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. 28, 2015
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Vested and expected to vest	2,646
Weighted Average Fair Value, Vested and expected to vest	$ 25.57
Weighted Average Remaining Contractual Term, Vested and expected to vest	1 year 5 months 16 days

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.

No definition available.

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