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GOVERNMENT GRANTS (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Letter of credit sub-facility
MOBILITY FUND GRANTS
Letters of credit posted to USAC	$ 5.9
Mobility Funds
MOBILITY FUND GRANTS
Mobility Funds received	$ 21.1
Period over which a portion of the Mobility Funds is used to offset the costs of supporting the networks	5 years
Mobility Funds | U.S. Telecom
MOBILITY FUND GRANTS
Mobility Funds received	$ 21.1
Grant funds used to offset operating expenses	13.9
Mobility funds received and recorded to date	6.1
Mobility Funds | U.S. Telecom | Property, Plant and Equipment
MOBILITY FUND GRANTS
Grant funds used to offset fixed asset related costs	7.2
Mobility Funds | U.S. Telecom | Other current liabilities
MOBILITY FUND GRANTS
Grant funds used to offset operating expenses	5.9
Mobility Funds | U.S. Telecom | Other long-term liabilities
MOBILITY FUND GRANTS
Grant funds used to offset operating expenses	$ 1.9

X

- Definition

Represents the amount of grants received for the construction of assets which are recognized as a reduction of the cost of fixed assets, a reduction of depreciation expense over the useful lives of the assets, and as a reduction of capital expenditures.

+ References

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- Definition

Represents the amount of grants received that offset operating costs.

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- Definition

Amount of Mobility Funds received by the entity since inception of the grant.

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- Definition

Amount of Mobility Funds received by the entity since inception of the grant and recorded to date.

+ References

No definition available.

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- Definition

Represents the period over which a portion of the Mobility Funds is used to offset the costs of supporting the networks.

+ References

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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