Government Assistance, Allocated Support Payments

No definition available.

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- Definition

Government Assistance, Percentage

+ References

No definition available.

+ Details

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- Definition

Government Assistance Receivable

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of government assistance recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 832
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483507/832-10-50-3

+ Details

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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

+ Details

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- Definition

Indicates line item in statement of income or comprehensive income that includes government assistance.

+ References

+ Details

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- Definition

Duration of government assistance transaction, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 832
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483507/832-10-50-4

+ Details

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Period Type:	duration

- Details

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- Details

Name:	us-gaap_GovernmentAssistanceTypeAxis=lumn_CAFIIProgramMember
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- Details

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Revenue Recognition - Governmental Funding (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended			84 Months Ended
	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020	Dec. 31, 2021
Government Assistance [Line Items]
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]		OPERATING REVENUE	OPERATING REVENUE
Government funding		$ 85	$ 190
State Universal Service Fund Support Programs
Government Assistance [Line Items]
Government assistance (as a percent)		17.00%	31.00%
CAF II Program
Government Assistance [Line Items]
Government funding	$ 59				$ 500
RDOF Phase I Program
Government Assistance [Line Items]
Government funding		$ 17	$ 17
Allocated support payments				$ 6,400
Support payments period (in years)				10 years
Government funding receivable				$ 17