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DISCONTINUED OPERATIONS - SALE OF U.S. RETAIL WIRELESS BUSINESS (Details) (USD $) | 3 Months Ended | 6 Months Ended |  |  | 0 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 1 Months Ended
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Jun. 30, 2013 | Jun. 30, 2013 | Jun. 30, 2014 | Dec. 31, 2013 | Sep. 20, 2013 Alltel Sale AT&T Mobility | Mar. 31, 2014 Alltel Sale AT&T Mobility | Jun. 30, 2013 Alltel Sale AT&T Mobility | Jun. 30, 2014 Alltel Sale AT&T Mobility | Jun. 30, 2013 Alltel Sale AT&T Mobility | Mar. 31, 2015 Alltel Sale AT&T Mobility Subsequent event | Sep. 30, 2014 Alltel Sale AT&T Mobility Subsequent event
SALE OF U.S. RETAIL WIRELESS BUSINESS |  |  |  |  |  |  |  |  |  |  |
Cash proceeds |  |  |  |  | $ 780,000,000 |  |  |  |  |  |
Working capital adjustments |  |  |  |  | 16,800,000 |  |  |  |  |  |
Total cash proceeds including working capital adjustments |  |  |  |  | 796,800,000 |  |  |  |  |  |
Cash held in escrow |  |  |  |  | 78,000,000 |  |  |  |  |  |
First release of escrowed cash |  |  |  |  |  | 19,500,000 |  |  |  |  |
Restricted cash |  |  | 58,794,000 | 39,000,000 |  |  |  | 58,500,000 |  |  |
Second release of escrowed cash |  |  |  |  |  |  |  |  |  |  | 19,500,000
Third release of escrowed cash |  |  |  |  |  |  |  |  |  | 39,000,000 |
Minority shareholders' interests in sold operations |  |  |  |  |  |  |  | 7,300,000 |  |  |
Revenues and income from discontinued operations |  |  |  |  |  |  |  |  |  |  |
Revenue from discontinued operations |  |  |  |  |  |  | 103,446,000 |  | 211,483,000 |  |
Income from discontinued operations, net of tax expense | 3,091,000 | 7,125,000 |  |  |  |  | 3,091,000 |  | 7,125,000 |  |
Income from discontinued operations, tax expense |  |  |  |  |  |  | $ 1,800,000 |  | $ 4,300,000 |  |

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- Definition After tax income (loss) from operations of a business component (exclusive of any gain (loss) on disposal, or provision therefore) during the reporting period, until its disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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