Maximum term of capital lease period in Years

No definition available.

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- Definition

Minimum Term of Capital Leases for repayment based on expiration date of original lease contract

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No definition available.

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- Definition

Defined Benefit Plan, Lease term of contributed property

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- Definition

Represents the issue price of the senior unsecured note expressed as a percentage of principal amount of the instrument.

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The initial pricing for LIBOR borrowings under the Credit Agreement.

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No definition available.

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The maximum permitted leverage ratio under the credit agreement during the 2nd Covenant Term.

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No definition available.

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The maximum permitted leverage ratio under the credit agreement during the 3rd Covenant Term.

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No definition available.

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The maximum permitted leverage ratio under the credit agreement during the 4th covenant term.

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The maximum permitted leverage ratio under the credit agreement during the covenant's intial term period.

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Line Of Credit Facility Increased Periodic Payment Principal

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Long Term Debt Assumed in Acquisition

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- Definition

Pension Building Contribution Aggregate Annual Rent

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Maximum term of the lease(s) related to the assets being leased-back in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

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No definition available.

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Minimum term of the lease(s) related to the assets being leased-back in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

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No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Value of property contributed in noncash investing and financing activities.

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-Topic 230
-SubTopic 10
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The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Fair value of assets transferred into (out of) a defined benefit pension plan.

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No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The effective interest rate during the reporting period.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of the required periodic payment applied to principal.

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- Definition

Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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- Definition

Secured financing other than securities sold under agreements to repurchase and securities loaned.

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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

No definition available.

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Long-Term Debt (Narrative) (Details) - USD ($)				12 Months Ended
Long-Term Debt (Narrative) (Details) - USD ($)	Feb. 27, 2017	Jun. 30, 2016	Apr. 01, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2015	Aug. 12, 2015
Debt Instrument [Line Items]
Loss on debt exchanges				$ (7,000,000)
Issue price expressed as a percentage of principal amount (in hundredths)				100.00%
Proceeds from debt, net of issuance costs				$ 1,519,000,000
Long Term Debt Assumed				600,000,000
Financing obligation for contribution of real property to pension plan				15,000,000		$ 15,000,000
Fair value of property contributed to plan				15,000,000
Pension Building Contribution Aggregate Annual Rent				$ 2,000,000
Lease term of contributed property				15 years
Other liabilities				$ 372,000,000	$ 240,000,000
Sale and leaseback term, minimum (in years)				12 years
Sale and leaseback term, maximum (in years)				23 years
Capital Lease Term, minimum years				1 year
Capital Lease Term, maximum years				7 years
Secured equipment financing					3,000,000	$ 11,000,000
2016 Pension Real Estate Contributions [Member]
Debt Instrument [Line Items]
Financing obligation for contribution of real property to pension plan				$ 15,000,000
Senior Note Due 4/15/2017 [Member] \| Exchangeable Debt [Member]
Debt Instrument [Line Items]
Debt Conversion, Original Debt, Amount				397,000,000
Loss on debt exchanges				$ 7,000,000
Interest Rate				8.25%
Senior Note Due 4/15/2020 [Member] \| Exchangeable Debt [Member]
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Amount				$ 147,000,000
Interest Rate				8.50%
Senior Note Due 9/15/2020 [Member] \| Exchangeable Debt [Member]
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Amount				$ 66,000,000
Interest Rate				8.875%
Senior Note Due 9/15/2022 [Member] \| Exchangeable Debt [Member]
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Amount				$ 188,000,000
Interest Rate				10.50%
Secured Equipment Financing [Member]
Debt Instrument [Line Items]
Interest Rate				0.00%
Secured equipment financing term				4 years
Verizon Bridge Facility [Member]
Debt Instrument [Line Items]
Interest expense				$ 10,000,000	184,000,000
Accrued financing liabilities					$ 184,000,000
Verizon Transaction
Debt Instrument [Line Items]
Long Term Debt Assumed			$ 600,000,000
Verizon Transaction \| Subsidiary Senior Note Due 5/15/2027 [Member]
Debt Instrument [Line Items]
Interest Rate			6.75%
Long Term Debt Assumed			$ 200,000,000
Verizon Transaction \| Subsidiary Senior Note Due 2/1/2028 [Member]
Debt Instrument [Line Items]
Interest Rate			6.86%
Long Term Debt Assumed			$ 300,000,000
Verizon Transaction \| Subsidiary Senior Note Due 11/15/2031 [Member]
Debt Instrument [Line Items]
Interest Rate			8.50%
Long Term Debt Assumed			$ 100,000,000
Senior Unsecured Debt [Member] \| Senior Note Due 4/15/2017 [Member]
Debt Instrument [Line Items]
Interest Rate				8.25%	8.25%
Debt instrument, maturity date				Apr. 15, 2017
Senior Unsecured Debt [Member] \| Senior Note Due 4/15/2020 [Member]
Debt Instrument [Line Items]
Interest Rate				8.50%	8.50%
Debt instrument, maturity date				Apr. 15, 2020
Senior Unsecured Debt [Member] \| Senior Note Due 9/15/2020 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 1,000,000,000
Interest Rate				8.875%	8.875%
Debt instrument, maturity date				Sep. 15, 2020
Senior Unsecured Debt [Member] \| Senior Note Due 7/1/2021 [Member]
Debt Instrument [Line Items]
Interest Rate				9.25%	9.25%
Debt instrument, maturity date				Jul. 01, 2021
Senior Unsecured Debt [Member] \| Senior Note Due 9/15/2021 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 775,000,000
Interest Rate				6.25%	6.25%
Debt instrument, maturity date				Sep. 15, 2021
Senior Unsecured Debt [Member] \| Senior Note Due 9/15/2022 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 2,000,000,000
Interest Rate				10.50%	10.50%
Debt instrument, maturity date				Sep. 15, 2022
Senior Unsecured Debt [Member] \| Senior Note Due 1/15/2025 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 775,000,000
Interest Rate				6.875%	6.875%
Debt instrument, maturity date				Jan. 15, 2025
Senior Unsecured Debt [Member] \| Senior Note Due 9/15/2025 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 3,600,000,000
Interest Rate				11.00%	11.00%
Debt instrument, maturity date				Sep. 15, 2025
Senior Unsecured Debt [Member] \| Verizon Transaction
Debt Instrument [Line Items]
Debt instrument, face amount					$ 6,600,000,000		$ 6,600,000,000
Proceeds from debt, net of issuance costs					6,485,000,000
CoBank Term Loan 2014 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 350,000,000
Debt instrument, maturity date				Oct. 24, 2019
Repayment of the outstanding principal balance, quarterly installments amount				$ 9,000,000
Repayment of the outstanding principal balance, quarterly installments amount				$ 9,000,000
Interest Rate Margin				3.375%
CoBank Term Loan 2016 Member
Debt Instrument [Line Items]
Debt instrument, maturity date				Oct. 12, 2021
Long-term Line of Credit				$ 315,000,000
Repayment of the outstanding principal balance, quarterly installments amount				8,000,000
Repayment of the outstanding principal balance, quarterly installments amount				8,000,000
Line of credit facility, current borrowings				$ 315,000,000
2015 JP Morgan Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date				Mar. 31, 2021
Line of credit facility maximum borrowing capacity					$ 1,625,000,000			$ 1,500,000,000
Long-term Line of Credit			1,550,000,000	$ 75,000,000
Repayment of the outstanding principal balance, quarterly installments amount		$ 20,000,000
Repayment of the outstanding principal balance, quarterly installments amount		$ 20,000,000
Line Of Credit Facility Increased Periodic Payment Principal				41,000,000
Line of credit facility, current borrowings			$ 1,550,000,000	75,000,000
2017 JP Morgan Credit Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Permitted Leverage Ratio - Initial Covenant Term	5.25%
Line of Credit Facility, Maximum Permitted Leverage Ratio - 2nd Covenant Term	5.00%
Line of Credit Facility, Maximum Permitted Leverage Ratio - 3rd Covenant Term	4.75%
Line of Credit Facility, Maximum Permitted Leverage Ratio - 4th Covenant Term	4.50%
Line of credit facility maximum borrowing capacity	$ 850,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity				750,000,000
Long-term Line of Credit				0
Line of credit facility, current borrowings				$ 0
Interest Rate (in thousandths)				0.45%
Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Initial pricing for LIBOR based borrowings (in hundredths)				1.50%
Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Initial pricing for LIBOR based borrowings (in hundredths)				2.50%
Minimum [Member] \| CoBank Term Loan 2014 [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate Margin				0.875%
Minimum [Member] \| CoBank Term Loan 2014 [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate Margin				1.875%
Minimum [Member] \| CoBank Term Loan 2016 Member \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate				0.875%
Minimum [Member] \| CoBank Term Loan 2016 Member \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate				1.875%
Minimum [Member] \| 2015 JP Morgan Credit Agreement [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate				0.75%
Minimum [Member] \| 2015 JP Morgan Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate				1.75%
Minimum [Member] \| Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate Margin				0.50%
Minimum [Member] \| Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate Margin				1.50%
Maximum [Member] \| CoBank Term Loan 2014 [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate Margin				2.875%
Maximum [Member] \| CoBank Term Loan 2014 [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate Margin				3.875%
Maximum [Member] \| CoBank Term Loan 2016 Member \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate				2.875%
Maximum [Member] \| CoBank Term Loan 2016 Member \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate				3.875%
Maximum [Member] \| 2015 JP Morgan Credit Agreement [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate				1.75%
Maximum [Member] \| 2015 JP Morgan Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate				2.75%
Maximum [Member] \| Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest Rate Margin				1.50%
Maximum [Member] \| Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate Margin				2.50%