Aggregate purchase price.

No definition available.

Name:	cfvi_AggregatePurchasePrice
Namespace Prefix:	cfvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Business combination gross proceeds, percentage.

+ References

No definition available.

+ Details

Name:	cfvi_BusinessCombinationGrossProceedsPercentage
Namespace Prefix:	cfvi_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	cfvi_ExpensesOfIPO
Namespace Prefix:	cfvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Issued and outstanding ordinary shares percentage.

+ References

No definition available.

+ Details

Name:	cfvi_IssuedAndOutstandingOrdinarySharesPercentage
Namespace Prefix:	cfvi_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	cfvi_RelatedPartyTransactionsDetailsLineItems
Namespace Prefix:	cfvi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Shares cancelled.

+ References

No definition available.

+ Details

Name:	cfvi_SharesCancelled
Namespace Prefix:	cfvi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Subject to forfeiture of shares.

+ References

No definition available.

+ Details

Name:	cfvi_SharesIncludedSubjectToForfeitureOverallotmentOption
Namespace Prefix:	cfvi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Sponsor loan.

+ References

No definition available.

+ Details

Name:	cfvi_SponsorLoan
Namespace Prefix:	cfvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Warrant expire term.

+ References

No definition available.

+ Details

Name:	cfvi_WarrantExpireTerm
Namespace Prefix:	cfvi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Working capital requirements.

+ References

No definition available.

+ Details

Name:	cfvi_WorkingCapitalRequirements
Namespace Prefix:	cfvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

+ References

+ Details

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

- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472

+ Details

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

- Definition

This element represents a description of the primary reason for the business combination which may consist of general categories such as top-line growth, synergistic benefits, market share, and diversification and the more detailed factors that might apply.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: 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(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of issuance costs recognized in a share-lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing, after deduction of accumulated amortization or the effects of subsequent adjustments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL6757479-112611

+ Details

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

- Definition

Amounts due to employees, not to include stockholders or officers.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.17)
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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

- Definition

Amount paid to managing member or general partner, affiliate of managing member or general partner, or affiliate of limited liability company (LLC) or limited partnership (LP) for administrative services provided to the LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

Name:	us-gaap_PaymentForAdministrativeFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares issued which are neither cancelled nor held in the treasury.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=cfvi_BusinessCombinationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=cfvi_FounderSharesMember
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Data Type:	na
Balance Type:
Period Type:

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Name:	srt_TitleOfIndividualAxis=cfvi_SponsorMember
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Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
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Balance Type:
Period Type:

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Related Party Transactions (Details) - USD ($)	1 Months Ended				3 Months Ended	6 Months Ended	8 Months Ended	9 Months Ended
Related Party Transactions (Details) - USD ($)	Feb. 23, 2021	Jan. 31, 2021	Oct. 31, 2020	Apr. 30, 2020	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2021
Related Party Transactions (Details) [Line Items]
Shares issued price per share (in Dollars per share)					$ 10			$ 10
Office space and administrative fees					$ 30,000			$ 72,000
Business Combination [Member]
Related Party Transactions (Details) [Line Items]
Business combination, description								The initial stockholders have agreed, subject to limited exceptions, not to transfer, assign or sell any of its Founder Shares until the earlier to occur of: (A) one year after the completion of the initial Business Combination or (B) subsequent to the initial Business Combination, (x) if the last reported sale price of the Class A common stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20-trading days within any 30-trading day period commencing at least 150 days after the initial Business Combination, or (y) the date on which the Company completes a liquidation, merger, capital stock exchange or other similar transaction that results in all of the Company’s stockholders having the right to exchange their shares of common stock for cash, securities or other property.
Founder Shares [Member]
Related Party Transactions (Details) [Line Items]
Shares cancelled (in Shares)		5,750,000	5,750,000
Issued and outstanding ordinary shares percentage	20.00%
Shares outstanding (in Shares)	7,500,000
Sponsor [Member]
Related Party Transactions (Details) [Line Items]
Pre-IPO note						$ 300,000
Sponsor loan amount					1,750,000			$ 1,750,000
Working capital requirements								10,000
Sponsor loan							$ 0	911,000
Accounts payable outstanding					$ 0		$ 106,000	$ 0
Private Placement [Member]
Related Party Transactions (Details) [Line Items]
Shares Issued (in Shares)					700,000			700,000
Shares issued price per share (in Dollars per share)					$ 10			$ 10
Aggregate purchase price								$ 7,000,000
Warrant expire term								5 years
Initial Pubic Offering [Member]
Related Party Transactions (Details) [Line Items]
Shares issued price per share (in Dollars per share)					$ 10			$ 10
Business combination gross proceeds					$ 10,500,000			$ 10,500,000
Business combination gross proceeds, percentage								3.50%
Amount outstanding					$ 151,000			$ 151,000
Class B Common Stock [Member]
Related Party Transactions (Details) [Line Items]
Common stock, par value (in Dollars per share)					$ 0.0001		$ 0.0001	$ 0.0001
Shares cancelled (in Shares)		5,750,000
Class B Common Stock [Member] \| Founder Shares [Member]
Related Party Transactions (Details) [Line Items]
Shares Issued (in Shares)				20,125,000
Common stock, par value (in Dollars per share)				$ 0.0001
Aggregate price				$ 25,000
Subject to forfeiture of shares (in Shares)	1,125,000
Class A Common Stock [Member]
Related Party Transactions (Details) [Line Items]
Common stock, par value (in Dollars per share)					0.0001		$ 0.0001	0.0001
Shares issued price per share (in Dollars per share)					$ 11.5			$ 11.5