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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	na
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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.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

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- Details

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Long-Term Debt and Credit Facilities Long-Term Debt and Credit Facilities (Details 2) - Senior notes - USD ($) $ in Millions	1 Months Ended
	Apr. 30, 2016	Jan. 31, 2016	Jun. 01, 2016	May 02, 2016
CenturyLink, Inc. \| 7.5% Notes due 2024
Long-term Debt and Credit Facilities
Debt instrument, face amount	$ 1,000
Stated interest rate (percent)	7.50%
Proceeds from debt, net of issuance costs	$ 988
Qwest Corporation \| 7.00% Notes due 2056
Long-term Debt and Credit Facilities
Debt instrument, face amount		$ 235
Stated interest rate (percent)		7.00%
Proceeds from debt, net of issuance costs		$ 227
Qwest Corporation \| 8.375% Notes due 2016
Long-term Debt and Credit Facilities
Stated interest rate (percent)				8.375%
Debt instrument, repurchased face amount				$ 235
Embarq Corporation \| 7.082% Notes due 2016
Long-term Debt and Credit Facilities
Stated interest rate (percent)			7.082%
Debt instrument, repurchased face amount			$ 1,184