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DISCONTINUED OPERATIONS - SALE OF U.S. RETAIL WIRELESS BUSINESS (Details) (USD $) | 3 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 0 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Sep. 20, 2013 Alltel Sale AT&T Mobility LLC | Dec. 31, 2013 Alltel Sale AT&T Mobility LLC | Sep. 30, 2013 Alltel Sale AT&T Mobility LLC | Dec. 31, 2013 Alltel Sale AT&T Mobility LLC | Dec. 31, 2012 Alltel Sale AT&T Mobility LLC | Dec. 31, 2011 Alltel Sale AT&T Mobility LLC | Sep. 20, 2013 Alltel Sale AT&T Mobility LLC Trade names Alltel
SALE OF U.S. RETAIL WIRELESS BUSINESS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration for sale of operations in all-cash transaction |  |  |  |  |  |  |  |  |  |  |  | $ 780,000,000 |  |  |  |  |  |
Proceeds: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Received |  |  |  |  |  |  |  |  |  |  |  | 702,000,000 |  |  |  |  |  |
Escrowed |  |  |  |  |  |  |  |  |  |  |  | 78,000,000 |  |  |  |  |  |
Working capital |  |  |  |  |  |  |  |  |  |  |  | 16,828,000 |  |  |  |  |  |
Adjusted proceeds |  |  |  |  |  |  |  |  |  |  |  | 796,828,000 |  |  |  |  |  |
Assets sold or impaired: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets | 472,003,000 |  |  |  | 578,258,000 |  |  |  | 472,003,000 | 578,258,000 |  | 51,597,000 |  |  |  |  |  |
Property, plant and equipment, net | 254,632,000 |  |  |  | 238,324,000 |  |  |  | 254,632,000 | 238,324,000 |  | 190,970,000 |  |  |  |  |  |
Telecommunications licenses | 39,687,000 |  |  |  | 39,905,000 |  |  |  | 39,687,000 | 39,905,000 |  | 50,553,000 |  |  |  |  |  |
Other intangible assets |  |  |  |  |  |  |  |  |  |  |  | 37,434,000 |  |  |  |  |  |
Other assets | 7,096,000 |  |  |  | 6,688,000 |  |  |  | 7,096,000 | 6,688,000 |  | 13,202,000 |  |  |  |  |  |
Liabilities sold: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities | (121,073,000) |  |  |  | (170,277,000) |  |  |  | (121,073,000) | (170,277,000) |  | (40,674,000) |  |  |  |  |  |
Other liabilities | (12,784,000) |  |  |  | (11,452,000) |  |  |  | (12,784,000) | (11,452,000) |  | (22,796,000) |  |  |  |  |  |
Net assets sold or impaired |  |  |  |  |  |  |  |  |  |  |  | 280,286,000 |  |  |  |  |  |
Less: Transaction related costs |  |  |  |  |  |  |  |  |  |  |  | (13,517,000) |  |  |  |  |  |
Pre-tax gain |  |  |  |  |  |  |  |  |  |  |  | 503,025,000 |  |  |  |  |  |
Less: Income taxes at effective rate |  |  |  |  |  |  |  |  |  |  |  | 195,923,000 |  |  |  |  |  |
Net gain on sale | 1,905,000 | 305,197,000 |  |  |  |  |  |  | 307,102,000 |  |  | 307,102,000 | 1,900,000 | 305,200,000 |  |  |  |
First release of amount of escrowed cash |  |  |  |  |  |  |  |  |  |  |  | 19,500,000 |  |  |  |  |  |
Second release of amount of escrowed cash |  |  |  |  |  |  |  |  |  |  |  | 19,500,000 |  |  |  |  |  |
Third release of amount of escrowed cash |  |  |  |  |  |  |  |  |  |  |  | 39,000,000 |  |  |  |  |  |
Restricted cash |  |  |  |  |  |  |  |  |  |  |  | 78,000,000 |  |  |  |  |  |
Restricted cash, current | 39,000,000 |  |  |  |  |  |  |  | 39,000,000 |  |  | 39,000,000 |  |  |  |  |  |
Restricted cash, long-term | 39,000,000 |  |  |  |  |  |  |  | 39,000,000 |  |  | 39,000,000 |  |  |  |  |  |
Impairment of intangible assets |  |  |  |  |  |  |  |  | 0 | 3,400,000 |  |  |  |  |  |  |  | 11,900,000
Minority shareholders' interests in sale of operations | 200,000 | 28,699,000 |  |  |  |  |  |  | 28,899,000 |  |  | 28,900,000 |  |  |  |  |  |
Amount distributed to minority shareholders |  |  |  |  |  |  |  |  | 26,155,000 | 2,458,000 | 2,018,000 |  |  |  | 18,900,000 |  |  |
Amount included in non-controlling interests | 56,525,000 |  |  |  | 60,094,000 |  |  |  | 56,525,000 | 60,094,000 |  |  | 10,000,000 |  | 10,000,000 |  |  |
Assets and liabilities of discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,225,000 |  |
Materials and supplies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19,047,000 |  |
Prepayments and other current assets |  |  |  |  |  |  |  |  |  |  |  |  | 4,748,000 |  | 4,748,000 | 5,386,000 |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 212,222,000 |  |
Telecommunications licenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,553,000 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 42,746,000 |  |
Other assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,586,000 |  |
Assets of discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 4,748,000 |  | 4,748,000 | 380,765,000 |  |
Accounts payable and accrued liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 11,187,000 |  | 11,187,000 | 20,486,000 |  |
Accrued taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,475,000 |  |
Advance payments and deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,435,000 |  |
Other current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27,440,000 |  |
Other liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,074,000 |  |
Liabilities of discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 11,187,000 |  | 11,187,000 | 73,910,000 |  |
Revenues and income from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 299,519,000 | 464,382,000 | 496,390,000 |
Income from discontinued operations, net of tax expense (benefit) |  | (1,960,000) | 3,092,000 | 4,034,000 | 5,775,000 | 8,922,000 | 7,942,000 | 6,563,000 | 5,166,000 | 29,202,000 | 10,222,000 |  |  |  | 5,166,000 | 29,202,000 | 10,222,000 |
Income from discontinued operations, tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,512,000 | $ 13,816,000 | $ 1,967,000 |

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