Commitment and Contingencies (Details) - USD ($) $ in Millions	Jul. 28, 2021	Sep. 27, 2025
Commitments and Contingencies Disclosure [Abstract]
Capacity reservation fee	$ 60.0
Capacity reservation fee remaining		$ 12.0
Prepaid wafers	$ 195.0
Prepaid wafers balance		$ 45.0
Lease term		10 years
Liability for future lease payments		$ 4.8

Payments for Long-Term Purchase Commitment, Capacity Reservation Fee

No definition available.

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Namespace Prefix:	crus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Payments For Purchase Commitments, Prepaid Wafers

+ References

No definition available.

+ Details

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Namespace Prefix:	crus_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Purchase Commitments, Prepaid Wafers

+ References

No definition available.

+ Details

Name:	crus_PurchaseCommitmentsPrepaidWafers
Namespace Prefix:	crus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Unamortized Capacity Reservation Fees

+ References

No definition available.

+ Details

Name:	crus_UnamortizedCapacityReservationFees
Namespace Prefix:	crus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

+ Details

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