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Earnings Per Share | 9 Months Ended
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Sep. 30, 2011
Disclosure Text Block [Abstract] |
Earnings Per Share | 5. Earnings 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 exercise of outstanding stock options and the vesting of restricted stock units. The amounts used in computing Earnings per Common and Series A Common Share and the effects of potentially dilutive securities on the weighted average number of Common and Series A Common Shares are as follows:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2011 |  | 2010 |  | 2011 |  | 2010
(Dollars and shares in thousands, except per share amounts) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to U.S. Cellular shareholders | $ | 62,140 |  |  | $ | 38,296 |  |  | $ | 172,240 |  |  | $ | 128,292 |
Weighted average number of shares used in basic earnings per share |  | 84,547 |  |  |  | 85,992 |  |  |  | 84,984 |  |  |  | 86,329 |
Effects of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Stock options |  | 86 |  |  |  | 104 |  |  |  | 124 |  |  |  | 80 |
| Restricted stock units |  | 307 |  |  |  | 332 |  |  |  | 340 |  |  |  | 297 |
Weighted average number of shares used in diluted earnings per share |  | 84,940 |  |  |  | 86,428 |  |  |  | 85,448 |  |  |  | 86,706 |
Basic earnings per share attributable to U.S. Cellular shareholders | $ | 0.73 |  |  | $ | 0.45 |  |  | $ | 2.03 |  |  | $ | 1.49 |
Diluted earnings per share attributable to U.S. Cellular shareholders | $ | 0.73 |  |  | $ | 0.44 |  |  | $ | 2.02 |  |  | $ | 1.48 |
Certain Common Shares issuable upon the exercise of stock options or vesting of restricted stock units were not included in average diluted shares outstanding for the calculation of Diluted earnings per share because their effects were antidilutive. The number of such Common Shares excluded is shown in the table below.
| Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2011 |  | 2010 |  | 2011 |  | 2010
(Shares in thousands) |  |  |  |  |  |  |
Stock options | 1,605 |  | 1,836 |  | 1,357 |  | 1,768
Restricted stock units | 1 |  | — |  | 193 |  | 195

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=6945512&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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