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Commitment and Contingencies (Details) - USD ($) $ in Millions | Jul. 28, 2021 | Sep. 25, 2021
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Commitments and Contingencies Disclosure [Abstract] |  |
Capacity reservation fee | $ 50 |
Amount agreed to pre-pay | 175 |
Purchase obligation |  | $ 1,600
Additional non-refundable fee | 10 |
Additional amount agreed to pre-pay | $ 20 |

X
- Definition Long-Term Purchase Commitment, Additional Amount Agreed To Pre-Pay + References No definition available. + Details
Name: | crus_LongTermPurchaseCommitmentAdditionalAmountAgreedToPrePay
Namespace Prefix: | crus_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Long-Term Purchase Commitment, Additional Capacity Reservation Fee + References No definition available. + Details
Name: | crus_LongTermPurchaseCommitmentAdditionalCapacityReservationFee
Namespace Prefix: | crus_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Long-Term Purchase Commitment, Amount Agreed To Pre-Pay + References No definition available. + Details
Name: | crus_LongTermPurchaseCommitmentAmountAgreedToPrePay
Namespace Prefix: | crus_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Long-Term Purchase Commitment, Capacity Reservation Fee + References No definition available. + Details
Name: | crus_LongTermPurchaseCommitmentCapacityReservationFee
Namespace Prefix: | crus_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant