XML 95 R82.htm IDEA: XBRL DOCUMENT
v3.22.2

Unit-based Compensation - Summary of VAP Units Outstanding and Vested (Detail) - Officers Employees And Directors [Member] - Value Appreciation Rights [Member] - shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 26, 2022 | Sep. 25, 2021 | Sep. 26, 2020 | Sep. 28, 2019
Schedule of Share based Compensation Restricted Stock And Restricted Stock Units Activity [Line Items] |  |  |  |
Balance at beginning of period | 4,039,620 | 4,389,257 | 5,053,182 | 7,574,464
Granted | 0 | 0 | 0 | 0
Exercised | (255,845) |  |  |
Forfeited | (92,664) | (349,637) | (663,925) | (2,521,282)
Balance at end of period | 3,691,111 | 4,039,620 | 4,389,257 | 5,053,182
Vested at September 25, 2021 | 3,554,588 | 3,672,430 |  |
Vested and exercisable at September 25, 2021 | 2,369,725 | 2,448,287 |  |

X
- Definition Schedule of sharebased compensation restricted stock and restricted stock units activity [Line items]. + References No definition available. + Details
Name: | sym_ScheduleOfShareBasedCompensationRestrictedStockAndRestrictedStockUnitsActivityLineItems
Namespace Prefix: | sym_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation by share based award equity instruments other than options cumulatively vested. + References No definition available. + Details
Name: | sym_ShareBasedCompensationByShareBasedAwardEquityInstrumentsOtherThanOptionsCumulativelyVested
Namespace Prefix: | sym_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition share based compensation by share based award equity instruments other than options vested and excercisable. + References No definition available. + Details
Name: | sym_ShareBasedCompensationByShareBasedAwardEquityInstrumentsOtherThanOptionsVestedAndExercisable
Namespace Prefix: | sym_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-option equity instruments exercised by participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_TitleOfIndividualAxis=sym_OfficersEmployeesAndDirectorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=sym_ValueAppreciationRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |