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Debt | 6 Months Ended
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Jun. 30, 2018
Debt Disclosure [Abstract] |
Debt | Note 9 Debt Revolving Credit Agreements In May 2018, TDS entered into a new $400 million revolving credit agreement with certain lenders and other parties and U.S. Cellular entered into a new $300 million revolving credit agreement with certain lenders and other parties. Amounts under both of the new revolving credit agreements are available for general corporate purposes, including acquisitions, spectrum purchases and capital expenditures, and may be borrowed, repaid and reborrowed from time to time until maturity in May 2023. As a result of the new agreements, TDS’ and U.S. Cellular’s previous revolving credit agreements due to expire in June 2021 were terminated. The following table summarizes the terms of the revolving credit agreements as of June 30, 2018:
| TDS |  | U.S. Cellular |
(Dollars in millions) |  |  |  |  |  |
Maximum borrowing capacity | $ | 400 |  | $ | 300 |
Letters of credit outstanding | $ | 1 |  | $ | 2 |
Amount borrowed | $ | – |  | $ | – |
Amount available for use | $ | 399 |  | $ | 298 |
Except for the change in the maturity date, the terms of the new revolving credit agreements are substantially the same as the previous revolving credit agreements. Term Loan In May 2018, U.S. Cellular also amended its senior term loan credit agreement in order to align with the new revolving credit agreement. There were no significant changes to the maturity date or other key terms of the agreement.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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