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Supplemental Cash Flow Disclosures | 12 Months Ended
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Dec. 31, 2016
Supplemental Cash Flow Information [Abstract] |
Supplemental Cash Flow Disclosures | Note 17 Supplemental Cash Flow Disclosures Following are supplemental cash flow disclosures regarding interest paid and income taxes paid.
Year Ended December 31, | 2016 |  | 2015 |  | 2014
(Dollars in millions) |  |  |  |  |  |  |  |
Interest paid | $ | 113 |  | $ | 81 |  | $ | 55
Income taxes paid, net of refunds received |  | (11) |  |  | 59 |  |  | 33
Following are supplemental cash flow disclosures regarding transactions related to stock-based compensation awards. In certain situations, U.S. Cellular withholds shares that are issuable upon the exercise of stock options or the vesting of restricted shares to cover, and with a value equivalent to, the exercise price and/or the amount of taxes required to be withheld from the stock award holder at the time of the exercise or vesting. U.S. Cellular then pays the amount of the required tax withholdings to the taxing authorities in cash.
Year Ended December 31, | 2016 |  | 2015 |  | 2014
(Dollars in millions) |  |  |  |  |  |  |  |
Common Shares withheld |  | 308,010 |  |  | 228,011 |  |  | 163,355
Aggregate value of Common Shares withheld | $ | 13 |  | $ | 8 |  | $ | 7
Cash receipts upon exercise of stock options |  | 12 |  |  | 7 |  |  | 5
Cash disbursements for payment of taxes |  | (6) |  |  | (5) |  |  | (4)
Net cash receipts from exercise of stock |  |  |  |  |  |  |  |
options and vesting of other stock awards | $ | 6 |  | $ | 2 |  | $ | 1
On September 27, 2012, the FCC conducted a single round, sealed bid, reverse auction to award up to $300 million in one-time Mobility Fund Phase I support to successful bidders that commit to provide 3G, or better, wireless service in areas designated as unserved by the FCC. This auction was designated by the FCC as Auction 901. U.S. Cellular and several of its wholly-owned subsidiaries participated in Auction 901 and were winning bidders in eligible areas within 10 states and will receive up to $40 million in one-time support from the Mobility Fund. These funds when received reduce the carrying amount of the assets to which they relate or offset operating expenses. In connection with these winning bids, in June 2013, U.S. Cellular provided $17 million letters of credit to the FCC, of which $2 million remained outstanding as of December 31, 2016. U.S. Cellular has received $35 million in support funds, of which the entire balance has been spent as of December 31, 2016. U.S. Cellular has set up a receivable in the amount of $2 million as of December 31, 2016 pending final review from the FCC to release funds.

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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