Commitments and Contingencies - Contingencies (Details) - Company	1 Months Ended	6 Months Ended
Jan. 31, 2012	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Companies named as Potentially Responsible Parties (more than)		100
Percent of contribution to the total waste	0.50%

Site contingencies and current estimates of the potential remediation costs percentage of contribution to total waste.

No definition available.

Name:	amcc_SiteContingenciesAndCurrentEstimatesOfPotentialRemediationCostsPercentageOfContributionToWaste
Namespace Prefix:	amcc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration