The amount of accounts receivable sold during the period as part of factoring arrangements.

No definition available.

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

- Definition

Number of receivable facilities.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

The amount of borrowings outstanding on the accounts receivable securitization facility as of the balance sheet date.

+ References

No definition available.

+ Details

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

- Definition

The maximum borrowing availability under the accounts receivable securitization facility as of the balance sheet date, based on the quantity and quality of outstanding accounts receivable.

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity of the accounts receivable securitization facility based on the terms of the agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000716133_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The remaining borrowing availability under the accounts receivable securitization facility as of the balance sheet date (after subtracting outstanding letters of credit), based on the quantity and quality of outstanding accounts receivable.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000716133_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Receivables facility renewal period.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000716133_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Receivables facility termination period.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000716133_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 50
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-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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

- Details

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- Details

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Debt and Other Financing Arrangements - Accounts Receivable Securitization Facility - Narrative (Details)		1 Months Ended	12 Months Ended
	Jan. 31, 2023 USD ($) Facility	Nov. 30, 2021	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Receivables facility maximum borrowing capacity			$ 215,000,000.0
Receivables Facility Maximum Borrowing Availability			215,000,000.0
Receivables Facility			186,900,000	$ 153,600,000
Letters of Credit Outstanding, Amount			19,300,000
Receivables Facility Remaining Borrowing Capacity			$ 8,800,000
Debt instrument, interest rate during period			3.30%
Accounts receivable sold			$ 56,800,000	$ 0
Receivables Facilities [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.40%
Term B-1 Loans [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.50%
Debt instrument, interest rate during period		3.50%
Term B-1 Loans [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%
Term B-1 Loans [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		3.25%
Term B-1 Loans [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		3.50%
Subsequent Event [Member]
Debt Instrument [Line Items]
Receivables facility maximum borrowing capacity	$ 280,000,000.0
Receivables facility renewal date	2025-01
Receivables facility termination date	2026-01
Number of receivable facility \| Facility	2
Subsequent Event [Member] \| Network Receivables Facility [Member]
Debt Instrument [Line Items]
Receivables facility maximum borrowing capacity	$ 55,000,000.0
Subsequent Event [Member] \| CBTS Receivable Facility [Member]
Debt Instrument [Line Items]
Receivables facility maximum borrowing capacity	$ 225,000,000.0