Vice President and Controller

45

EX-12

Exhibit 12

UNITED STATES CELLULAR CORPORATION

RATIO OF EARNINGS TO FIXED CHARGES

			Three Months Ended
			March 31,
			2018		2017
(Dollars in millions)
EARNINGS:
	Income before income taxes1		$	77	$	61
	Add (deduct):
		Equity in earnings of unconsolidated entities		(38)		(33)
		Distributions from unconsolidated entities		17		11
		Amortization of capitalized interest		2		2
		Income attributable to noncontrolling interests in subsidiaries   that do not have fixed charges		(10)		–
			$	48	$	41
	Add fixed charges:
		Consolidated interest expense2		29		28
		Interest portion (1/3) of consolidated rent expense		15		14
			$	92	$	83
FIXED CHARGES:
		Consolidated interest expense2	$	29	$	28
		Interest portion (1/3) of consolidated rent expense		15		14
			$	44	$	42
RATIO OF EARNINGS TO FIXED CHARGES				2.09		1.98
1		Amounts include $7 million and $17 million of Gain on license sales and exchanges, net in 2018 and 2017, respectively.
2		Interest expense on income tax contingencies is not included in fixed charges.

EX-31.1

Exhibit 31.1

Certification of principal executive officer

I, Kenneth R. Meyers, certify that:

1. I have reviewed this quarterly report on Form 10-Q of United States Cellular Corporation;
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

1. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
2. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
3. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
4. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

1. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
2. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:May 4, 2018

/s/ Kenneth R. Meyers

Kenneth R. Meyers

President and Chief Executive Officer

(principal executive officer)

EX-31.2

Exhibit 31.2

Certification of principal financial officer

I, Steven T. Campbell, certify that:

1. I have reviewed this quarterly report on Form 10-Q of United States Cellular Corporation;
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

1. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
2. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
3. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
4. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

1. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
2. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:May 4, 2018

/s/ Steven T. Campbell

Steven T. Campbell

Executive Vice President-Finance,

Chief Financial Officer and Treasurer

(principal financial officer)

EX-32.1

Exhibit 32.1

Certification Pursuant to Section 1350 of Chapter 63

of Title 18 of the United States Code

I, Kenneth R. Meyers, the principal executive officer of United States Cellular Corporation, certify that (i) the quarterly report on Form 10-Q for the first quarter of 2018 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of United States Cellular Corporation.

/s/ Kenneth R. Meyers

Kenneth R. Meyers

May 4, 2018

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to United States Cellular Corporation and will be retained by United States Cellular Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Certification Pursuant to Section 1350 of Chapter 63

of Title 18 of the United States Code

I, Steven T. Campbell, the principal financial officer of United States Cellular Corporation, certify that (i) the quarterly report on Form 10-Q for the first quarter of 2018 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of United States Cellular Corporation.

/s/ Steven T. Campbell

Steven T. Campbell

May 4, 2018

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to United States Cellular Corporation and will be retained by United States Cellular Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document And Entity Information	3 Months Ended
	Mar. 31, 2018 shares
Entity Registrant Name	United States Cellular Corporation
Entity Central Index Key	0000821130
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Trading Symbol	USM
Common Shares
Entity Common Stock, Shares Outstanding	52,210,981
Series A Common Shares
Entity Common Stock, Shares Outstanding	33,005,877

XML

Consolidated Statement Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating revenues
Service	$ 724	$ 746
Equipment sales	218	190
Total operating revenues	942	936
Operating expenses
System operations (excluding Depreciation, amortization and accretion reported below)	179	175
Cost of equipment sold	219	228
Selling, general and administrative (including charges from affiliates of $19 million and $21 million, respectively)	326	339
Depreciation, amortization and accretion	159	153
(Gain) loss on asset disposals, net	1	4
(Gain) loss on license sales and exchanges, net	(7)	(17)
Total operating expenses	877	882
Operating income	65	54
Investment and other income (expense)
Equity in earnings of unconsolidated entities	38	33
Interest and dividend income	4	3
Interest expense	(29)	(28)
Other, net	(1)	(1)
Total investment and other income	12	7
Income before income taxes	77	61
Income tax expense	22	33
Net income	55	28
Less: Net income attributable to noncontrolling interests, net of tax	10	2
Net income attributable to U.S. Cellular shareholders	$ 45	$ 26
Basic weighted average shares outstanding	85	85
Basic earnings per share attributable to U.S. Cellular shareholders	$ 0.52	$ 0.31
Diluted weighted average shares outstanding	86	86
Diluted earnings per share attributable to U.S. Cellular shareholders	$ 0.52	$ 0.31

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Consolidated Statement Of Operations Parenthetical - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating expenses
Selling, general and administrative, charges from affiliates	$ 19	$ 21

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Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income	$ 55	$ 28
Add (deduct) adjustments to reconcile net income to net cash flows from operating activities
Depreciation, amortization and accretion	159	153
Bad debts expense	19	24
Stock-based compensation expense	8	7
Deferred income taxes, net	15	1
Equity in earnings of unconsolidated entities	(38)	(33)
Distributions from unconsolidated entities	17	11
(Gain) loss on asset disposals, net	1	4
(Gain) loss on license sales and exchanges, net	(7)	(17)
Noncash interest	1
Changes in assets and liabilities from operations
Accounts receivable	69	26
Equipment installment plans receivable	(17)	(44)
Inventory	(2)	(3)
Accounts payable	(30)	(78)
Customer deposits and deferred revenues	(26)	(10)
Accrued taxes	5	22
Accrued interest	9	9
Other assets and liabilities	(50)	(39)
Net cash provided by operating activities	188	61
Cash flows from investing activities
Cash paid for additions to property, plant and equipment	(76)	(88)
Cash paid for licenses	(1)	(3)
Cash received for investments	50	0
Cash received from divestitures and exchanges	4	16
Net cash used in investing activities	(23)	(75)
Cash flows from financing activities
Repayment of long-term debt	(5)	(3)
Common shares reissued for benefit plans, net of tax payments	2	3
Other financing activities	(4)	0
Net cash used in financing activities	(7)
Net increase (decrease) in cash, cash equivalents and restricted cash	158	(14)
Cash, cash equivalents and restricted cash
Beginning of period	352	586
End of period	$ 510	$ 572

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Consolidated Balance Sheet - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents		$ 509	$ 352
Short-term investments		0	50
Accounts receivable
Customers and agents, less allowances of $56 and $55, respectively		789	775
Roaming		15	26
Affiliated		4	1
Other, less allowances of $1 and $1, respectively		35	41
Inventory, net		141	138
Prepaid expenses		66	79
Other current assets		32	21
Total current assets		1,591	1,483
Assets held for sale		6	10
Licenses		2,231	2,223
Investments in unconsolidated entities		450	415
Property, plant and equipment
In service and under construction		7,662	7,628
Less: Accumulated depreciation and amortization		5,429	5,308
Property, plant and equipment, net		2,233	2,320
Other assets and deferred charges		537	390
Total assets	[1]	7,048	6,841
Current liabilities
Current portion of long-term debt		18	18
Accounts payable
Affiliated		8	8
Trade		267	302
Customer deposits and deferred revenues		132	185
Accrued taxes		58	56
Accrued compensation		43	74
Other current liabilities		90	90
Total current liabilities		616	733
Deferred liabilities and credits
Deferred income tax liability, net		526	461
Other deferred liabilities and credits		359	337
Long-term debt, net		1,618	1,622
Commitments and contingencies
Noncontrolling interests with redemption features		11	1
U.S. Cellular shareholders' equity
Series A Common and Common Shares Authorized 190 shares (50 Series A Common and 140 Common Shares) Issued 88 shares (33 Series A Common and 55 Common Shares) Outstanding 85 shares (33 Series A Common and 52 Common Shares) Par Value ($1.00 per share) ($33 Series A Common and $55 Common Shares)		88	88
Additional paid-in capital		1,560	1,552
Treasury Shares, at cost, 3 Common Shares		(116)	(120)
Retained earnings		2,375	2,157
Total U.S. Cellular shareholders' equity		3,907	3,677
Noncontrolling interests		11	10
Total equity		3,918	3,687
Total liabilities and equity	[1]	$ 7,048	$ 6,841

[1] The consolidated total assets as of March 31, 2018 and December 31, 2017, include assets held by consolidated variable interest entities (VIEs) of $793 million and $785 million, respectively, which are not available to be used to settle the obligations of U.S. Cellular. The consolidated total liabilities as of March 31, 2018 and December 31, 2017, include certain liabilities of consolidated VIEs of $21 million and $24 million, respectively, for which the creditors of the VIEs have no recourse to the general credit of U.S. Cellular. See Note 9 — Variable Interest Entities for additional information.

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Consolidated Balance Sheet Parenthetical - USD ($) shares in Millions, $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Accounts receivable
Customer and agent allowances	$ 56	$ 55
Other allowances	$ 1	$ 1
U.S. Cellular shareholders' equity
Authorized shares	190	190
Issued shares	88	88
Outstanding shares	85	85
Par value	$ 88	$ 88
Variable Interest Entities VIEs
Total VIE assets that can be used to settle only the VIEs' obligations	793	785
Total VIE liabilities for which creditors have no recourse	$ 21	$ 24
Series A Common Shares
U.S. Cellular shareholders' equity
Authorized shares	50	50
Issued shares	33	33
Outstanding shares	33	33
Par value per share	$ 1.00	$ 1.00
Par value	$ 33	$ 33
Common Shares
U.S. Cellular shareholders' equity
Authorized shares	140	140
Issued shares	55	55
Outstanding shares	52	52
Par value per share	$ 1.00	$ 1.00
Par value	$ 55	$ 55
Treasury shares	3	3

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Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Series A Common and Common shares	Additional paid-in capital	Treasury shares	Retained earnings	Total U.S. Cellular shareholders' equity	Noncontrolling interests
Beginning balance at Dec. 31, 2016	$ 3,645	$ 88	$ 1,522	$ (136)	$ 2,160	$ 3,634	$ 11
Net income attributable to U.S. Cellular shareholders	26				26	26
Net income attributable to noncontrolling interests classified as equity	1						1
Incentive and compensation plans	3			4	(1)	3
Stock-based compensation awards	7		7			7
Ending balance at Mar. 31, 2017	3,682	88	1,529	(132)	2,185	3,670	12
Beginning balance at Dec. 31, 2017	3,687	88	1,552	(120)	2,157	3,677	10
Net income attributable to U.S. Cellular shareholders	45				45	45
Incentive and compensation plans	2			4	(2)	2
Stock-based compensation awards	8		8			8
Ending balance at Mar. 31, 2018	3,918	$ 88	$ 1,560	$ (116)	2,375	3,907	11
Cumulative effect of accounting change	$ 176				$ 175	$ 175	$ 1

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Basis of Presentation

3 Months Ended

Mar. 31, 2018

Basis of Presentation [Abstract]

Basis of Presentation

Note 1Basis of Presentation

United States Cellular Corporation (U.S. Cellular), a Delaware corporation, is an 83%-owned subsidiary of Telephone and Data Systems, Inc. (TDS).

The accounting policies of U.S. Cellular conform to accounting principles generally accepted in the United States of America (GAAP) as set forth in the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC).  The consolidated financial statements include the accounts of U.S. Cellular, subsidiaries in which it has a controlling financial interest, general partnerships in which U.S. Cellular has a majority partnership interest and certain entities in which U.S. Cellular has a variable interest that require consolidation under GAAP. All material intercompany accounts and transactions have been eliminated.

The unaudited consolidated financial statements included herein have been prepared by U.S. Cellular pursuant to the rulesand regulations of the Securities and Exchange Commission (SEC).  Certain information and disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rulesand regulations.  However, U.S. Cellular believes that the disclosures included herein are adequate to make the information presented not misleading. Certain numbers included herein are rounded to millions for ease of presentation; however, calculated amounts and percentages are determined using the unrounded numbers.  These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in U.S. Cellular’s Annual Report on Form10-K (Form10-K) for the year ended December 31, 2017.

The accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring items, unless otherwise disclosed) necessary for the fair statement of U.S. Cellular’s financial position as of March 31, 2018 and December 31, 2017, and its results of operations, cash flows and changes in equity for the three months ended March 31, 2018 and 2017.  The Consolidated Statement of Comprehensive Income was not included because comprehensive income for the three months ended March 31, 2018 and 2017, equaled net income. These results are not necessarily indicative of the results to be expected for the full year.  U.S. Cellular has not changed its significant accounting and reporting policies from those disclosed in its Form 10-K for the year ended December 31, 2017, except as described below and as disclosed in Note 2 — Revenue Recognition and Note 8— Investments in Unconsolidated Entities.

Restricted Cash

U.S. Cellular presents restricted cash with cash and cash equivalents in the Consolidated Statement of Cash Flows.  The following table provides a reconciliation of Cash and cash equivalents and restricted cash reported in the Consolidated Balance Sheet to the total of the amounts in the Consolidated Statement of Cash Flows as ofMarch 31, 2018 and December 31, 2017.

			March 31,		December 31,
			2018		2017
(Dollars in millions)
Cash and cash equivalents		$	509	$	352
Restricted cash included in:
	Other current assets		1		–
Cash, cash equivalents and restricted cash in the statement of cash flows		$	510	$	352

Recently Issued Accounting Pronouncements Not Yet Adopted

In February 2016, the FASB issued Accounting Standards Update 2016-02, Leases (ASU 2016-02).  ASU 2016-02 requires lessees to record a right-of-use asset and lease liability for almost all leases.  This ASU does not substantially impact the lessor accounting model.  However, some changes to the lessor accounting guidance were made to align with lessee accounting changes within Accounting Standards Codification (ASC) 842, Leases and certain key aspects of ASC 606, Revenue from Contracts with Customers.  Early adoption is permitted; however, U.S. Cellular plans to adopt ASU 2016-02 on a modified retrospective basis when required on January 1, 2019.  In January 2018, the FASB issued Accounting Standards Update 2018-01, Leases (ASU 2018-01), which permits an entity to elect an optional transition practical expedient to not evaluate land easements that exist or expired before the entities adoption of ASU 2016-02.  U.S. Cellular plans to adopt ASU 2018-01 in conjunction with its adoption of ASU 2016-02.  U.S. Cellular is evaluating the full effect that adoption of ASU 2016-02 and ASU 2018-01 will have on its financial condition, results of operations and disclosures.  Upon adoption, U.S. Cellular expects a substantial increase to assets and liabilities on its balance sheet and is in the process of implementing a new lease management and accounting system to assist in the application of the new standard.

In June 2016, the FASB issued Accounting Standards Update 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments (ASU 2016-13).  ASU 2016-13 requires entities to use a new forward-looking, expected loss model to estimate credit losses.  It also requires additional disclosure relating to the credit quality of trade and other receivables, including information relating to management’s estimate of credit allowances.  U.S. Cellular is required to adopt ASU 2016-13 on January 1, 2020, using the modified retrospective approach.  Early adoption is permitted as of January 1, 2019.  U.S. Cellular is evaluating the effects that adoption of ASU 2016-13 will have on its financial position, results of operations and disclosures.

Amounts Collected from Customers and Remitted to Governmental Authorities

U.S. Cellular records amounts collected from customers and remitted to governmental authorities on a net basis within a tax liability account if the tax is assessed upon the customer and U.S. Cellular merely acts as an agent in collecting the tax on behalf of the imposing governmental authority.  If the tax is assessed upon U.S. Cellular, then amounts collected from customers as recovery of the tax are recorded in Service revenues and amounts remitted to governmental authorities are recorded in Selling, general and administrative expenses in the Consolidated Statement of Operations.  The amounts recorded gross in revenues that are billed to customers and remitted to governmental authorities totaled $17million and $14 million for the three months ended March 31, 2018 and 2017, respectively.

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Revenue Recognition

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Note 2 Revenue Recognition

Change in Accounting Policy

In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers and has since amended the standard with Accounting Standards Update 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, Accounting Standards Update 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net), Accounting Standards Update 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing, Accounting Standards Update 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients, and Accounting Standards Update 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, collectively referred to hereinafter as ASU 2014-09.  These standards replace existing revenue recognition rules with a single comprehensive model to use in accounting for revenue arising from contracts with customers.  In February 2017, the FASB issued Accounting Standards Update 2017-05, Other Income – Gains and Losses from the Derecognition of Nonfinancial Assets:  Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (ASU 2017-05).  ASU 2017-05 clarifies how entities account for the derecognition of a nonfinancial asset and adds guidance for partial sales of nonfinancial assets.  U.S. Cellular adopted the provisions of ASU 2014-09 and ASU 2017-05 and applied them to all contracts as of January 1, 2018, using a modified retrospective method.  Under this method, the new accounting standard is applied only to the most recent period presented, recognizing the cumulative effect of the accounting change as an adjustment to the beginning balance of retained earnings.  Accordingly, prior periods have not been recast to reflect the new accounting standard.  The cumulative effect of applying the provisions of ASU 2014-09 resulted in an increase of $175 million in retained earnings as of January 1, 2018.  ASU 2017-05 had no impact to retained earnings as of January 1, 2018.

As a practical expedient, U.S. Cellular groups similar contracts or similar performance obligations together into portfolios of contracts or performance obligations if doing so does not result in a significant difference from applying the new accounting standard to the individual contracts.  U.S. Cellular applies this grouping method for the following types of transactions: device activation fees, contract acquisition costs, and certain customer promotions.  Contract portfolios will be recognized over the respective expected customer lives or terms of the contracts. 

The line items impacted by the adoption of ASU 2014-09 and ASU 2017-05 in the Consolidated Statement of Operations and the Consolidated Balance Sheet are presented below. 

Consolidated Statement of Operations

	Results under prior accounting standards
			Adjustment		As reported
Three Months Ended March 31, 2018
(Dollars and shares in millions, except per share amounts)
Operating revenues
Service	$	754	$	(30)	$	724
Equipment sales		198		20		218
Total operating revenues		952		(10)		942
Cost of equipment sold		222		(3)		219
(Gain) loss on license sales and exchanges, net		(6)		(1)		(7)
Total operating expenses		882		(5)		877
Operating income (loss)		70		(5)		65
Income (loss) before income taxes		82		(5)		77
Income tax expense (benefit)		24		(2)		22
Net income (loss)		58		(3)		55
Net income (loss) attributable to U.S. Cellular shareholders		48		(3)		45
Basic earnings (loss) per share attributable to
U.S. Cellular shareholders	$	0.56	$	(0.04)	$	0.52
Diluted earnings (loss) per share attributable to
U.S. Cellular shareholders	$	0.56	$	(0.04)	$	0.52

The decrease in Service revenues and the increase in Equipment sales revenues are driven primarily by differences in the timing and classification of revenue recognized for certain arrangements with multiple performance obligations and ceasing to record deferred imputed interest and the resulting interest income on equipment installment contracts.  Under prior accounting standards, revenues were allocated to deliverables using the relative selling price method, where consideration was allocated to each element on the basis of its relative selling price.  Revenue recognized for the delivered items was limited to the amount due from the customer that was not contingent upon the delivery of additional products or services.  Under ASU 2014-09, the revenue allocation of the transaction price is based on the relative standalone selling prices of the individual performance obligations in the customer’s contract, and the resulting revenue attributable to each is recognized as control over the performance obligation is transferred to the customer.  This has resulted in increased Equipment sales revenues as more revenue is allocated to discounted equipment than under prior accounting standards.  Under prior accounting standards, U.S. Cellular deferred imputed interest related to equipment installment plan receivable contracts that exceeded twelve months, and recognized the corresponding interest income over the contract period in Service revenues.  Under the provisions of ASU 2014-09, U.S. Cellular has determined that equipment installment plan contracts do not contain a significant financing component, and accordingly U.S. Cellular ceased recording deferred imputed interest and the resulting interest income on equipment installment contracts upon the adoption of ASU 2014-09. 

Cost of equipment sold decreased due to a change in timing of recognition of cost of goods sold in the agent channel.  Under prior accounting standards, Equipment sales to agents and the related Cost of equipment sold was recognized when equipment was sold through from the agent to end user customers.  In accordance with the provisions of ASU 2014-09, such amounts are recognized when U.S. Cellular delivers the equipment to the agent. 

Under ASU 2017-05, (Gain) loss on license sales and exchanges, net is calculated by subtracting the carrying amount of the distinct asset being disposed from the consideration measured and allocated to that distinct asset.  The consideration, or transaction price, is the fair value of the licenses received.  Under prior accounting standards, the transaction price was typically the fair value of the licenses surrendered.  This change in guidance has resulted in a decrease in (Gain) loss on license sales and exchanges, net. 

Consolidated Balance Sheet

	Results under prior accounting standards
			Adjustment		As reported
As of March 31, 2018
(Dollars in millions)
Accounts receivable
Customers and agents, less allowances	$	730	$	59	$	789
Roaming		26		(11)		15
Prepaid expenses		87		(21)		66
Other current assets		19		13		32
Total current assets		1,550		41		1,591
Licenses		2,230		1		2,231
Investments in unconsolidated entities		436		14		450
Other assets and deferred charges		383		154		537
Total assets		6,838		210		7,048
Customer deposits and deferred revenues		158		(26)		132
Accrued taxes		59		(1)		58
Other current liabilities		86		4		90
Total current liabilities		638		(22)		616
Deferred income tax liability, net		477		49		526
Other deferred liabilities and credits		349		10		359
Retained earnings		2,203		172		2,375
Total U.S. Cellular shareholders' equity		3,735		172		3,907
Noncontrolling interests		10		1		11
Total equity		3,745		173		3,918
Total liabilities and equity		6,838		210		7,048

As a result of adoption of ASU 2014-09, U.S. Cellular recorded short-term and long-term contract assets and contract liabilities in its Consolidated Balance Sheet as of March 31, 2018.  Under ASU 2014-09, the timing of recognition of revenue for each performance obligation may differ from the timing of the customer billing, creating a contract asset or contract liability.  See Contract Balances below for additional information.  Contract assets are included in Other current assets if short-term in nature or Other assets and deferred charges if long-term in nature.  Short-term contract liabilities are classified as Customer deposits and deferred revenues and long-term contract liabilities are included in Other deferred liabilities and credits.  Accounts receivable increased as a result of U.S. Cellular ceasing to record deferred imputed interest.  Certain prepaid expenses have been reclassified as contract cost assets, which are a component of Other assets and deferred charges.  Investments in unconsolidated entities increased due to the cumulative effect of applying the provisions of ASU 2014-09 to certain of U.S. Cellular’s equity method investments as of January 1, 2018. Deferred income tax liabilities, net, increased due to the provisions of ASU 2014-09 increasing the net basis of assets on a U.S. GAAP basis, without a corresponding increase in tax basis. Contract cost assets have also been created as a result of ASU 2014-09 due to capitalization of costs to obtain a new contract.  See Contract Cost Assets below for additional information.

Nature of goods and services

The following is a description of principal activities from which U.S. Cellular generates its revenues.

Services and products	Nature, timing of satisfaction of performance obligations, and significant payment terms
Wireless services	Wireless service includes voice, messaging and data services.  Revenue is recognized in Service revenues as wireless service is provided to the customer.  Wireless services are generally billed and paid in advance on a monthly basis.
Wireless devices and accessories	U.S. Cellular offers a comprehensive range of wireless devices such as handsets, modems, mobile hotspots, home phones and tablets for use by its customers, as well as accessories.  U.S. Cellular also sells wireless devices to agents and other third-party distributors for resale.  U.S. Cellular frequently discounts wireless devices sold to new and current customers.  U.S. Cellular also offers customers the option to purchase certain devices under installment contracts over a specified time period.  For certain equipment installment plans, after a specified period of time, the customer may have the right to upgrade to a new device.  Such upgrades require the customer to enter into an equipment installment contract for the new device, and transfer the existing device to U.S. Cellular.  U.S. Cellular recognizes revenue in Equipment sales revenues when control of the device or accessory is transferred to the customer, which is generally upon delivery.
Wireless roaming	U.S. Cellular receives roaming revenues when other wireless carriers’ customers use U.S. Cellular’s wireless systems.  U.S. Cellular recognizes revenue in Service revenues when the roaming service is provided to the other carrier’s customer.
Wireless Eligible Telecommunications Carrier (ETC) Revenues	Telecommunications companies may be designated by states, or in some cases by the FCC, as an ETC to receive support payments from the Universal Service Fund if they provide specified services in “high cost” areas. ETC revenues recognized in the reporting period represent the amounts which U.S.Cellular is entitled to receive for such period, as determined and approved in connection with U.S.Cellular’s designation as an ETC in various states.
Wireless tower rents	U.S. Cellular receives tower rental revenues when another carrier leases tower space on a U.S. Cellular owned tower.  U.S. Cellular recognizes revenue in Service revenues in the period during which the services are provided.
Activation fees	U.S. Cellular charges its end customers activation fees in connection with the sale of certain services and equipment. These fees are deferred and recognized over the period benefitted.

Significant Judgments

U.S. Cellular sells bundled service and equipment offerings.  In these instances, U.S. Cellular recognizes its revenue based on the relative standalone selling prices for each distinct service or equipment performance obligation, or bundles thereof.  Revenues from sales of equipment are recognized when control has transferred to the customer.  Service revenues are recognized as the related service is provided.  Services are deemed to be highly interrelated when the method and timing of transfer and performance risk are the same.  Highly interrelated services that are determined to not be distinct have been grouped into a single performance obligation.  Each month of services promised is a performance obligation.  The series of monthly service performance obligations promised over the course of the contract are combined into a single performance obligation for purposes of the allocation. 

U.S. Cellular has made judgments regarding transaction price, including but not limited to issues relating to variable consideration, time value of money and returns.  When determined to be significant in the context of the contract, these items are considered in the valuation of transaction price at contract inception or modification, as appropriate. 

Disaggregation of Revenue

In the following table, revenue is disaggregated by type of service and timing of revenue recognition.  Service revenues are recognized over time and Equipment sales are point in time.  

		Three Months Ended
		March 31, 2018
(Dollars in millions)
Revenues from contracts with customers:
Retail service		$	649
Inbound roaming			27
Other service			32
Service revenues from contracts with customers			708
Equipment sales			218
Total revenues from contracts with customers 1		$	926
1	These amounts do not include revenues outside the scope of ASU 2014-09; therefore, revenue line items in this table will not agree to amounts presented in the Consolidated Statement of Operations.

Contract Balances

For contracts that involve multiple element service and equipment offerings, the transaction price is allocated to each performance obligation based on its relative standalone selling price.  When payment is collected in advance of delivery of goods or services, a contract liability is recorded.  A contract asset is recorded when revenue is recognized in advance of U.S. Cellular’s right to receive consideration.  Once there is an unconditional right to receive the consideration, U.S. Cellular bills the customer under the terms of the respective contract and the amounts are recorded as receivables.

U.S. Cellular recognizes Equipment sales revenue when the equipment is delivered to the customer and a corresponding contract asset or liability is recorded for the difference between the amount of revenue recognized and the amount billed to the customer in cases where discounts are offered.  The contract asset or liability is reduced over the contract term as service is provided and billed to the customer.

The accounts receivable balance related to amounts billed and not paid on contracts with customers, net of allowances, is shown in the table below.  Bad debts expense recognized for the three months ended March 31, 2018, related to receivables was $19 million.

		Three Months Ended
		March 31, 2018
(Dollars in millions)
Accounts receivable
Customer and agents		$	789
Roaming			15
Other			27
Total 1		$	831
1	These amounts do not include accounts receivable related to revenues outside the scope of ASU 2014-09; therefore, accounts receivable line items presented in this table will not agree to amounts presented in the Consolidated Balance Sheet.

The following table provides a rollforward of contract assets from contracts with customers, which are recorded in Other current assets and Other assets and deferred charges in the Consolidated Balance Sheet.

	Contract Assets
(Dollars in millions)
Balance at December 31, 2017	$	–
Change in accounting policy		26
Contract additions		8
Terminated contracts		(1)
Bad debts expense		–
Revenue recognized		(8)
Balance at March 31, 2018	$	25

The following table provides a rollforward of contract liabilities from contracts with customers, which are recorded in Customer deposits and deferred revenues and Other deferred liabilities and credits in the Consolidated Balance Sheet.

		Contract Liabilities
(Dollars in millions)
Balance at December 31, 2017		$	–
Change in accounting policy - Deferred revenues reclassification 1			167
Change in accounting policy - Retained earnings impact			(21)
Contract additions			24
Terminated contracts			–
Revenue recognized			(43)
Balance at March 31, 2018		$	127
1	This amount represents U.S. Cellular's obligation to transfer goods or services to customers for which it had received payment and classified as deferred revenue at December 31, 2017.

Transaction price allocated to the remaining performance obligations

The following table includes estimated service revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period. These estimates are based on contracts in place as of March 31, 2018, and may vary from actual results due to future contract modifications.  As a practical expedient, revenue related to contracts of less than one year, generally contracts with month-to-month customers, are excluded from these estimates. 

		Service Revenue
(Dollars in millions)
Remainder of 2018		$	244
2019			86
Thereafter			3
	Total	$	333

U.S. Cellular has certain contracts in which it bills customers an amount equal to a fixed per-unit price multiplied by a variable quantity.  Because U.S. Cellular invoices customers in an amount that corresponds directly with the value to the customer of the entity’s performance completed to date, U.S. Cellular may recognize revenue in that amount.  As a practical expedient, these contracts will be excluded from the estimate of future revenues expected to be recognized related to performance obligations that are unsatisfied as of the end of a reporting period. 

Contract Cost Assets

U.S. Cellular expects that incremental commission fees paid as a result of obtaining contracts are recoverable and therefore U.S. Cellular capitalizes these costs.  As a practical expedient, costs with an amortization period of one year or less are not capitalized.  The contract cost asset balance related to commission fees was $133 million at March 31, 2018, and was recorded in Other assets and deferred charges in the Consolidated Balance Sheet.  Capitalized commission fees are amortized based on the transfer of the goods or services to which the assets relate, typically the contract term.  Amortization of contract cost assets was $27 million for the three months ended March 31, 2018, and was included in Selling, general and administrative expense.  There was no impairment loss recognized for the three months ended March 31, 2018, related to contract cost assets.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 3Fair Value Measurements

As of March 31, 2018 and December 31, 2017, U.S. Cellular did not have any material financial or nonfinancial assets or liabilities that were required to be recorded at fair value in its Consolidated Balance Sheet in accordance with GAAP.

The provisions of GAAP establish a fair value hierarchy that contains three levels for inputs used in fair value measurements.  Level 1 inputs include quoted market prices for identical assets or liabilities in active markets.  Level 2 inputs include quoted market prices for similar assets and liabilities in active markets or quoted market prices for identical assets and liabilities in inactive markets.  Level 3 inputs are unobservable.  A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.  A financial instrument’s level within the fair value hierarchy is not representative of its expected performance or its overall risk profile and, therefore, Level 3 assets are not necessarily higher risk than Level 2 assets or Level 1 assets.

U.S. Cellular has applied the provisions of fair value accounting for purposes of computing the fair value of financial instruments for disclosure purposes as displayed below.

		Level within the Fair Value Hierarchy	March 31, 2018				December 31, 2017
			Book Value		Fair Value		Book Value		Fair Value
(Dollars in millions)
Cash and cash equivalents		1	$	509	$	509	$	352	$	352
Short-term investments		1		–		–		50		50
Long-term debt
	Retail	2		917		944		917		939
	Institutional	2		534		555		534		522
	Other	2		188		188		191		191

The fair values of Cash and cash equivalents and Short-term investments approximate their book values due to the short-term nature of these financial instruments.  Long-term debt excludes capital lease obligations, other installment arrangements, the current portion of Long-term debt and debt financing costs.  The fair value of “Retail” Long-term debt was estimated using market prices for the 6.95% Senior Notes, 7.25% 2063 Senior Notes and 7.25% 2064 Senior Notes.  U.S. Cellular’s “Institutional” debt consists of the 6.7% Senior Notes which are traded over the counter.  U.S. Cellular’s “Other” debt consists of a senior term loan credit facility.  U.S. Cellular estimated the fair value of its Institutional and Other debt through a discounted cash flow analysis using the interest rates or estimated yield to maturity for each borrowing, which ranged from 4.58%to 6.34% and4.74% to 7.13% at March 31, 2018 and December 31, 2017, respectively.

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Equipment Installment Plans

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Equipment Installment Plans

Note 4Equipment Installment Plans

U.S. Cellular sells devices to customers under equipment installment plans over a specified time period.  For certain equipment installment plans, after a specified period of time or amount of payments, the customer may have the right to upgrade to a new device and have the remaining unpaid equipment installment contract balance waived, subject to certain conditions, including trading in the original device in good working condition and signing a new equipment installment contract.  U.S. Cellular values this trade-in right as a guarantee liability.  The guarantee liability is initially measured at fair value and is determined based on assumptions including the probability and timing of the customer upgrading to a new device and the fair value of the device being traded-in at the time of trade-in.  When a customer exercises the trade-in option, both the outstanding receivable and guarantee liability balances related to the respective device are reduced to zero, and the value of the used device that is received in the transaction is recognized as inventory.  If the customer does not exercise the trade-in option at the time of eligibility, U.S. Cellular begins amortizing the liability and records this amortization as additional equipment revenue.  As of March 31, 2018 and December 31, 2017, the guarantee liability related to these plans was $13million and $15 million, respectively, and is reflected in Customer deposits and deferred revenues in the Consolidated Balance Sheet.

The following table summarizes equipment installment plan receivables as of March 31, 2018 and December 31, 2017.

	March 31, 2018		December 31, 2017
(Dollars in millions)
Equipment installment plan receivables, gross	$	871	$	873
Deferred interest		–		(80)
Equipment installment plan receivables, net of deferred interest		871		793
Allowance for credit losses		(66)		(65)
Equipment installment plan receivables, net	$	805	$	728
Net balance presented in the Consolidated Balance Sheet as:
Accounts receivable — Customers and agents (Current portion)	$	496	$	428
Other assets and deferred charges (Non-current portion)		309		300
Equipment installment plan receivables, net	$	805	$	728

U.S. Cellular uses various inputs, including internal data, information from the credit bureaus and other sources, to evaluate the credit profiles of its customers.  From this evaluation, a credit class is assigned to the customer that determines the number of eligible lines, the amount of credit available, and the down payment requirement, if any.  Customers assigned to credit classes requiring no down payment represent a lower risk category, whereas those assigned to credit classes requiring a down payment represent a higher risk category.  The balance and aging of the equipment installment plan receivables on a gross basis by credit category were as follows:

	March 31, 2018						December 31, 2017
	Lower Risk		Higher Risk		Total		Lower Risk		Higher Risk		Total
(Dollars in millions)
Unbilled	$	809	$	19	$	828	$	807	$	20	$	827
Billed — current		28		1		29		31		1		32
Billed — past due		12		2		14		12		2		14
Equipment installment plan receivables, gross	$	849	$	22	$	871	$	850	$	23	$	873

Activity for the three months ended March 31, 2018 and 2017, in the allowance for credit losses balance for the equipment installment plan receivables was as follows:

	March 31, 2018		March 31, 2017
(Dollars in millions)
Allowance for credit losses, beginning of period	$	65	$	50
Bad debts expense		14		15
Write-offs, net of recoveries		(13)		(12)
Allowance for credit losses, end of period	$	66	$	53

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 5Income 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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Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings per Share

Note 6Earnings Per Share

Basic earnings per share attributable to U.S. Cellular shareholders is computed by dividing Net income attributable to U.S. Cellular shareholders by the weighted average number of common shares outstanding during the period.  Diluted earnings per share attributable to U.S. Cellular shareholders is computed by dividing Net income attributable to U.S. Cellular shareholders by the weighted average number of common shares outstanding during the period adjusted to include the effects of potentially dilutive securities.  Potentially dilutive securities primarily include incremental shares issuable upon the exercise of outstanding stock options and the vesting of performance and restricted stock units.

The amounts used in computing earnings per common share and the effects of potentially dilutive securities on the weighted average number of common shares were as follows:

	Three Months Ended
	March 31,
	2018		2017
(Dollars and shares in millions, except per share amounts)
Net income attributable to U.S. Cellular shareholders	$	45	$	26
Weighted average number of shares used in basic   earnings per share		85		85
Effects of dilutive securities		1		1
Weighted average number of shares used in diluted   earnings per share		86		86
Basic earnings per share attributable to U.S. Cellular   shareholders	$	0.52	$	0.31
Diluted earnings per share attributable to   U.S. Cellular shareholders	$	0.52	$	0.31

Certain Common Shares issuable upon the exercise of stock options or vesting of performance and restricted stock units were not included in average diluted shares outstanding for the calculation of Diluted earnings per share attributable to U.S. Cellular shareholders because their effects were antidilutive.  The number of such Common Shares excluded was 2 million for both the three months ended March 31, 2018 and 2017.

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Intangible Assets

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Note 7Intangible Assets

Activity related to Licenses for the three months endedMarch 31, 2018, is presented below:

Licenses
(Dollars in millions)
Balance at December 31, 2017		$	2,223
	Acquisitions		1
	Transferred to Assets held for sale		(10)
	Exchanges - Licenses received		18
	Exchanges - Licenses surrendered		(1)
Balance at March 31, 2018		$	2,231

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Investments in Unconsolidated Entities

3 Months Ended

Mar. 31, 2018

Investments in Unconsolidated Entities [Abstract]

Investments in Unconsolidated Entities

Note 8Investments in Unconsolidated Entities

Investments in unconsolidated entities consist of amounts invested in wireless entities in which U.S. Cellular holds a noncontrolling interest.  On January 1, 2018, U.S. Cellular adopted Accounting Standards Update 2016-01, Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01) using the modified retrospective approach.  The adoption of ASU 2016-01 did not have a significant impact on U.S. Cellular’s financial position or results of operations. 

U.S. Cellular’s Investments in unconsolidated entities are accounted for using either the equity method or measurement alternative method as shown in the table below.  The measurement alternative method was elected for investments without readily determinable fair values formerly accounted for under the cost method.  The measurement alternative fair value represents cost minus any impairments plus or minus any observable price changes.  U.S. Cellular did not have an impairment or observable price change related to these investments for the three months ended March 31, 2018.

	March 31,		December 31,
	2018		2017
(Dollars in millions)
Equity method investments	$	444	$	411
Measurement alternative method investments		6		4
Total investments in unconsolidated entities	$	450	$	415

The following table, which is based in part on information provided by third parties, summarizes the combined results of operations of U.S. Cellular’s equity method investments.

	Three Months Ended March 31,
	2018		2017
(Dollars in millions)
Revenues	$	1,657	$	1,610
Operating expenses		1,208		1,212
Operating income		449		398
Other expense, net		(1)		–
Net income	$	448	$	398

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Variable Interest Entities

3 Months Ended

Mar. 31, 2018

Variable Interest Entities [Abstract]

Variable Interest Entities

Note 9Variable Interest Entities

Consolidated VIEs

U.S. Cellular consolidates variable interest entities (VIEs) in which it has a controlling financial interestas defined by GAAP and is therefore deemed the primary beneficiary.  A controlling financial interest will have both of the following characteristics: (a) the power to direct the VIE activities that most significantly impact economic performance; and (b) the obligation to absorb the VIE losses and the right to receive benefits that are significant to the VIE.  U.S. Cellular reviews these criteria initially at the time it enters into agreements and subsequently when events warranting reconsideration occur.These VIEshave risks similar to those described in the “Risk Factors” in U.S. Cellular’s Form 10-K for the year ended December 31, 2017.

During 2017, U.S. Cellular formed USCC EIP LLC (Seller/Sub-Servicer), USCC Receivables Funding LLC (Transferor) and the USCC Master Note Trust (Trust), special purpose entities (SPEs), to facilitate a securitized borrowing using its equipment installment plan receivables.  Under a Receivables Sale Agreement, U.S. Cellular wholly-owned, majority-owned and unconsolidated entities, collectively referred to as “affiliated entities”, will transfer device equipment installment plan contracts to the Seller/Sub-Servicer.  The Seller/Sub-Servicer will aggregate device equipment installment plan contracts, and perform servicing, collection and all other administrative activities related to accounting for the equipment installment plan contracts.  The Seller/Sub-Servicer will sell the eligible equipment installment plan receivables to the Transferor, a bankruptcy remote entity, which will subsequently sell the receivables to the Trust.  The Trust, which is bankruptcy remote and isolated from the creditors of U.S. Cellular, will be responsible for issuing asset-backed variable funding notes (Notes), which are collateralized by the equipment installment plan receivables owned by the Trust.  Given that U.S. Cellular has the power to direct the activities of these SPEs, and that these SPEs lack sufficient equity to finance their activities, U.S. Cellular is deemed to have a controlling financial interest in the SPEs and, therefore, consolidates them.  All transactions with third parties (e.g., issuance of the asset-backed variable funding notes) will be accounted for as a secured borrowing due to the pledging of equipment installment plan contracts as collateral, significant continuing involvement in the transferred assets, subordinated interests of the cash flows, and continued evidence of control of the receivables. 

The following VIEs were formed to participate in FCC auctions of wireless spectrum and to fund, establish, and provide wireless service with respect to any FCC licenses won in the auctions:

• Advantage Spectrum, L.P. (Advantage Spectrum) and Sunshine Spectrum, Inc., the general partner of Advantage Spectrum;
• Aquinas Wireless, L.P. (Aquinas Wireless); and
• King Street Wireless, L.P. (King Street Wireless) and King Street Wireless, Inc., the general partner of King Street Wireless.

These particular VIEs are collectively referred to as designated entities.  The power to direct the activities that most significantly impact the economic performance of these VIEs is shared.  Specifically, the general partner of these VIEs has the exclusive right to manage, operate and control the limited partnerships and make all decisions to carry on the business of the partnerships.  The general partner of each partnership needs the consent of the limited partner, an indirect U.S. Cellular subsidiary, to sell or lease certain licenses, to make certain large expenditures, admit other partners or liquidate the limited partnerships.  Although the power to direct the activities of these VIEs is shared, U.S. Cellular has the most significant level of exposure to the variability associated with the economic performance of the VIEs, indicating that U.S. Cellular is the primary beneficiary of the VIEs.  Therefore, in accordance with GAAP, these VIEs are consolidated.

In the first quarter of 2018, U.S. Cellular received an initial liquidating distribution of substantially all of the remaining assets of Aquinas Wireless.  The final liquidating distribution is expected during the second quarter of 2018, and Aquinas Wireless will then be subsequently dissolved. 

U.S. Cellular also consolidates other VIEs that are limited partnerships that provide wireless service.  A limited partnership is a variable interest entity unless the limited partners hold substantive participating rights or kick-out rights over the general partner.  For certain limited partnerships, U.S. Cellular is the general partner and manages the operations.  In these partnerships, the limited partners do not have substantive kick-out or participating rights and, further, such limited partners do not have the authority to remove the general partner.  Therefore, these limited partnerships are also recognized as VIEs and are consolidated under the variable interest model. 

The following table presents the classification and balances of the consolidated VIEs’ assets and liabilities in U.S. Cellular’s Consolidated Balance Sheet.

			March 31,		December 31,
			2018		2017
(Dollars in millions)
Assets
	Cash and cash equivalents		$	1	$	3
	Accounts receivable			543		476
	Other current assets			8		8
	Licenses			654		655
	Property, plant and equipment, net			96		99
	Other assets and deferred charges			321		303
		Total assets	$	1,623	$	1,544
Liabilities
	Current liabilities		$	32	$	39
	Deferred liabilities and credits			14		13
		Total liabilities	$	46	$	52

Unconsolidated VIEs

U.S. Cellular manages the operations of and holds a variable interest in certain other limited partnerships, but is not the primary beneficiary of these entities and, therefore, does not consolidate them under the variable interest model.

U.S. Cellular’s total investment in these unconsolidated entities was $5million and $4 million at March 31, 2018 and December 31, 2017, respectively, and is included in Investments in unconsolidated entities in U.S. Cellular’s Consolidated Balance Sheet.  The maximum exposure from unconsolidated VIEs is limited to the investment held by U.S. Cellular in those entities. 

Other Related Matters

During the three months endedMarch 31, 2018 and 2017, U.S. Cellular made contributions, loans and/or advances to its VIEs totaling $19 million and $654 million, respectively; of these amounts $10 million and $650 million, respectively, are related to USCC EIP LLC as discussed above.  U.S. Cellular may agree to make additional capital contributions and/or advances to these or other VIEs and/or to their general partners to provide additional funding for operations or the development of licenses granted in various auctions.  U.S. Cellular may finance such amounts with a combination of cash on hand, borrowings under its revolving credit agreement and/or other long-term debt.  There is no assurance that U.S. Cellular will be able to obtain additional financing on commercially reasonable terms or at all to provide such financial support.

During the three months ended March 31, 2018, U.S. Cellular recorded out-of-period adjustments attributable to 2016 and 2017 due to errors in the application of accounting guidance applicable to the calculation of Noncontrolling interests with redemption features related to King Street Wireless, Inc. These out-of-period adjustments had the impactof increasing Net income attributable to noncontrolling interests, net of tax, by $8 million and decreasing Net income attributable to U.S. Cellular shareholders by $8 million for the three months ended March 31, 2018.  U.S. Cellular determined that these adjustments were not material to any of the periods impacted.

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

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Principles of Consolidation

The accounting policies of U.S. Cellular conform to accounting principles generally accepted in the United States of America (GAAP) as set forth in the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC).  The consolidated financial statements include the accounts of U.S. Cellular, subsidiaries in which it has a controlling financial interest, general partnerships in which U.S. Cellular has a majority partnership interest and certain entities in which U.S. Cellular has a variable interest that require consolidation under GAAP. All material intercompany accounts and transactions have been eliminated.

Basis of Accounting

The unaudited consolidated financial statements included herein have been prepared by U.S. Cellular pursuant to the rulesand regulations of the Securities and Exchange Commission (SEC).  Certain information and disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rulesand regulations.  However, U.S. Cellular believes that the disclosures included herein are adequate to make the information presented not misleading. Certain numbers included herein are rounded to millions for ease of presentation; however, calculated amounts and percentages are determined using the unrounded numbers.  These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in U.S. Cellular’s Annual Report on Form10-K (Form10-K) for the year ended December 31, 2017.

The accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring items, unless otherwise disclosed) necessary for the fair statement of U.S. Cellular’s financial position as of March 31, 2018 and December 31, 2017, and its results of operations, cash flows and changes in equity for the three months ended March 31, 2018 and 2017.  The Consolidated Statement of Comprehensive Income was not included because comprehensive income for the three months ended March 31, 2018 and 2017, equaled net income. These results are not necessarily indicative of the results to be expected for the full year.  U.S. Cellular has not changed its significant accounting and reporting policies from those disclosed in its Form 10-K for the year ended December 31, 2017, except as described below and as disclosed in Note 2 — Revenue Recognition and Note 8— Investments in Unconsolidated Entities.

Restricted Cash

Restricted Cash

U.S. Cellular presents restricted cash with cash and cash equivalents in the Consolidated Statement of Cash Flows.  The following table provides a reconciliation of Cash and cash equivalents and restricted cash reported in the Consolidated Balance Sheet to the total of the amounts in the Consolidated Statement of Cash Flows as ofMarch 31, 2018 and December 31, 2017.

			March 31,		December 31,
			2018		2017
(Dollars in millions)
Cash and cash equivalents		$	509	$	352
Restricted cash included in:
	Other current assets		1		–
Cash, cash equivalents and restricted cash in the statement of cash flows		$	510	$	352

New Accounting Pronouncements and Changes in Accounting Principles

In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers and has since amended the standard with Accounting Standards Update 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, Accounting Standards Update 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net), Accounting Standards Update 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing, Accounting Standards Update 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients, and Accounting Standards Update 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, collectively referred to hereinafter as ASU 2014-09.  These standards replace existing revenue recognition rules with a single comprehensive model to use in accounting for revenue arising from contracts with customers.  In February 2017, the FASB issued Accounting Standards Update 2017-05, Other Income – Gains and Losses from the Derecognition of Nonfinancial Assets:  Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (ASU 2017-05).  ASU 2017-05 clarifies how entities account for the derecognition of a nonfinancial asset and adds guidance for partial sales of nonfinancial assets.  U.S. Cellular adopted the provisions of ASU 2014-09 and ASU 2017-05 and applied them to all contracts as of January 1, 2018, using a modified retrospective method.  Under this method, the new accounting standard is applied only to the most recent period presented, recognizing the cumulative effect of the accounting change as an adjustment to the beginning balance of retained earnings.  Accordingly, prior periods have not been recast to reflect the new accounting standard.  The cumulative effect of applying the provisions of ASU 2014-09 resulted in an increase of $175 million in retained earnings as of January 1, 2018.  ASU 2017-05 had no impact to retained earnings as of January 1, 2018.

Recently Issued Accounting Pronouncements Not Yet Adopted

Recently Issued Accounting Pronouncements Not Yet Adopted

In February 2016, the FASB issued Accounting Standards Update 2016-02, Leases (ASU 2016-02).  ASU 2016-02 requires lessees to record a right-of-use asset and lease liability for almost all leases.  This ASU does not substantially impact the lessor accounting model.  However, some changes to the lessor accounting guidance were made to align with lessee accounting changes within Accounting Standards Codification (ASC) 842, Leases and certain key aspects of ASC 606, Revenue from Contracts with Customers.  Early adoption is permitted; however, U.S. Cellular plans to adopt ASU 2016-02 on a modified retrospective basis when required on January 1, 2019.  In January 2018, the FASB issued Accounting Standards Update 2018-01, Leases (ASU 2018-01), which permits an entity to elect an optional transition practical expedient to not evaluate land easements that exist or expired before the entities adoption of ASU 2016-02.  U.S. Cellular plans to adopt ASU 2018-01 in conjunction with its adoption of ASU 2016-02.  U.S. Cellular is evaluating the full effect that adoption of ASU 2016-02 and ASU 2018-01 will have on its financial condition, results of operations and disclosures.  Upon adoption, U.S. Cellular expects a substantial increase to assets and liabilities on its balance sheet and is in the process of implementing a new lease management and accounting system to assist in the application of the new standard.

In June 2016, the FASB issued Accounting Standards Update 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments (ASU 2016-13).  ASU 2016-13 requires entities to use a new forward-looking, expected loss model to estimate credit losses.  It also requires additional disclosure relating to the credit quality of trade and other receivables, including information relating to management’s estimate of credit allowances.  U.S. Cellular is required to adopt ASU 2016-13 on January 1, 2020, using the modified retrospective approach.  Early adoption is permitted as of January 1, 2019.  U.S. Cellular is evaluating the effects that adoption of ASU 2016-13 will have on its financial position, results of operations and disclosures.

Revenue Recognition

Nature of goods and services

The following is a description of principal activities from which U.S. Cellular generates its revenues.

Services and products	Nature, timing of satisfaction of performance obligations, and significant payment terms
Wireless services	Wireless service includes voice, messaging and data services.  Revenue is recognized in Service revenues as wireless service is provided to the customer.  Wireless services are generally billed and paid in advance on a monthly basis.
Wireless devices and accessories	U.S. Cellular offers a comprehensive range of wireless devices such as handsets, modems, mobile hotspots, home phones and tablets for use by its customers, as well as accessories.  U.S. Cellular also sells wireless devices to agents and other third-party distributors for resale.  U.S. Cellular frequently discounts wireless devices sold to new and current customers.  U.S. Cellular also offers customers the option to purchase certain devices under installment contracts over a specified time period.  For certain equipment installment plans, after a specified period of time, the customer may have the right to upgrade to a new device.  Such upgrades require the customer to enter into an equipment installment contract for the new device, and transfer the existing device to U.S. Cellular.  U.S. Cellular recognizes revenue in Equipment sales revenues when control of the device or accessory is transferred to the customer, which is generally upon delivery.
Wireless roaming	U.S. Cellular receives roaming revenues when other wireless carriers’ customers use U.S. Cellular’s wireless systems.  U.S. Cellular recognizes revenue in Service revenues when the roaming service is provided to the other carrier’s customer.
Wireless Eligible Telecommunications Carrier (ETC) Revenues	Telecommunications companies may be designated by states, or in some cases by the FCC, as an ETC to receive support payments from the Universal Service Fund if they provide specified services in “high cost” areas. ETC revenues recognized in the reporting period represent the amounts which U.S.Cellular is entitled to receive for such period, as determined and approved in connection with U.S.Cellular’s designation as an ETC in various states.
Wireless tower rents	U.S. Cellular receives tower rental revenues when another carrier leases tower space on a U.S. Cellular owned tower.  U.S. Cellular recognizes revenue in Service revenues in the period during which the services are provided.
Activation fees	U.S. Cellular charges its end customers activation fees in connection with the sale of certain services and equipment. These fees are deferred and recognized over the period benefitted.

Significant Judgments

U.S. Cellular sells bundled service and equipment offerings.  In these instances, U.S. Cellular recognizes its revenue based on the relative standalone selling prices for each distinct service or equipment performance obligation, or bundles thereof.  Revenues from sales of equipment are recognized when control has transferred to the customer.  Service revenues are recognized as the related service is provided.  Services are deemed to be highly interrelated when the method and timing of transfer and performance risk are the same.  Highly interrelated services that are determined to not be distinct have been grouped into a single performance obligation.  Each month of services promised is a performance obligation.  The series of monthly service performance obligations promised over the course of the contract are combined into a single performance obligation for purposes of the allocation. 

U.S. Cellular has made judgments regarding transaction price, including but not limited to issues relating to variable consideration, time value of money and returns.  When determined to be significant in the context of the contract, these items are considered in the valuation of transaction price at contract inception or modification, as appropriate. 

Revenue From Contract With Customer

U.S. Cellular adopted the provisions of ASU 2014-09 and ASU 2017-05 and applied them to all contracts as of January 1, 2018, using a modified retrospective method.  Under this method, the new accounting standard is applied only to the most recent period presented, recognizing the cumulative effect of the accounting change as an adjustment to the beginning balance of retained earnings.

As a practical expedient, U.S. Cellular groups similar contracts or similar performance obligations together into portfolios of contracts or performance obligations if doing so does not result in a significant difference from applying the new accounting standard to the individual contracts.  U.S. Cellular applies this grouping method for the following types of transactions: device activation fees, contract acquisition costs, and certain customer promotions.  Contract portfolios will be recognized over the respective expected customer lives or terms of the contracts.

Transaction price allocated to the remaining performance obligations

As a practical expedient, revenue related to contracts of less than one year, generally contracts with month-to-month customers, are excluded from these estimates. 

U.S. Cellular has certain contracts in which it bills customers an amount equal to a fixed per-unit price multiplied by a variable quantity.  Because U.S. Cellular invoices customers in an amount that corresponds directly with the value to the customer of the entity’s performance completed to date, U.S. Cellular may recognize revenue in that amount.  As a practical expedient, these contracts will be excluded from the estimate of future revenues expected to be recognized related to performance obligations that are unsatisfied as of the end of a reporting period.

Contract Cost Assets

As a practical expedient, costs with an amortization period of one year or less are not capitalized.

Variable Interest Entities

U.S. Cellular consolidates variable interest entities (VIEs) in which it has a controlling financial interestas defined by GAAP and is therefore deemed the primary beneficiary.  A controlling financial interest will have both of the following characteristics: (a) the power to direct the VIE activities that most significantly impact economic performance; and (b) the obligation to absorb the VIE losses and the right to receive benefits that are significant to the VIE.  U.S. Cellular reviews these criteria initially at the time it enters into agreements and subsequently when events warranting reconsideration occur.These VIEshave risks similar to those described in the “Risk Factors” in U.S. Cellular’s Form 10-K for the year ended December 31, 2017.

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Basis Of Presentation (Table)

3 Months Ended

Mar. 31, 2018

Basis of Presentation [Abstract]

Reconciliation of cash, cash equivalents and restricted cash

U.S. Cellular presents restricted cash with cash and cash equivalents in the Consolidated Statement of Cash Flows.  The following table provides a reconciliation of Cash and cash equivalents and restricted cash reported in the Consolidated Balance Sheet to the total of the amounts in the Consolidated Statement of Cash Flows as ofMarch 31, 2018 and December 31, 2017.

			March 31,		December 31,
			2018		2017
(Dollars in millions)
Cash and cash equivalents		$	509	$	352
Restricted cash included in:
	Other current assets		1		–
Cash, cash equivalents and restricted cash in the statement of cash flows		$	510	$	352

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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Schedule of new accounting pronouncements and changes in accounting principles

The line items impacted by the adoption of ASU 2014-09 and ASU 2017-05 on the Consolidated Statement of Operations and the Consolidated Balance Sheet are presented below.

Consolidated Statement of Operations

	Results under prior accounting standards
			Adjustment		As reported
Three Months Ended March 31, 2018
(Dollars and shares in millions, except per share amounts)
Operating revenues
Service	$	754	$	(30)	$	724
Equipment sales		198		20		218
Total operating revenues		952		(10)		942
Cost of equipment sold		222		(3)		219
(Gain) loss on license sales and exchanges, net		(6)		(1)		(7)
Total operating expenses		882		(5)		877
Operating income (loss)		70		(5)		65
Income (loss) before income taxes		82		(5)		77
Income tax expense (benefit)		24		(2)		22
Net income (loss)		58		(3)		55
Net income (loss) attributable to U.S. Cellular shareholders		48		(3)		45
Basic earnings (loss) per share attributable to
U.S. Cellular shareholders	$	0.56	$	(0.04)	$	0.52
Diluted earnings (loss) per share attributable to
U.S. Cellular shareholders	$	0.56	$	(0.04)	$	0.52

Consolidated Balance Sheet

	Results under prior accounting standards
			Adjustment		As reported
As of March 31, 2018
(Dollars in millions)
Accounts receivable
Customers and agents, less allowances	$	730	$	59	$	789
Roaming		26		(11)		15
Prepaid expenses		87		(21)		66
Other current assets		19		13		32
Total current assets		1,550		41		1,591
Licenses		2,230		1		2,231
Investments in unconsolidated entities		436		14		450
Other assets and deferred charges		383		154		537
Total assets		6,838		210		7,048
Customer deposits and deferred revenues		158		(26)		132
Accrued taxes		59		(1)		58
Other current liabilities		86		4		90
Total current liabilities		638		(22)		616
Deferred income tax liability, net		477		49		526
Other deferred liabilities and credits		349		10		359
Retained earnings		2,203		172		2,375
Total U.S. Cellular shareholders' equity		3,735		172		3,907
Noncontrolling interests		10		1		11
Total equity		3,745		173		3,918
Total liabilities and equity		6,838		210		7,048

Disaggregation of revenue

In the following table, revenue is disaggregated by type of service and timing of revenue recognition.  Service revenues are recognized over time and Equipment sales are point in time.  

		Three Months Ended
		March 31, 2018
(Dollars in millions)
Revenues from contracts with customers:
Retail service		$	649
Inbound roaming			27
Other service			32
Service revenues from contracts with customers			708
Equipment sales			218
Total revenues from contracts with customers 1		$	926
1	These amounts do not include revenues outside the scope of ASU 2014-09; therefore, revenue line items in this table will not agree to amounts presented in the Consolidated Statement of Operations.

Contract with customer, Assets and Liabilities

The accounts receivable balance related to amounts billed and not paid on contracts with customers, net of allowances, is shown in the table below.  Bad debts expense recognized for the three months ended March 31, 2018, related to receivables was $19 million.

		Three Months Ended
		March 31, 2018
(Dollars in millions)
Accounts receivable
Customer and agents		$	789
Roaming			15
Other			27
Total 1		$	831
1	These amounts do not include accounts receivable related to revenues outside the scope of ASU 2014-09; therefore, accounts receivable line items presented in this table will not agree to amounts presented in the Consolidated Balance Sheet.

The following table provides a rollforward of contract assets from contracts with customers, which are recorded in Other current assets and Other assets and deferred charges in the Consolidated Balance Sheet.

	Contract Assets
(Dollars in millions)
Balance at December 31, 2017	$	–
Change in accounting policy		26
Contract additions		8
Terminated contracts		(1)
Bad debts expense		–
Revenue recognized		(8)
Balance at March 31, 2018	$	25

The following table provides a rollforward of contract liabilities from contracts with customers, which are recorded in Customer deposits and deferred revenues and Other deferred liabilities and credits in the Consolidated Balance Sheet.

		Contract Liabilities
(Dollars in millions)
Balance at December 31, 2017		$	–
Change in accounting policy - Deferred revenues reclassification 1			167
Change in accounting policy - Retained earnings impact			(21)
Contract additions			24
Terminated contracts			–
Revenue recognized			(43)
Balance at March 31, 2018		$	127
1	This amount represents U.S. Cellular's obligation to transfer goods or services to customers for which it had received payment and classified as deferred revenue at December 31, 2017.

Remaining performance obligation

The following table includes estimated service revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period. These estimates are based on contracts in place as of March 31, 2018, and may vary from actual results due to future contract modifications.  As a practical expedient, revenue related to contracts of less than one year, generally contracts with month-to-month customers, are excluded from these estimates. 

		Service Revenue
(Dollars in millions)
Remainder of 2018		$	244
2019			86
Thereafter			3
	Total	$	333

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Fair Value Measurements (Table)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair value measurements

U.S. Cellular has applied the provisions of fair value accounting for purposes of computing the fair value of financial instruments for disclosure purposes as displayed below.

		Level within the Fair Value Hierarchy	March 31, 2018				December 31, 2017
			Book Value		Fair Value		Book Value		Fair Value
(Dollars in millions)
Cash and cash equivalents		1	$	509	$	509	$	352	$	352
Short-term investments		1		–		–		50		50
Long-term debt
	Retail	2		917		944		917		939
	Institutional	2		534		555		534		522
	Other	2		188		188		191		191

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Equipment Installment Plans (Table)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Equipment installment plans

The following table summarizes equipment installment plan receivables as of March 31, 2018 and December 31, 2017.

	March 31, 2018		December 31, 2017
(Dollars in millions)
Equipment installment plan receivables, gross	$	871	$	873
Deferred interest		–		(80)
Equipment installment plan receivables, net of deferred interest		871		793
Allowance for credit losses		(66)		(65)
Equipment installment plan receivables, net	$	805	$	728
Net balance presented in the Consolidated Balance Sheet as:
Accounts receivable — Customers and agents (Current portion)	$	496	$	428
Other assets and deferred charges (Non-current portion)		309		300
Equipment installment plan receivables, net	$	805	$	728

Equipment installment plan receivables credit categories

The balance and aging of the equipment installment plan receivables on a gross basis by credit category were as follows:

	March 31, 2018						December 31, 2017
	Lower Risk		Higher Risk		Total		Lower Risk		Higher Risk		Total
(Dollars in millions)
Unbilled	$	809	$	19	$	828	$	807	$	20	$	827
Billed — current		28		1		29		31		1		32
Billed — past due		12		2		14		12		2		14
Equipment installment plan receivables, gross	$	849	$	22	$	871	$	850	$	23	$	873

Equipment installment plans allowance for credit losses

Activity for the three months ended March 31, 2018 and 2017, in the allowance for credit losses balance for the equipment installment plan receivables was as follows:

	March 31, 2018		March 31, 2017
(Dollars in millions)
Allowance for credit losses, beginning of period	$	65	$	50
Bad debts expense		14		15
Write-offs, net of recoveries		(13)		(12)
Allowance for credit losses, end of period	$	66	$	53

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings per share

The amounts used in computing earnings per common share and the effects of potentially dilutive securities on the weighted average number of common shares were as follows:

	Three Months Ended
	March 31,
	2018		2017
(Dollars and shares in millions, except per share amounts)
Net income attributable to U.S. Cellular shareholders	$	45	$	26
Weighted average number of shares used in basic   earnings per share		85		85
Effects of dilutive securities		1		1
Weighted average number of shares used in diluted   earnings per share		86		86
Basic earnings per share attributable to U.S. Cellular   shareholders	$	0.52	$	0.31
Diluted earnings per share attributable to   U.S. Cellular shareholders	$	0.52	$	0.31

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Licenses

Licenses

Activity related to Licenses for the three months endedMarch 31, 2018, is presented below:

Licenses
(Dollars in millions)
Balance at December 31, 2017		$	2,223
	Acquisitions		1
	Transferred to Assets held for sale		(10)
	Exchanges - Licenses received		18
	Exchanges - Licenses surrendered		(1)
Balance at March 31, 2018		$	2,231

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Investment in Unconsolidated Entities (Tables)

3 Months Ended

Mar. 31, 2018

Investments in Unconsolidated Entities [Abstract]

Equity and measurement alternative method investments

U.S. Cellular’s Investments in unconsolidated entities are accounted for using either the equity method or measurement alternative method as shown in the table below.  The measurement alternative method was elected for investments without readily determinable fair values formerly accounted for under the cost method.  The measurement alternative fair value represents cost minus any impairments plus or minus any observable price changes.  U.S. Cellular did not have an impairment or observable price change related to these investments for the three months ended March 31, 2018.

	March 31,		December 31,
	2018		2017
(Dollars in millions)
Equity method investments	$	444	$	411
Measurement alternative method investments		6		4
Total investments in unconsolidated entities	$	450	$	415

Equity method investments, summarized results of operations

The following table, which is based in part on information provided by third parties, summarizes the combined results of operations of U.S. Cellular’s equity method investments.

	Three Months Ended March 31,
	2018		2017
(Dollars in millions)
Revenues	$	1,657	$	1,610
Operating expenses		1,208		1,212
Operating income		449		398
Other expense, net		(1)		–
Net income	$	448	$	398

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Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2018

Variable Interest Entities [Abstract]

Consolidated VIE assets and liabilities

The following table presents the classification and balances of the consolidated VIEs’ assets and liabilities in U.S. Cellular’s Consolidated Balance Sheet.

			March 31,		December 31,
			2018		2017
(Dollars in millions)
Assets
	Cash and cash equivalents		$	1	$	3
	Accounts receivable			543		476
	Other current assets			8		8
	Licenses			654		655
	Property, plant and equipment, net			96		99
	Other assets and deferred charges			321		303
		Total assets	$	1,623	$	1,544
Liabilities
	Current liabilities		$	32	$	39
	Deferred liabilities and credits			14		13
		Total liabilities	$	46	$	52

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Basis Of Presentation, Restricted Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Basis of Presentation [Abstract]
Cash and cash equivalents	$ 509	$ 352
Other current assets	1
Cash, cash equivalents and restricted cash in the statement of cash flows	$ 510	$ 352	$ 572	$ 586

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Basis of Presentation, Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basis of Presentation [Line Items]
Amounts recorded gross in revenues that are billed to customers and remitted to governmental authorities	$ 17	$ 14
TDS
Basis of Presentation [Line Items]
TDS ownership of U.S. Cellular	83.00%

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Revenue Recognition, Consolidated Statement Of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating revenues
Service	$ 724	$ 746
Equipment sales	218	190
Total operating revenues	942	936
Cost of equipment sold	219	228
(Gain) loss on license sales and exchanges, net	(7)	(17)
Total operating expenses	877	882
Operating income (loss)	65	54
Income (loss) before income taxes	77	61
Income tax expense (benefit)	22	33
Net income (loss)	55	28
Net income (loss) attributable to U.S. Cellular shareholders	$ 45	$ 26
Basic earnings (loss) per share attributable to U.S. Cellular shareholders	$ 0.52	$ 0.31
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders	$ 0.52	$ 0.31
Results under prior accounting standards
Operating revenues
Service	$ 754
Equipment sales	198
Total operating revenues	952
Cost of equipment sold	222
(Gain) loss on license sales and exchanges, net	(6)
Total operating expenses	882
Operating income (loss)	70
Income (loss) before income taxes	82
Income tax expense (benefit)	24
Net income (loss)	58
Net income (loss) attributable to U.S. Cellular shareholders	$ 48
Basic earnings (loss) per share attributable to U.S. Cellular shareholders	$ 0.56
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders	$ 0.56
Adjustment
Operating revenues
Service	$ (30)
Equipment sales	20
Total operating revenues	(10)
Cost of equipment sold	(3)
(Gain) loss on license sales and exchanges, net	(1)
Total operating expenses	(5)
Operating income (loss)	(5)
Income (loss) before income taxes	(5)
Income tax expense (benefit)	(2)
Net income (loss)	(3)
Net income (loss) attributable to U.S. Cellular shareholders	$ (3)
Basic earnings (loss) per share attributable to U.S. Cellular shareholders	$ (0.04)
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders	$ (0.04)

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Revenue Recognition, Consolidated Balance Sheet (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts receivable
Customers and agents, less allowances		$ 789	$ 775
Roaming		15	26
Prepaid expenses		66	79
Other current assets		32	21
Total current assets		1,591	1,483
Licenses		2,231	2,223
Investments in unconsolidated entities		450	415
Other assets and deferred charges		537	390
Total assets	[1]	7,048	6,841
Customer deposits and deferred revenues		132	185
Accrued taxes		58	56
Other current liabilities		90	90
Total current liabilities		616	733
Deferred income tax liability, net		526	461
Other deferred liabilities and credits		359	337
Retained earnings		2,375	2,157
Total U.S. Cellular shareholders' equity		3,907	3,677
Noncontrolling interests		11	10
Total equity		3,918	3,687	$ 3,682	$ 3,645
Total liabilities and equity	[1]	7,048	$ 6,841
Results under prior accounting standards
Accounts receivable
Customers and agents, less allowances		730
Roaming		26
Prepaid expenses		87
Other current assets		19
Total current assets		1,550
Licenses		2,230
Investments in unconsolidated entities		436
Other assets and deferred charges		383
Total assets		6,838
Customer deposits and deferred revenues		158
Accrued taxes		59
Other current liabilities		86
Total current liabilities		638
Deferred income tax liability, net		477
Other deferred liabilities and credits		349
Retained earnings		2,203
Total U.S. Cellular shareholders' equity		3,735
Noncontrolling interests		10
Total equity		3,745
Total liabilities and equity		6,838
Adjustment
Accounts receivable
Customers and agents, less allowances		59
Roaming		(11)
Prepaid expenses		(21)
Other current assets		13
Total current assets		41
Licenses		1
Investments in unconsolidated entities		14
Other assets and deferred charges		154
Total assets		210
Customer deposits and deferred revenues		(26)
Accrued taxes		(1)
Other current liabilities		4
Total current liabilities		(22)
Deferred income tax liability, net		49
Other deferred liabilities and credits		10
Retained earnings		172
Total U.S. Cellular shareholders' equity		172
Noncontrolling interests		1
Total equity		173
Total liabilities and equity		$ 210

[1] The consolidated total assets as of March 31, 2018 and December 31, 2017, include assets held by consolidated variable interest entities (VIEs) of $793 million and $785 million, respectively, which are not available to be used to settle the obligations of U.S. Cellular. The consolidated total liabilities as of March 31, 2018 and December 31, 2017, include certain liabilities of consolidated VIEs of $21 million and $24 million, respectively, for which the creditors of the VIEs have no recourse to the general credit of U.S. Cellular. See Note 9 — Variable Interest Entities for additional information.

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Revenue Recognition, Disaggregation Of Revenue (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Revenue from contracts with customers
Revenue from contracts with customers	$ 926	[1]
Transferred over time
Revenue from contracts with customers
Revenue from contracts with customers	708
Transferred over time | Retail service
Revenue from contracts with customers
Revenue from contracts with customers	649
Transferred over time | Inbound roaming
Revenue from contracts with customers
Revenue from contracts with customers	27
Transferred over time | Other service
Revenue from contracts with customers
Revenue from contracts with customers	32
Transferred at point in time
Revenue from contracts with customers
Revenue from contracts with customers	$ 218

[1] These amounts do not include revenues outside the scope of ASU 2014-09; therefore, revenue line items in this table will not agree to amounts presented in the Consolidated Statement of Operations.

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Revenue Recognition, Accounts Receivable (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Accounts receivable
Customer and agents		$ 789	$ 775
Roaming		15	26
Other		35	$ 41
Accounts receivable from contract with customer
Accounts receivable
Customer and agents		789
Roaming		15
Other		27
Total	[1]	$ 831

[1] These amounts do not include accounts receivable related to revenues outside the scope of ASU 2014-09; therefore, accounts receivable line items presented in this table will not agree to amounts presented in the Consolidated Balance Sheet.

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Revenue Recognition, Contract Asset (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Contract Assets
Change in accounting policy	$ 176
Contract assets
Contract Assets
Balance, beginning of period	0
Change in accounting policy	26
Contract additions	8
Terminated contracts	(1)
Revenue recognized	(8)
Balance, end of period	$ 25

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Revenue Recognition, Contract Liabilities (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Contract Liabilities
Balance, beginning of period	$ 0
Change in accounting policy - Deferred revenues reclassification	167	[1]
Change in accounting policy - Retained earnings impact	(21)
Contract additions	24
Revenue recognized	(43)
Balance, end of period	$ 127

[1] This amount represents U.S. Cellular's obligation to transfer goods or services to customers for which it had received payment and classified as deferred revenue at December 31, 2017.

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Revenue Recognition, Performance Obligations (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 333
Revenue recognition, remaining performance obligation, optional practical expedient	true
Remainder of 2018
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 244
2019
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	86
Thereafter
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 3

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Revenue Recognition, Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue recognition [Line Items]
Cumulative effect of accounting change	$ 176
Bad debts expense	$ 19	$ 24
Revenue recognition, practical expedient	false
Capitalized contract cost
Capitalized contract cost related to commission fees	$ 133
Amortization of contract cost assets	27
Impairment of capitalized contract cost	$ 0
Contract cost practical expedient	true
Retained Earnings [Member]
Revenue recognition [Line Items]
Cumulative effect of accounting change	$ 175
Revenue from contract with customer
Revenue recognition [Line Items]
Bad debts expense	19
Revenue recognition | Retained Earnings [Member]
Revenue recognition [Line Items]
Cumulative effect of accounting change	$ 175

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Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Financial Instruments
Cash and cash equivalents	$ 509	$ 352
Short-term investments	$ 0	$ 50
Institutional and Other | Minimum
Financial Instruments
Fair value assumption, interest rate	4.58%	4.74%
Institutional and Other | Maximum
Financial Instruments
Fair value assumption, interest rate	6.34%	7.13%
Fair Value | Level 1
Financial Instruments
Cash and cash equivalents	$ 509	$ 352
Short-term investments	0	50
Fair Value | Level 2 | Retail
Financial Instruments
Long-term debt	944	939
Fair Value | Level 2 | Institutional
Financial Instruments
Long-term debt	555	522
Fair Value | Level 2 | Other
Financial Instruments
Long-term debt	188	191
Book Value
Financial Instruments
Cash and cash equivalents	509	352
Short-term investments	0	50
Book Value | Retail
Financial Instruments
Long-term debt	917	917
Book Value | Institutional
Financial Instruments
Long-term debt	534	534
Book Value | Other
Financial Instruments
Long-term debt	$ 188	$ 191

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Equipment Installment Plan Receivables, EIP Receivables (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Equipment installment plans [Line Items]
Equipment installment plan receivables, gross	$ 871	$ 873
Deferred interest	0	(80)
Equipment installment plan receivables, net of deferred interest	871	793
Allowance for credit losses	(66)	(65)
Equipment installment plan receivables, net	805	728
Accounts receivable - Customers and agents
Equipment installment plans [Line Items]
Equipment installment plan receivables, net	496	428
Other assets and deferred charges
Equipment installment plans [Line Items]
Equipment installment plan receivables, net	$ 309	$ 300

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Equipment Installment Plan Receivables, Gross Receivables by Credit Category (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	$ 871	$ 873
Unbilled
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	828	827
Billed
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	29	32
Equipment installment plan receivables, past due	14	14
Lower Risk
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	849	850
Lower Risk | Unbilled
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	809	807
Lower Risk | Billed
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	28	31
Equipment installment plan receivables, past due	12	12
Higher Risk
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	22	23
Higher Risk | Unbilled
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	19	20
Higher Risk | Billed
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	1	1
Equipment installment plan receivables, past due	$ 2	$ 2

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Equipment Installment Plan Receivables, Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for credit losses
Allowance for credit losses, beginning of period	$ 65
Allowance for credit losses, end of period	66
Equipment Installment Plan Receivable
Allowance for credit losses
Allowance for credit losses, beginning of period	65	$ 50
Bad debts expense	14	15
Write-offs, net of recoveries	(13)	(12)
Allowance for credit losses, end of period	$ 66	$ 53

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Equipment Installment Plan Receivables, Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Equipment installment plans [Line Items]
Guarantee liability	$ 13	$ 15

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Income Taxes, Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Income Tax Disclosure [Abstract]
Income tax benefit, adjustment	$ 3

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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings per share
Net income attributable to U.S. Cellular shareholders	$ 45	$ 26
Weighted average number of shares used in basic earnings per share	85	85
Effects of dilutive securities	1	1
Weighted average number of shares used in diluted earnings per share	86	86
Basic earnings per share attributable to U.S. Cellular shareholders	$ 0.52	$ 0.31
Diluted earnings per share attributable to U.S. Cellular shareholders	$ 0.52	$ 0.31

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Earnings Per Share, Narrative (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings per share, Other disclosures
Antidilutive securities	2	2

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Intangible Assets (Details) - Licenses $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Licenses
Balance, beginning of period	$ 2,223
Acquisitions	1
Transferred to Assets held for sale	(10)
Exchanges - Licenses received	18
Exchanges - Licenses surrendered	(1)
Balance, end of period	$ 2,231

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Investments in Unconsolidated Entities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Equity and measurement alternative method investments
Equity method investments	$ 444		$ 411
Measurement alternative method investments	6		4
Total investments in unconsolidated entities	450		$ 415
Equity method investments, combined income statements
Revenues	1,657	$ 1,610
Operating expenses	1,208	1,212
Operating income	449	398
Other expense, net	(1)
Net income	$ 448	$ 398

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Investments in Unconsolidated Entities, Narrative (Details) $ in Millions	Mar. 31, 2018 USD ($)
Equity Securities without Readily Determinable Fair Value [Line Items]
Measurement alternative, impairment	$ 0
Measurement alternative, observable price change	$ 0

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Variable Interest Entities, Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 509	$ 352
Accounts receivable	789	775
Other current assets	32	21
Licenses	2,231	2,223
Property, plant and equipment, net	2,233	2,320
Other assets and deferred charges	537	390
Liabilities
Current liabilities	616	733
Consolidated Variable Interest Entities
Assets
Cash and cash equivalents	1	3
Accounts receivable	543	476
Other current assets	8	8
Licenses	654	655
Property, plant and equipment, net	96	99
Other assets and deferred charges	321	303
Total assets	1,623	1,544
Liabilities
Current liabilities	32	39
Deferred liabilities and credits	14	13
Total liabilities	$ 46	$ 52

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Variable Interest Entities, Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Variable Interest Entities, Other Disclosures
Capital contributions, loans or advances	$ 19	$ 654
Investments in unconsolidated entities, maximum exposure	$ 5		$ 4
Out-of-period adjustment description	During the three months ended March 31, 2018, U.S. Cellular recorded out-of-period adjustments attributable to 2016 and 2017 due to errors in the application of accounting guidance applicable to the calculation of Noncontrolling interests with redemption features related to King Street Wireless, Inc.  These out-of-period adjustments had the impact of increasing Net income attributable to noncontrolling interests, net of tax, by $8 million and decreasing Net income attributable to U.S. Cellular shareholders by $8 million for the three months ended March 31, 2018. U.S. Cellular determined that these adjustments were not material to any of the periods impacted.
Net income attributable to noncontrolling interests, net of tax
Variable Interest Entities, Other Disclosures
Out-of-period adjustment	$ 8
Net income attributable to U.S. Cellular shareholders
Variable Interest Entities, Other Disclosures
Out-of-period adjustment	(8)
USCC EIP LLC
Variable Interest Entities, Other Disclosures
Capital contributions, loans or advances	$ 10	$ 650