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Stock Based Compensation Nonvested Shares and Other (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
2005 Long-Term Incentive Plan | Deferred Compensation Stock Units |  |  |
Long-Term Incentive Plan, deferred compensation description |  |  |
Deferred compensation arrangement description | Certain U.S. Cellular employees may elect to defer receipt of all or a portion of their annual bonuses and to receive a company matching contribution on the amount deferred. All bonus compensation that is deferred by employees electing to participate is immediately vested and is deemed to be invested in U.S. Cellular Common Share stock units. The amount of U.S. Cellular’s matching contribution depends on the portion of the annual bonus that is deferred. Participants receive a 25% match for amounts deferred up to 50% of their total annual bonus and a 33% match for amounts that exceed 50% of their total annual bonus; such matching contributions also are deemed to be invested in U.S. Cellular Common Share stock units. |  |
Common Shares | 2005 Long-Term Incentive Plan | Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested stock units, begin of period - Number of shares | 752,000 |  |
Granted number of shares | 346,000 |  |
Vested number of shares | (189,000) |  |
Forfeited number of shares | (64,000) |  |
Nonvested stock units, end of period - Number of shares | 845,000 | 752,000 |
Stock based compensation, Nonvested shares weighted average grant date fair value |  |  |
Nonvested stock units - begin of period weighted average grant date fair value | $ 42.69 |  |
Granted weighted average grant date fair value | $ 49.35 | $ 42.21 | $ 33
Vested weighted average grant date fair value | $ 55.93 |  |
Forfeited weighted average grant date fair value | $ 42.48 |  |
Nonvested stock units - end of period weighted average grant date fair value | $ 42.48 | $ 42.69 |
Fair value of vested stock units | $ 9.5 | $ 4.7 | $ 4.2
Common Shares | 2005 Long-Term Incentive Plan | Deferred Compensation Stock Units |  |  |
Stock based compensation, Nonvested shares weighted average grant date fair value |  |  |
Granted weighted average grant date fair value | $ 48.72 | $ 40.76 | $ 33.58
Fair value of vested stock units | $ 0.1 | $ 0.4 | $ 0.1
Common Shares | Non-Employee Directors' Plan |  |  |
Shares issued and granted under stock compensation plans |  |  |
Shares issued | 6,600 | 9,000 | 5,200

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- Definition General description of deferred compensation arrangements. Deferred compensation represents currently earned compensation that, under the terms of a profit-sharing, rabbi trust, pension, employee contract, or equity-based (including stock or unit option) plan, is not actually paid until a later date and is therefore not taxable until that date. May also include some split-dollar life insurance arrangements. This type of arrangement is usually made to help employees postpone paying taxes on the income and also to retain employees longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Endorsement Split-Dollar Life Insurance -URI http://asc.fasb.org/extlink&oid=6511593 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 718 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Rabbi Trusts -URI http://asc.fasb.org/extlink&oid=6522716 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(e) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(a) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(b) -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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