XML 66 R51.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Summary of Significant Accounting Policies - Non-controlling Interest (Details) - USD ($) | 12 Months Ended
--- | ---
Mar. 29, 2024 | Mar. 31, 2023 | Mar. 25, 2022
Money Market Funds |  |  |
Noncontrolling Interest [Line Items] |  |  |
Unrealized gains on marketable securities | $ 0 | $ 0 | $ 0
Affiliated Entity in Philippines |  |  |
Noncontrolling Interest [Line Items] |  |  |
Ownership percentage by majority shareholder | 40.00% |  |
Noncontrolling interest ownership percentage | 60.00% |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_MinorityInterestLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_UnrealizedGainLossOnInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=algm_AffiliatedEntityInPhilippinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |