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Equity Compensation (Summary of Restricted Stock Units Vested and Expected to Vest) (Details) (Restricted Stock Units (RSUs) [Member], USD $) Share data in Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2014
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Vested and expected to vest	2,174
Weighted Average Fair Value, Vested and expected to vest	$ 25.26
Weighted Average Remaining Contractual Term, Vested and expected to vest	1 year 5 months 16 days

X

- Definition

As of the balance sheet date, the number of shares into which fully vested and expected to vest restricted stock units outstanding can be converted under the plan.

+ References

No definition available.

+ Details

Name:	crus_SharesVestedAndExpectedToVest
Namespace Prefix:	crus_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

As of the balance sheet date, the weighted-average fair value for restricted stock units that are fully vested or expected to vest.

+ References

No definition available.

+ Details

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

X

- Definition

Weighted average remaining contractual term for fully vested and expected to vest restricted stock units, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	crus_WeightedAverageRemainingContractualTermVestedAndExpectedToVest
Namespace Prefix:	crus_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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