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

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

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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.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

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Long-Term Debt and Credit Facilities - Term Loans and Certain Other Debt of Subsidiaries (Details) - USD ($) $ in Millions			12 Months Ended
	Oct. 23, 2020	Nov. 27, 2019	Dec. 31, 2022	Dec. 31, 2021
Qwest Corporation \| Term Loan
Long-term Debt and Credit Facilities
Long-term debt, gross			$ 215	$ 215
Qwest Corporation \| Term Loan \| LIBOR
Long-term Debt and Credit Facilities
Basis spread (as a percent)			2.25%
Qwest Corporation \| CoBank ACB \| Variable Rate Term Loan
Long-term Debt and Credit Facilities
Proceeds from issuance of debt	$ 215
Qwest Corporation \| CoBank ACB \| Variable Rate Term Loan \| Minimum \| LIBOR
Long-term Debt and Credit Facilities
Basis spread (as a percent)	1.50%
Qwest Corporation \| CoBank ACB \| Variable Rate Term Loan \| Minimum \| Base Rate
Long-term Debt and Credit Facilities
Basis spread (as a percent)	0.50%
Qwest Corporation \| CoBank ACB \| Variable Rate Term Loan \| Maximum \| LIBOR
Long-term Debt and Credit Facilities
Basis spread (as a percent)	2.50%
Qwest Corporation \| CoBank ACB \| Variable Rate Term Loan \| Maximum \| Base Rate
Long-term Debt and Credit Facilities
Basis spread (as a percent)	1.50%
Level 3 Financing, Inc. \| Term Loan \| Tranche B 2027 Term Loan
Long-term Debt and Credit Facilities
Long-term debt, gross			$ 2,411	$ 3,111
Level 3 Financing, Inc. \| Term Loan \| Tranche B 2027 Term Loan \| LIBOR
Long-term Debt and Credit Facilities
Basis spread (as a percent)		1.00%	1.75%
Level 3 Financing, Inc. \| Term Loan \| Tranche B 2027 Term Loan \| Base Rate
Long-term Debt and Credit Facilities
Basis spread (as a percent)		0.75%
Level 3 Financing, Inc. \| Term Loan \| Tranche B 2027 Term Loan \| Federal Funds Effective Rate
Long-term Debt and Credit Facilities
Basis spread (as a percent)		0.50%
Level 3 Financing, Inc. \| Term Loan \| Tranche B 2027 Term Loan \| Eurodollar
Long-term Debt and Credit Facilities
Basis spread (as a percent)		1.75%