{ "instance": { "lyel-20220331.htm": { "axisCustom": 1, "axisStandard": 23, "contextCount": 204, "dts": { "calculationLink": { "local": [ "lyel-20220331_cal.xml" ] }, "definitionLink": { "local": [ "lyel-20220331_def.xml" ] }, "inline": { "local": [ "lyel-20220331.htm" ] }, "labelLink": { "local": [ "lyel-20220331_lab.xml" ] }, "presentationLink": { "local": [ "lyel-20220331_pre.xml" ] }, "schema": { "local": [ "lyel-20220331.xsd" ], "remote": [ "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd", "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd", "http://www.xbrl.org/2003/xl-2003-12-31.xsd", "http://www.xbrl.org/2003/xlink-2003-12-31.xsd", "http://www.xbrl.org/2005/xbrldt-2005.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.xsd", "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd", "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd", "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-roles-2021-01-31.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-types-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-roles-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-types-2021-01-31.xsd", "https://xbrl.sec.gov/country/2021/country-2021.xsd", "https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd" ] } }, "elementCount": 462, "entityCount": 1, "hidden": { "http://fasb.org/us-gaap/2021-01-31": 1, "http://xbrl.sec.gov/dei/2021q4": 5, "total": 6 }, "keyCustom": 60, "keyStandard": 231, "memberCustom": 24, "memberStandard": 29, "nsprefix": "lyel", "nsuri": "http://lyell.com/20220331", "report": { "R1": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "true", "longName": "0001001 - Document - Cover", "role": "http://lyell.com/role/Cover", "shortName": "Cover", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CashCashEquivalentsAndMarketableSecuritiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2109104 - Disclosure - Cash Equivalents and Marketable Securities", "role": "http://lyell.com/role/CashEquivalentsandMarketableSecurities", "shortName": "Cash Equivalents and Marketable Securities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CashCashEquivalentsAndMarketableSecuritiesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "lyel:OtherInvestmentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2113105 - Disclosure - Other Investments", "role": "http://lyell.com/role/OtherInvestments", "shortName": "Other Investments", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "lyel:OtherInvestmentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2115106 - Disclosure - Fair Value Measurements", "role": "http://lyell.com/role/FairValueMeasurements", "shortName": "Fair Value Measurements", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2120107 - Disclosure - Leases", "role": "http://lyell.com/role/Leases", "shortName": "Leases", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PreferredStockTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2124108 - Disclosure - Convertible Preferred Stock", "role": "http://lyell.com/role/ConvertiblePreferredStock", "shortName": "Convertible Preferred Stock", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PreferredStockTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2126109 - Disclosure - Stockholders' Equity", "role": "http://lyell.com/role/StockholdersEquity", "shortName": "Stockholders' Equity", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2128110 - Disclosure - Stock-based Compensation", "role": "http://lyell.com/role/StockbasedCompensation", "shortName": "Stock-based Compensation", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2136111 - Disclosure - Net Loss Per Share", "role": "http://lyell.com/role/NetLossPerShare", "shortName": "Net Loss Per Share", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2139112 - Disclosure - Commitments and Contingencies", "role": "http://lyell.com/role/CommitmentsandContingencies", "shortName": "Commitments and Contingencies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2140113 - Disclosure - Related-party Transactions", "role": "http://lyell.com/role/RelatedpartyTransactions", "shortName": "Related-party Transactions", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1001002 - Statement - Condensed Consolidated Balance Sheets", "role": "http://lyell.com/role/CondensedConsolidatedBalanceSheets", "shortName": "Condensed Consolidated Balance Sheets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:PrepaidExpenseAndOtherAssetsCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R20": { "firstAnchor": null, "groupType": "disclosure", "isDefault": "false", "longName": "2142114 - Disclosure - Subsequent Events", "role": "http://lyell.com/role/SubsequentEvents", "shortName": "Subsequent Events", "subGroupType": "", "uniqueAnchor": null }, "R21": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2204201 - Disclosure - Basis of Presentation and Significant Accounting Policies (Policies)", "role": "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies", "shortName": "Basis of Presentation and Significant Accounting Policies (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2306301 - Disclosure - License, Collaboration, and Success Payment Agreements (Tables)", "role": "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsTables", "shortName": "License, Collaboration, and Success Payment Agreements (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "us-gaap:DebtSecuritiesAvailableForSaleTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2310302 - Disclosure - Cash Equivalents and Marketable Securities (Tables)", "role": "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesTables", "shortName": "Cash Equivalents and Marketable Securities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:DebtSecuritiesAvailableForSaleTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2316303 - Disclosure - Fair Value Measurements (Tables)", "role": "http://lyell.com/role/FairValueMeasurementsTables", "shortName": "Fair Value Measurements (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "lyel:AssetsAndLiabilitiesLesseeTableTextBlock", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2321304 - Disclosure - Leases (Tables)", "role": "http://lyell.com/role/LeasesTables", "shortName": "Leases (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "lyel:AssetsAndLiabilitiesLesseeTableTextBlock", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2329305 - Disclosure - Stock-based Compensation (Tables)", "role": "http://lyell.com/role/StockbasedCompensationTables", "shortName": "Stock-based Compensation (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2337306 - Disclosure - Net Loss Per Share (Tables)", "role": "http://lyell.com/role/NetLossPerShareTables", "shortName": "Net Loss Per Share (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "ix:continuation", "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i3c1d4e1ca7ae4f4f99c220ebeab1d499_D20210601-20210630", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2402401 - Disclosure - Organization (Details)", "role": "http://lyell.com/role/OrganizationDetails", "shortName": "Organization (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "ix:continuation", "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i3c1d4e1ca7ae4f4f99c220ebeab1d499_D20210601-20210630", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:ResearchAndDevelopmentExpense", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2407402 - Disclosure - License, Collaboration, and Success Payment Agreements - Narrative (Details)", "role": "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "shortName": "License, Collaboration, and Success Payment Agreements - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ifb2dc97cf3094102950c959afd1bc7c9_I20201031", "decimals": "2", "lang": "en-US", "name": "us-gaap:SharesIssuedPricePerShare", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:PreferredStockParOrStatedValuePerShare", "reportCount": 1, "unitRef": "usdPerShare", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1002003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)", "role": "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "shortName": "Condensed Consolidated Balance Sheets (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "us-gaap:PreferredStockSharesIssued", "us-gaap:PreferredStockSharesOutstanding", "us-gaap:PreferredStockSharesOutstanding", "span", "div", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:PreferredStockSharesIssued", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R30": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i14a3f3d3662c4d998ff9d9d0bd28c0fd_I20181231", "decimals": "INF", "first": true, "lang": "en-US", "name": "lyel:CollaborativeArrangementRightsAndObligationsPotentialPaymentMultiplier", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2408403 - Disclosure - License, Collaboration, and Success Payment Agreements - Schedule of Aggregate Potential Success Payments (Details)", "role": "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails", "shortName": "License, Collaboration, and Success Payment Agreements - Schedule of Aggregate Potential Success Payments (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i14a3f3d3662c4d998ff9d9d0bd28c0fd_I20181231", "decimals": "INF", "first": true, "lang": "en-US", "name": "lyel:CollaborativeArrangementRightsAndObligationsPotentialPaymentMultiplier", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2411404 - Disclosure - Cash Equivalents and Marketable Securities - Schedule of Fair Value and Amortized Cost of Cash Equivalents and Marketable Securities (Details)", "role": "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "shortName": "Cash Equivalents and Marketable Securities - Schedule of Fair Value and Amortized Cost of Cash Equivalents and Marketable Securities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock", "us-gaap:DebtSecuritiesAvailableForSaleTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "lang": "en-US", "name": "lyel:CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2412405 - Disclosure - Cash Equivalents and Marketable Securities - Narrative (Details)", "role": "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails", "shortName": "Cash Equivalents and Marketable Securities - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i16cc68737f0d415e98ae51f83b0e377c_I20211231", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:OtherInvestments", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2414406 - Disclosure - Other Investments (Details)", "role": "http://lyell.com/role/OtherInvestmentsDetails", "shortName": "Other Investments (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i4992d5453af747aab98a50d07d1c330a_I20211231", "decimals": "-5", "lang": "en-US", "name": "us-gaap:NoncontrollingInterestInVariableInterestEntity", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:EquitySecuritiesFvNi", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2417407 - Disclosure - Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)", "role": "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails", "shortName": "Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:EquitySecuritiesFvNi", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ia54b45d221224d1ab20017da60429b54_I20220331", "decimals": "2", "first": true, "lang": "en-US", "name": "lyel:FairValueOfSeriesAConvertiblePreferredStock", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2418408 - Disclosure - Fair Value Measurements - Summary of Estimated Fair Value of Success Payment Liability Assumptions (Details)", "role": "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails", "shortName": "Fair Value Measurements - Summary of Estimated Fair Value of Success Payment Liability Assumptions (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ia54b45d221224d1ab20017da60429b54_I20220331", "decimals": "2", "first": true, "lang": "en-US", "name": "lyel:FairValueOfSeriesAConvertiblePreferredStock", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i598dd2df05b6460fb31e9697e597b83d_I20211231", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2419409 - Disclosure - Fair Value Measurements - Summary of Changes in Estimated Fair Value of Financial Liabilities (Details)", "role": "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails", "shortName": "Fair Value Measurements - Summary of Changes in Estimated Fair Value of Financial Liabilities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i598dd2df05b6460fb31e9697e597b83d_I20211231", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "lyel:AssetsAndLiabilitiesLesseeTableTextBlock", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2422410 - Disclosure - Leases - Summary of Operating Lease Commitments Including Expected Lease Incentives to be Received (Details)", "role": "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails", "shortName": "Leases - Summary of Operating Lease Commitments Including Expected Lease Incentives to be Received (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "lyel:AssetsAndLiabilitiesLesseeTableTextBlock", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:OperatingLeaseCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2423411 - Disclosure - Leases - Narrative (Details)", "role": "http://lyell.com/role/LeasesNarrativeDetails", "shortName": "Leases - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:OperatingLeaseCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "ix:continuation", "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i080cd84c9ed5439a879cb854b74cc816_I20210630", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ConvertiblePreferredStockSharesIssuedUponConversion", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2425412 - Disclosure - Convertible Preferred Stock (Details)", "role": "http://lyell.com/role/ConvertiblePreferredStockDetails", "shortName": "Convertible Preferred Stock (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "ix:continuation", "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i080cd84c9ed5439a879cb854b74cc816_I20210630", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ConvertiblePreferredStockSharesIssuedUponConversion", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:Revenues", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1003004 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Loss", "role": "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "shortName": "Condensed Consolidated Statements of Operations and Comprehensive Loss", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:Revenues", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:PreferredStockSharesAuthorized", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2427413 - Disclosure - Stockholders' Equity (Details)", "role": "http://lyell.com/role/StockholdersEquityDetails", "shortName": "Stockholders' Equity (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R41": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2430414 - Disclosure - Stock-based Compensation - Narrative (Details)", "role": "http://lyell.com/role/StockbasedCompensationNarrativeDetails", "shortName": "Stock-based Compensation - Narrative (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "ie3baf0959b384bcdb3056cbb8c9a7b93_I20220331", "decimals": "-5", "first": true, "lang": "en-US", "name": "us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2431415 - Disclosure - Stock-based Compensation - Schedule of Stock-Based Compensation Expense by Classification (Details)", "role": "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails", "shortName": "Stock-based Compensation - Schedule of Stock-Based Compensation Expense by Classification (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:AllocatedShareBasedCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "ix:continuation", "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i6db32befa7064763abf275cf83f2a937_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2432416 - Disclosure - Stock-based Compensation - Summary of RSA Activity (Details)", "role": "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails", "shortName": "Stock-based Compensation - Summary of RSA Activity (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:NonvestedRestrictedStockSharesActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i5e504114566143209af83e6f7fab4850_D20220101-20220331", "decimals": "INF", "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i714584c11f0f4b3295b4115c7c904c43_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2433417 - Disclosure - Stock-based Compensation - Restricted Stock Units (Details)", "role": "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "shortName": "Stock-based Compensation - Restricted Stock Units (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i714584c11f0f4b3295b4115c7c904c43_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R45": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i16cc68737f0d415e98ae51f83b0e377c_I20211231", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2434418 - Disclosure - Stock-based Compensation - Summary of Stock Option Activity (Details)", "role": "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails", "shortName": "Stock-based Compensation - Summary of Stock Option Activity (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "INF", "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R46": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "4", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2435419 - Disclosure - Stock-based Compensation - Schedule of Assumptions Used in Black-Scholes Option-Pricing Model for Estimating Fair Value of Stock Options Granted (Details)", "role": "http://lyell.com/role/StockbasedCompensationScheduleofAssumptionsUsedinBlackScholesOptionPricingModelforEstimatingFairValueofStockOptionsGrantedDetails", "shortName": "Stock-based Compensation - Schedule of Assumptions Used in Black-Scholes Option-Pricing Model for Estimating Fair Value of Stock Options Granted (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "4", "first": true, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R47": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2438420 - Disclosure - Net Loss Per Share (Details)", "role": "http://lyell.com/role/NetLossPerShareDetails", "shortName": "Net Loss Per Share (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "INF", "first": true, "lang": "en-US", "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R48": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i15b9abd87dac4a8eac0171722836998a_I20210531", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:NetRentableArea", "reportCount": 1, "unitRef": "sqft", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2441421 - Disclosure - Related-party Transactions (Details)", "role": "http://lyell.com/role/RelatedpartyTransactionsDetails", "shortName": "Related-party Transactions (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "ix:continuation", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7f3ef206dbdf4dce9871e80d1ed36604_I20220331", "decimals": "-5", "lang": "en-US", "name": "us-gaap:DueToRelatedPartiesCurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i0c0e760fee364fc4b8ea80877415aeab_I20201231", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:TemporaryEquitySharesOutstanding", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1004005 - Statement - Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit)", "role": "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "shortName": "Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i0c0e760fee364fc4b8ea80877415aeab_I20201231", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:TemporaryEquitySharesOutstanding", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R6": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-3", "first": true, "lang": "en-US", "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "1005006 - Statement - Condensed Consolidated Statements of Cash Flows", "role": "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows", "shortName": "Condensed Consolidated Statements of Cash Flows", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": "-3", "lang": "en-US", "name": "us-gaap:ShareBasedCompensation", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2101101 - Disclosure - Organization", "role": "http://lyell.com/role/Organization", "shortName": "Organization", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2103102 - Disclosure - Basis of Presentation and Significant Accounting Policies", "role": "http://lyell.com/role/BasisofPresentationandSignificantAccountingPolicies", "shortName": "Basis of Presentation and Significant Accounting Policies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CollaborativeArrangementDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "2105103 - Disclosure - License, Collaboration, and Success Payment Agreements", "role": "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreements", "shortName": "License, Collaboration, and Success Payment Agreements", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "lyel-20220331.htm", "contextRef": "i7bb0ef65b18348d296a955f8b1052cc5_D20220101-20220331", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CollaborativeArrangementDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } } }, "segmentCount": 58, "tag": { "dei_AmendmentFlag": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.", "label": "Amendment Flag", "terseLabel": "Amendment Flag" } } }, "localname": "AmendmentFlag", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_CityAreaCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Area code of city", "label": "City Area Code", "terseLabel": "City Area Code" } } }, "localname": "CityAreaCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_CoverAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Cover page.", "label": "Cover [Abstract]", "terseLabel": "Cover [Abstract]" } } }, "localname": "CoverAbstract", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "xbrltype": "stringItemType" }, "dei_CurrentFiscalYearEndDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "End date of current fiscal year in the format --MM-DD.", "label": "Current Fiscal Year End Date", "terseLabel": "Current Fiscal Year End Date" } } }, "localname": "CurrentFiscalYearEndDate", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "gMonthDayItemType" }, "dei_DocumentFiscalPeriodFocus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.", "label": "Document Fiscal Period Focus", "terseLabel": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "fiscalPeriodItemType" }, "dei_DocumentFiscalYearFocus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.", "label": "Document Fiscal Year Focus", "terseLabel": "Document Fiscal Year Focus" } } }, "localname": "DocumentFiscalYearFocus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "gYearItemType" }, "dei_DocumentPeriodEndDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.", "label": "Document Period End Date", "terseLabel": "Document Period End Date" } } }, "localname": "DocumentPeriodEndDate", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "dateItemType" }, "dei_DocumentQuarterlyReport": { "auth_ref": [ "r480" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true only for a form used as an quarterly report.", "label": "Document Quarterly Report", "terseLabel": "Document Quarterly Report" } } }, "localname": "DocumentQuarterlyReport", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_DocumentTransitionReport": { "auth_ref": [ "r481" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true only for a form used as a transition report.", "label": "Document Transition Report", "terseLabel": "Document Transition Report" } } }, "localname": "DocumentTransitionReport", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_DocumentType": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.", "label": "Document Type", "terseLabel": "Document Type" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityAddressAddressLine1": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Address Line 1 such as Attn, Building Name, Street Name", "label": "Entity Address, Address Line One", "terseLabel": "Entity Address Line1" } } }, "localname": "EntityAddressAddressLine1", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressCityOrTown": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Name of the City or Town", "label": "Entity Address, City or Town", "terseLabel": "Entity Address City Or Town" } } }, "localname": "EntityAddressCityOrTown", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressPostalZipCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Code for the postal or zip code", "label": "Entity Address, Postal Zip Code", "terseLabel": "Entity Address Postal Zip Code" } } }, "localname": "EntityAddressPostalZipCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressStateOrProvince": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Name of the state or province.", "label": "Entity Address, State or Province", "terseLabel": "Entity Address State Or Province" } } }, "localname": "EntityAddressStateOrProvince", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "stateOrProvinceItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r478" ], "lang": { "en-us": { "role": { "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.", "label": "Entity Central Index Key", "terseLabel": "Entity Central Index Key" } } }, "localname": "EntityCentralIndexKey", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "centralIndexKeyItemType" }, "dei_EntityCommonStockSharesOutstanding": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.", "label": "Entity Common Stock, Shares Outstanding", "terseLabel": "Entity Common Stock, Shares Outstanding" } } }, "localname": "EntityCommonStockSharesOutstanding", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "sharesItemType" }, "dei_EntityCurrentReportingStatus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Current Reporting Status", "terseLabel": "Entity Current Reporting Status" } } }, "localname": "EntityCurrentReportingStatus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "yesNoItemType" }, "dei_EntityDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.", "label": "Entity [Domain]", "terseLabel": "Entity [Domain]" } } }, "localname": "EntityDomain", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "dei_EntityEmergingGrowthCompany": { "auth_ref": [ "r478" ], "lang": { "en-us": { "role": { "documentation": "Indicate if registrant meets the emerging growth company criteria.", "label": "Entity Emerging Growth Company", "terseLabel": "Entity Emerging Growth Company" } } }, "localname": "EntityEmergingGrowthCompany", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_EntityExTransitionPeriod": { "auth_ref": [ "r490" ], "lang": { "en-us": { "role": { "documentation": "Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards.", "label": "Entity Ex Transition Period", "terseLabel": "Entity Ex Transition Period" } } }, "localname": "EntityExTransitionPeriod", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_EntityFileNumber": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.", "label": "Entity File Number", "terseLabel": "Entity File Number" } } }, "localname": "EntityFileNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "fileNumberItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r478" ], "lang": { "en-us": { "role": { "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Filer Category", "terseLabel": "Entity Filer Category" } } }, "localname": "EntityFilerCategory", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "filerCategoryItemType" }, "dei_EntityIncorporationStateCountryCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Two-character EDGAR code representing the state or country of incorporation.", "label": "Entity Incorporation, State or Country Code", "terseLabel": "Entity Incorporation State Country Code" } } }, "localname": "EntityIncorporationStateCountryCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "edgarStateCountryItemType" }, "dei_EntityInteractiveDataCurrent": { "auth_ref": [ "r489" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).", "label": "Entity Interactive Data Current", "terseLabel": "Entity Interactive Data Current" } } }, "localname": "EntityInteractiveDataCurrent", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "yesNoItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r478" ], "lang": { "en-us": { "role": { "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.", "label": "Entity Registrant Name", "terseLabel": "Entity Registrant Name" } } }, "localname": "EntityRegistrantName", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityShellCompany": { "auth_ref": [ "r478" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.", "label": "Entity Shell Company", "terseLabel": "Entity Shell Company" } } }, "localname": "EntityShellCompany", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_EntitySmallBusiness": { "auth_ref": [ "r478" ], "lang": { "en-us": { "role": { "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).", "label": "Entity Small Business", "terseLabel": "Entity Small Business" } } }, "localname": "EntitySmallBusiness", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "booleanItemType" }, "dei_EntityTaxIdentificationNumber": { "auth_ref": [ "r478" ], "lang": { "en-us": { "role": { "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.", "label": "Entity Tax Identification Number", "terseLabel": "Entity Tax Identification Number" } } }, "localname": "EntityTaxIdentificationNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "employerIdItemType" }, "dei_LegalEntityAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The set of legal entities associated with a report.", "label": "Legal Entity [Axis]", "terseLabel": "Legal Entity [Axis]" } } }, "localname": "LegalEntityAxis", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "dei_LocalPhoneNumber": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Local phone number for entity.", "label": "Local Phone Number", "terseLabel": "Local Phone Number" } } }, "localname": "LocalPhoneNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "normalizedStringItemType" }, "dei_Security12bTitle": { "auth_ref": [ "r477" ], "lang": { "en-us": { "role": { "documentation": "Title of a 12(b) registered security.", "label": "Title of 12(b) Security", "terseLabel": "Security12b Title" } } }, "localname": "Security12bTitle", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "securityTitleItemType" }, "dei_SecurityExchangeName": { "auth_ref": [ "r479" ], "lang": { "en-us": { "role": { "documentation": "Name of the Exchange on which a security is registered.", "label": "Security Exchange Name", "terseLabel": "Security Exchange Name" } } }, "localname": "SecurityExchangeName", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "edgarExchangeCodeItemType" }, "dei_TradingSymbol": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Trading symbol of an instrument as listed on an exchange.", "label": "Trading Symbol", "terseLabel": "Trading Symbol" } } }, "localname": "TradingSymbol", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://lyell.com/role/Cover" ], "xbrltype": "tradingSymbolItemType" }, "lyel_AssetsAndLiabilitiesLesseeTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Assets And Liabilities, Lessee", "label": "Assets And Liabilities, Lessee [Table Text Block]", "terseLabel": "Schedule of Lease Assets and Liabilities" } } }, "localname": "AssetsAndLiabilitiesLesseeTableTextBlock", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LeasesTables" ], "xbrltype": "textBlockItemType" }, "lyel_CashEquivalentsAndDebtSecuritiesAvailableForSaleAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Cash Equivalents And Debt Securities, Available-For-Sale", "label": "Cash Equivalents And Debt Securities, Available-For-Sale [Abstract]", "terseLabel": "Classified as:" } } }, "localname": "CashEquivalentsAndDebtSecuritiesAvailableForSaleAbstract", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "stringItemType" }, "lyel_CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost": { "auth_ref": [], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails_1": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash Equivalents, At Carry Value And Debt Securities, Available-For-Sale, Amortized Cost", "label": "Cash Equivalents, At Carry Value And Debt Securities, Available-For-Sale, Amortized Cost", "totalLabel": "Amortized Cost" } } }, "localname": "CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CashEquivalentsFairValueDisclosure": { "auth_ref": [], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 2.0, "parentTag": "lyel_CashEquivalentsFairValueDisclosureAndDebtSecuritiesAvailableForSale", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash Equivalents, Fair Value Disclosure", "label": "Cash Equivalents, Fair Value Disclosure", "terseLabel": "Cash equivalents" } } }, "localname": "CashEquivalentsFairValueDisclosure", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CashEquivalentsFairValueDisclosureAndDebtSecuritiesAvailableForSale": { "auth_ref": [], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 1.0, "parentTag": "lyel_CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost", "weight": 1.0 }, "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails_1": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash Equivalents, Fair Value Disclosure And Debt Securities, Available-For-Sale", "label": "Cash Equivalents, Fair Value Disclosure And Debt Securities, Available-For-Sale", "terseLabel": "Fair Value", "totalLabel": "Total cash equivalents and marketable securities" } } }, "localname": "CashEquivalentsFairValueDisclosureAndDebtSecuritiesAvailableForSale", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilities": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Cash paid for amounts included in the measurement of lease liabilities.", "label": "Cash Paid For Amounts Included In Measurement Of Lease Liabilities", "terseLabel": "Cash paid for amounts included in the measurement of lease liabilities" } } }, "localname": "CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilities", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "lyel_CashReceivedForAmountsRelatedToTenantImprovementAllowances": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash received for amounts related to tenant improvement allowances.", "label": "Cash Received For Amounts Related To Tenant Improvement Allowances", "terseLabel": "Cash received for amounts related to tenant improvement allowances" } } }, "localname": "CashReceivedForAmountsRelatedToTenantImprovementAllowances", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsAggregatePotentialSuccessPayments": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Aggregate Potential Success Payments", "label": "Collaborative Arrangement, Rights And Obligations, Aggregate Potential Success Payments", "terseLabel": "Aggregate success payment(s) (in millions)" } } }, "localname": "CollaborativeArrangementRightsAndObligationsAggregatePotentialSuccessPayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsAggregatePotentialSuccessPaymentsSharePrice": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Aggregate Potential Success Payments, Share Price", "label": "Collaborative Arrangement, Rights And Obligations, Aggregate Potential Success Payments, Share Price", "terseLabel": "Per share common stock price required for payment (in dollars per share)" } } }, "localname": "CollaborativeArrangementRightsAndObligationsAggregatePotentialSuccessPaymentsSharePrice", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "perShareItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsAnnualLicenseMaintenancePayments": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Annual License Maintenance Payments", "label": "Collaborative Arrangement, Rights And Obligations, Annual License Maintenance Payments", "terseLabel": "Annual license maintenance payments" } } }, "localname": "CollaborativeArrangementRightsAndObligationsAnnualLicenseMaintenancePayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsCommercialMilestonePayments": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Commercial Milestone Payments", "label": "Collaborative Arrangement, Rights And Obligations, Commercial Milestone Payments", "terseLabel": "Potential milestone payments due" } } }, "localname": "CollaborativeArrangementRightsAndObligationsCommercialMilestonePayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsMaintenanceFees": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Maintenance Fees", "label": "Collaborative Arrangement, Rights And Obligations, Maintenance Fees", "terseLabel": "Maintenance fees" } } }, "localname": "CollaborativeArrangementRightsAndObligationsMaintenanceFees", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsMaximumAggregateCommercialMilestonePayments": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Commercial Milestone Payments", "label": "Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Commercial Milestone Payments", "terseLabel": "Maximum aggregate commercial milestone payments" } } }, "localname": "CollaborativeArrangementRightsAndObligationsMaximumAggregateCommercialMilestonePayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsMaximumAggregatePrespecifiedDevelopmentMilestonePayments": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Maximum Aggregate Prespecified Development Milestone Payments", "label": "Collaborative Arrangement, Rights And Obligations, Maximum Aggregate Prespecified Development Milestone Payments", "terseLabel": "Maximum aggregate development milestone payments" } } }, "localname": "CollaborativeArrangementRightsAndObligationsMaximumAggregatePrespecifiedDevelopmentMilestonePayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsMilestonePayments": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Milestone Payments", "label": "Collaborative Arrangement, Rights And Obligations, Milestone Payments", "terseLabel": "Potential milestone payments due" } } }, "localname": "CollaborativeArrangementRightsAndObligationsMilestonePayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsPotentialPaymentMultiplier": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Potential Payment Multiplier", "label": "Collaborative Arrangement, Rights And Obligations, Potential Payment Multiplier", "terseLabel": "Multiple of initial equity value at issuance" } } }, "localname": "CollaborativeArrangementRightsAndObligationsPotentialPaymentMultiplier", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "pureItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsResearchPayments": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Research Payments", "label": "Collaborative Arrangement, Rights And Obligations, Research Payments", "terseLabel": "Aggregate research payments due" } } }, "localname": "CollaborativeArrangementRightsAndObligationsResearchPayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsResearchTerm": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Research Term", "label": "Collaborative Arrangement, Rights And Obligations, Research Term", "terseLabel": "Term of collaborative arrangement for research" } } }, "localname": "CollaborativeArrangementRightsAndObligationsResearchTerm", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementAdditionalPurchasePrice": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights and Obligations, Stock Purchase Agreement, Additional Purchase Price", "label": "Collaborative Arrangement, Rights and Obligations, Stock Purchase Agreement, Additional Purchase Price", "terseLabel": "Additional purchase price consideration" } } }, "localname": "CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementAdditionalPurchasePrice", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementFairValuePerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights and Obligations, Stock Purchase Agreement, Fair Value Per Share", "label": "Collaborative Arrangement, Rights and Obligations, Stock Purchase Agreement, Fair Value Per Share", "terseLabel": "Stock purchase agreement, fair value per share (in dollars per share)" } } }, "localname": "CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementFairValuePerShare", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementPurchasePricePerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Stock Purchase Agreement, Purchase Price Per Share", "label": "Collaborative Arrangement, Rights And Obligations, Stock Purchase Agreement, Purchase Price Per Share", "terseLabel": "Stock purchase agreement, purchase price per share (in dollars per share)" } } }, "localname": "CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementPurchasePricePerShare", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementSharesPurchased": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights and Obligations, Stock Purchase Agreement, Shares Purchased", "label": "Collaborative Arrangement, Rights and Obligations, Stock Purchase Agreement, Shares Purchased", "terseLabel": "Stock purchase agreement, stock purchased (in shares)" } } }, "localname": "CollaborativeArrangementRightsAndObligationsStockPurchaseAgreementSharesPurchased", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "sharesItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementFairValueOfLiability": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Fair Value Of Liability", "label": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Fair Value Of Liability", "terseLabel": "Fair value of potential success payments due" } } }, "localname": "CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementFairValueOfLiability", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementLiability": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Liability", "label": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Liability", "terseLabel": "Success payment liability" } } }, "localname": "CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementLiability", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementTerm": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Term", "label": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Term", "terseLabel": "Term of success payment agreement" } } }, "localname": "CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementTerm", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementTriggerPeriodAfterInitialPublicOffering": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Trigger Period Thereafter", "label": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Trigger Period After Initial Public Offering", "terseLabel": "Trigger period thereafter" } } }, "localname": "CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementTriggerPeriodAfterInitialPublicOffering", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementTriggerPeriodFromInitialPublicOfferingDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Trigger Period From Initial Public Offering Date", "label": "Collaborative Arrangement, Rights And Obligations, Success Payment Agreement, Trigger Period From Initial Public Offering Date", "terseLabel": "Trigger period from IPO date" } } }, "localname": "CollaborativeArrangementRightsAndObligationsSuccessPaymentAgreementTriggerPeriodFromInitialPublicOfferingDate", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "durationItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsSuccessPaymentExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights And Obligations, Success Payment Expense", "label": "Collaborative Arrangement, Rights And Obligations, Success Payment Expense", "terseLabel": "Success payment expenses" } } }, "localname": "CollaborativeArrangementRightsAndObligationsSuccessPaymentExpense", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_CollaborativeArrangementRightsAndObligationsUpfrontPayment": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Collaborative Arrangement, Rights and Obligations, Upfront Payment", "label": "Collaborative Arrangement, Rights and Obligations, Upfront Payment", "terseLabel": "Total upfront payment paid" } } }, "localname": "CollaborativeArrangementRightsAndObligationsUpfrontPayment", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_ContractWithCustomerNumberOfAdditionalCollaborationTargets": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contract With Customer, Number Of Additional Collaboration Targets", "label": "Contract With Customer, Number Of Additional Collaboration Targets", "terseLabel": "Number of additional collaboration targets" } } }, "localname": "ContractWithCustomerNumberOfAdditionalCollaborationTargets", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "lyel_ContractWithCustomerNumberOfInitialCollaborationTargets": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contract With Customer, Number Of Initial Collaboration Targets", "label": "Contract With Customer, Number Of Initial Collaboration Targets", "terseLabel": "Number of initial collaboration targets" } } }, "localname": "ContractWithCustomerNumberOfInitialCollaborationTargets", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "lyel_ContractWithCustomerNumberOfRepresentativesOfJointSteeringCommitteeAppointedByCompany": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Contract With Customer, Number Of Representatives Of Joint Steering Committee Appointed By Company", "label": "Contract With Customer, Number Of Representatives Of Joint Steering Committee Appointed By Company", "terseLabel": "Number of representatives of JSC appointed by company" } } }, "localname": "ContractWithCustomerNumberOfRepresentativesOfJointSteeringCommitteeAppointedByCompany", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "lyel_DeferredOfferingCostsIncurredButNotYetPaid": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Deferred Offering Costs Incurred But Not Yet Paid", "label": "Deferred Offering Costs Incurred But Not Yet Paid", "terseLabel": "Deferred offering costs included in accounts payable and accrued liabilities" } } }, "localname": "DeferredOfferingCostsIncurredButNotYetPaid", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "lyel_DescriptionOfOrganizationLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Description of organization line Items", "label": "Description Of Organization [Line Items]", "terseLabel": "Description of Organization [Line Items]" } } }, "localname": "DescriptionOfOrganizationLineItems", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "stringItemType" }, "lyel_DescriptionOfOrganizationTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Description of organization table", "label": "Description Of Organization [Table]", "terseLabel": "Description of Organization [Table]" } } }, "localname": "DescriptionOfOrganizationTable", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "stringItemType" }, "lyel_EquityMultipleAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Equity Multiple Axis.", "label": "Equity Multiple [Axis]", "terseLabel": "Equity Multiple [Axis]" } } }, "localname": "EquityMultipleAxis", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "stringItemType" }, "lyel_EquityMultipleDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Equity Multiple Domain.", "label": "Equity Multiple [Domain]", "terseLabel": "Equity Multiple [Domain]" } } }, "localname": "EquityMultipleDomain", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_EquityWarrantInvestmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Equity warrant investment.", "label": "Equity Warrant Investment [Member]", "terseLabel": "Equity Warrant Investment" } } }, "localname": "EquityWarrantInvestmentMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "lyel_FairValueAdjustmentOfSuccessPaymentLiabilities": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value adjustment of success payment liabilities", "label": "Fair Value Adjustment Of Success Payment Liabilities", "terseLabel": "Change in fair value of success payment liabilities" } } }, "localname": "FairValueAdjustmentOfSuccessPaymentLiabilities", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "lyel_FairValueOfSeriesAConvertiblePreferredStock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fair value of the Series A convertible preferred stock.", "label": "Fair Value Of Series A Convertible Preferred Stock", "terseLabel": "Fair value of common stock Series A convertible preferred stock" } } }, "localname": "FairValueOfSeriesAConvertiblePreferredStock", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "perShareItemType" }, "lyel_FiftyTimesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fifty Times (50x).", "label": "Fifty Times [Member]", "terseLabel": "Fifty Times" } } }, "localname": "FiftyTimesMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_FortyTimesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Forty Times (40x).", "label": "Forty Times [Member]", "terseLabel": "Forty Times" } } }, "localname": "FortyTimesMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_FredHutchMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fred Hutch", "label": "Fred Hutch [Member]", "terseLabel": "Fred Hutch" } } }, "localname": "FredHutchMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_FredHutchSuccessPaymentLiabilityMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fred Hutch Success Payment Liability", "label": "Fred Hutch Success Payment Liability [Member]", "terseLabel": "Fred Hutch" } } }, "localname": "FredHutchSuccessPaymentLiabilityMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "domainItemType" }, "lyel_GSKAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "GSK Agreement", "label": "GSK Agreement [Member]", "terseLabel": "GSK Agreement" } } }, "localname": "GSKAgreementMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "lyel_GlaxoSmithKlineIntellectualPropertyNo5LimitedAndGlaxoGroupLimitedMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "GlaxoSmithKline Intellectual Property (No. 5) Limited And Glaxo Group Limited", "label": "GlaxoSmithKline Intellectual Property (No. 5) Limited And Glaxo Group Limited [Member]", "terseLabel": "GSK" } } }, "localname": "GlaxoSmithKlineIntellectualPropertyNo5LimitedAndGlaxoGroupLimitedMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "lyel_LesseeOperatingLeaseLiabilityTenantImprovementAllowance": { "auth_ref": [], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails": { "order": 2.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Lessee, Operating Lease, Liability, Tenant Improvement Allowance", "label": "Lessee, Operating Lease, Liability, Tenant Improvement Allowance", "negatedTerseLabel": "Less: tenant improvement allowances" } } }, "localname": "LesseeOperatingLeaseLiabilityTenantImprovementAllowance", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "lyel_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour": { "auth_ref": [], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails_1": { "order": 6.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Lessee, Operating Lease, Liability, To Be Paid, After Year Four", "label": "Lessee, Operating Lease, Liability, To Be Paid, After Year Four", "terseLabel": "Thereafter" } } }, "localname": "LesseeOperatingLeaseLiabilityToBePaidAfterYearFour", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "lyel_LyellImmunopharmaMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Lyell Immunopharma", "label": "Lyell Immunopharma [Member]", "terseLabel": "Lyell Immunopharma" } } }, "localname": "LyellImmunopharmaMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "lyel_MonthlyFixedRentalPaymentProceeds": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Monthly fixed rental payment proceeds.", "label": "Monthly Fixed Rental Payment Proceeds", "terseLabel": "Monthly fixed rental payment proceeds" } } }, "localname": "MonthlyFixedRentalPaymentProceeds", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_NationalCancerInstituteMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "National Cancer Institute", "label": "National Cancer Institute [Member]", "terseLabel": "NCI" } } }, "localname": "NationalCancerInstituteMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "lyel_NonCashLeaseIncomeExpense": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 12.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Non-Cash Lease Income (Expense)", "label": "Non-Cash Lease Income (Expense)", "negatedTerseLabel": "Non-cash lease (income) expense" } } }, "localname": "NonCashLeaseIncomeExpense", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "lyel_OtherInvestmentMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Other Investment.", "label": "Other Investment [Member]", "terseLabel": "Other Investment" } } }, "localname": "OtherInvestmentMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "lyel_OtherInvestmentsTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for other investments.", "label": "Other Investments [Text Block]", "terseLabel": "Other Investments" } } }, "localname": "OtherInvestmentsTextBlock", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/OtherInvestments" ], "xbrltype": "textBlockItemType" }, "lyel_OutpaceBioIncMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Outpace Bio Inc [Member]", "label": "Outpace Bio Inc Member", "terseLabel": "Outpace Bio Inc" } } }, "localname": "OutpaceBioIncMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "domainItemType" }, "lyel_PACTPharmaIncMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "PACT Pharma, Inc.", "label": "PACT Pharma, Inc. [Member]", "terseLabel": "PACT" } } }, "localname": "PACTPharmaIncMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "domainItemType" }, "lyel_PaymentsOfUnderwritingDiscountsAndCommissions": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Payments of underwriting Discounts and commissions", "label": "Payments Of Underwriting Discounts And Commissions", "terseLabel": "Payments of underwriting discounts and commissions" } } }, "localname": "PaymentsOfUnderwritingDiscountsAndCommissions", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "monetaryItemType" }, "lyel_PaymentsOfUpfrontPaymentsForResearchAndDevelopmentAgreement": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Payments Of Upfront Payments For Research And Development Agreement", "label": "Payments Of Upfront Payments For Research And Development Agreement", "terseLabel": "Upfront payment" } } }, "localname": "PaymentsOfUpfrontPaymentsForResearchAndDevelopmentAgreement", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_RemeasurementOfOperatingLeaseRightOfUseAssetForLeaseModification": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Remeasurement of operating lease right of use asset for lease modification.", "label": "Remeasurement Of Operating Lease Right Of Use Asset For Lease Modification", "terseLabel": "Remeasurement of operating lease right-of-use asset for lease modification" } } }, "localname": "RemeasurementOfOperatingLeaseRightOfUseAssetForLeaseModification", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "lyel_RepresentedByCashAndCashEquivalentsAndRestrictedCashAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Represented by Cash and Cash Equivalents and Restricted Cash.", "label": "Represented By Cash And Cash Equivalents And Restricted Cash [Abstract]", "terseLabel": "Represented by:" } } }, "localname": "RepresentedByCashAndCashEquivalentsAndRestrictedCashAbstract", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "lyel_RevenuePerformanceObligationNumberOfPerformanceObligations": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Revenue, Performance Obligation, Number Of Performance Obligations", "label": "Revenue, Performance Obligation, Number Of Performance Obligations", "terseLabel": "Number of performance obligations" } } }, "localname": "RevenuePerformanceObligationNumberOfPerformanceObligations", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "lyel_RevenueRemainingPerformanceObligationAmountStockPurchaseProgram": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenue, Remaining Performance Obligation, Amount, Stock Purchase Program", "label": "Revenue, Remaining Performance Obligation, Amount, Stock Purchase Program", "terseLabel": "Stock Purchase Agreement portion of transaction price" } } }, "localname": "RevenueRemainingPerformanceObligationAmountStockPurchaseProgram", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_RevenueRemainingPerformanceObligationVariableConsiderationAmount": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenue, Remaining Performance Obligation, Variable Consideration Amount", "label": "Revenue, Remaining Performance Obligation, Variable Consideration Amount", "terseLabel": "Variable consideration amount" } } }, "localname": "RevenueRemainingPerformanceObligationVariableConsiderationAmount", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_RevenueRemainingPerformanceObligationVariableConsiderationAmountNotWithinPipeline": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Not Within Pipeline", "label": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Not Within Pipeline", "terseLabel": "Potential milestone payments, not within pipeline" } } }, "localname": "RevenueRemainingPerformanceObligationVariableConsiderationAmountNotWithinPipeline", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_RevenueRemainingPerformanceObligationVariableConsiderationAmountNumberOfOneTimePayments": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Number Of One-Time Payments", "label": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Number Of One-Time Payments", "terseLabel": "Revenue, remaining performance obligation, variable consideration amount, number of one-time payments" } } }, "localname": "RevenueRemainingPerformanceObligationVariableConsiderationAmountNumberOfOneTimePayments", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "integerItemType" }, "lyel_RevenueRemainingPerformanceObligationVariableConsiderationAmountTechnologyValidation": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Technology Validation", "label": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Technology Validation", "terseLabel": "Potential milestone payments, technology validation" } } }, "localname": "RevenueRemainingPerformanceObligationVariableConsiderationAmountTechnologyValidation", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_RevenueRemainingPerformanceObligationVariableConsiderationAmountWithinPipeline": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Within Pipeline", "label": "Revenue, Remaining Performance Obligation, Variable Consideration Amount, Within Pipeline", "terseLabel": "Potential milestone payments, within pipeline" } } }, "localname": "RevenueRemainingPerformanceObligationVariableConsiderationAmountWithinPipeline", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "lyel_SeriesAAConvertiblePreferredStockMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series AA Convertible Preferred Stock", "label": "Series A A Convertible Preferred Stock [Member]", "terseLabel": "Series AA Convertible Preferred Stock" } } }, "localname": "SeriesAAConvertiblePreferredStockMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "lyel_SeriesAConvertiblePreferredStockMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Series A Convertible Preferred Stock", "label": "Series A Convertible Preferred Stock [Member]", "terseLabel": "Series A Convertible Preferred Stock" } } }, "localname": "SeriesAConvertiblePreferredStockMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "lyel_ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalSharesAuthorizedNumberOfSharesAsPercentageOfCommonSharesOutstanding": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share-Based Compensation Arrangement By Share-based Payment Award, Additional Shares Authorized, Number Of Shares As Percentage Of Common Shares Outstanding", "label": "Share-Based Compensation Arrangement By Share-based Payment Award, Additional Shares Authorized, Number Of Shares As Percentage Of Common Shares Outstanding", "terseLabel": "Increase in proportion of common shares reserved for future issuance (as a percent)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalSharesAuthorizedNumberOfSharesAsPercentageOfCommonSharesOutstanding", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "lyel_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesAvailableForGrantPercentageOfSharesOutstanding": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share-based Compensation Arrangement by Share-based Payment Award, Increase In Number Of Shares Available For Grant, Percentage Of Shares Outstanding", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Increase In Number Of Shares Available For Grant, Percentage Of Shares Outstanding", "terseLabel": "Proportion of stock outstanding (as a percent)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesAvailableForGrantPercentageOfSharesOutstanding", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "lyel_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumOfferingPeriod": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share Based Compensation Arrangement By Share Based Payment Award, Maximum Offering Period", "label": "Share Based Compensation Arrangement By Share Based Payment Award, Maximum Offering Period", "terseLabel": "Maximum offering period" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumOfferingPeriod", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "lyel_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumSharesIssuable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share-based Compensation Arrangement By Share-based Payment Award, Maximum Shares Issuable", "label": "Share-based Compensation Arrangement By Share-based Payment Award, Maximum Shares Issuable", "terseLabel": "Maximum number of shares to be purchased under ESPP (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumSharesIssuable", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "lyel_SignificantAccountingPoliciesPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Significant Accounting Policies", "label": "Significant Accounting Policies [Policy Text Block]", "terseLabel": "Significant Accounting Policies" } } }, "localname": "SignificantAccountingPoliciesPolicyTextBlock", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "lyel_StanfordMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Stanford.", "label": "Stanford [Member]", "terseLabel": "Stanford" } } }, "localname": "StanfordMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_StanfordSuccessPaymentLiabilityMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Stanford Success Payment Liability", "label": "Stanford Success Payment Liability [Member]", "terseLabel": "Stanford" } } }, "localname": "StanfordSuccessPaymentLiabilityMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "domainItemType" }, "lyel_StockPurchaseAgreementFairValueOfStockPerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Stock Purchase Agreement, Fair Value Of Stock Per Share", "label": "Stock Purchase Agreement, Fair Value Of Stock Per Share", "terseLabel": "Fair value per share of stock sold under Stock Purchase Program (in dollars per share)" } } }, "localname": "StockPurchaseAgreementFairValueOfStockPerShare", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "lyel_StockPurchaseAgreementSharesSold": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Stock Purchase Agreement, Shares Sold", "label": "Stock Purchase Agreement, Shares Sold", "terseLabel": "Stock sold under Stock Purchase Program (in shares)" } } }, "localname": "StockPurchaseAgreementSharesSold", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "sharesItemType" }, "lyel_StockPurchaseAgreementSharesSoldPricePerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Stock Purchase Agreement, Shares Sold, Price Per Share", "label": "Stock Purchase Agreement, Shares Sold, Price Per Share", "terseLabel": "Price per share of stock sold under Stock Purchase Program (in dollars per share)" } } }, "localname": "StockPurchaseAgreementSharesSoldPricePerShare", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "lyel_SubleaseWithSonomaMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Sublease With Sonoma", "label": "Sublease With Sonoma [Member]", "terseLabel": "Sublease with Sonoma" } } }, "localname": "SubleaseWithSonomaMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "lyel_SuccessPaymentLiabilitiesCurrent": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Success Payment Liabilities, Current", "label": "Success Payment Liabilities, Current", "terseLabel": "Success payment liabilities" } } }, "localname": "SuccessPaymentLiabilitiesCurrent", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "lyel_SuccessPaymentLiabilitiesFairValueDisclosure": { "auth_ref": [], "calculation": { "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails": { "order": 1.0, "parentTag": "us-gaap_FinancialLiabilitiesFairValueDisclosure", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Success Payment Liabilities, Fair Value Disclosure", "label": "Success Payment Liabilities, Fair Value Disclosure", "terseLabel": "Success payment liabilities" } } }, "localname": "SuccessPaymentLiabilitiesFairValueDisclosure", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "lyel_SuccessPaymentLiabilityMeasurementInput": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Success Payment Liability, Measurement Input", "label": "Success Payment Liability, Measurement Input", "terseLabel": "Success payment liability, measurement input (as a percent)" } } }, "localname": "SuccessPaymentLiabilityMeasurementInput", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "decimalItemType" }, "lyel_SuccessPaymentLiabilityMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Success Payment Liability", "label": "Success Payment Liability [Member]", "verboseLabel": "Success Payment Liabilities" } } }, "localname": "SuccessPaymentLiabilityMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "lyel_TenTimesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Ten Times (10x).", "label": "Ten Times [Member]", "terseLabel": "Ten Times" } } }, "localname": "TenTimesMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_ThirtyTimesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Thirty Times (30x).", "label": "Thirty Times [Member]", "terseLabel": "Thirty Times" } } }, "localname": "ThirtyTimesMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_TwentyTimesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Twenty Times (20x).", "label": "Twenty Times [Member]", "terseLabel": "Twenty Times" } } }, "localname": "TwentyTimesMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "lyel_TwoThousandEighteenEquityIncentivePlanMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Two Thousand Eighteen Equity Incentive Plan", "label": "Two Thousand Eighteen Equity Incentive Plan [Member]", "terseLabel": "2018 Equity Incentive Plan" } } }, "localname": "TwoThousandEighteenEquityIncentivePlanMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "lyel_TwoThousandTwentyOneEmployeeStockPurchasePlanMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Two thousand twenty one employee stock purchase plan.", "label": "Two Thousand Twenty One Employee Stock Purchase Plan [Member]", "terseLabel": "2021 ESPP" } } }, "localname": "TwoThousandTwentyOneEmployeeStockPurchasePlanMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "lyel_TwoThousandTwentyOneEquityIncentivePlanMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Two thousand twenty one equity incentive plan.", "label": "Two Thousand Twenty One Equity Incentive Plan [Member]", "terseLabel": "2021 Plan" } } }, "localname": "TwoThousandTwentyOneEquityIncentivePlanMember", "nsuri": "http://lyell.com/20220331", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_AffiliatedEntityMember": { "auth_ref": [ "r262", "r361", "r362", "r364", "r473" ], "lang": { "en-us": { "role": { "label": "Affiliated Entity [Member]", "terseLabel": "Affiliated Entity" } } }, "localname": "AffiliatedEntityMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "srt_ConsolidatedEntitiesAxis": { "auth_ref": [ "r91", "r195", "r200", "r206", "r317", "r318", "r321", "r322", "r367", "r473" ], "lang": { "en-us": { "role": { "label": "Consolidated Entities [Axis]", "terseLabel": "Consolidated Entities [Axis]" } } }, "localname": "ConsolidatedEntitiesAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "stringItemType" }, "srt_ConsolidatedEntitiesDomain": { "auth_ref": [ "r91", "r195", "r200", "r206", "r317", "r318", "r321", "r322", "r367", "r473" ], "lang": { "en-us": { "role": { "label": "Consolidated Entities [Domain]", "terseLabel": "Consolidated Entities [Domain]" } } }, "localname": "ConsolidatedEntitiesDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "domainItemType" }, "srt_CounterpartyNameAxis": { "auth_ref": [ "r39", "r41", "r89", "r90", "r209", "r222" ], "lang": { "en-us": { "role": { "label": "Counterparty Name [Axis]", "terseLabel": "Counterparty Name [Axis]" } } }, "localname": "CounterpartyNameAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "stringItemType" }, "srt_EquityMethodInvesteeNameDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Investment, Name [Domain]", "terseLabel": "Investment, Name [Domain]" } } }, "localname": "EquityMethodInvesteeNameDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "domainItemType" }, "srt_MaximumMember": { "auth_ref": [ "r208", "r221", "r264", "r265", "r379", "r380", "r381", "r382", "r383", "r384", "r403", "r444", "r446", "r474", "r475" ], "lang": { "en-us": { "role": { "label": "Maximum [Member]", "terseLabel": "Maximum" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_MinimumMember": { "auth_ref": [ "r208", "r221", "r264", "r265", "r379", "r380", "r381", "r382", "r383", "r384", "r403", "r444", "r446", "r474", "r475" ], "lang": { "en-us": { "role": { "label": "Minimum [Member]", "terseLabel": "Minimum" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "srt_OwnershipAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Ownership [Axis]", "terseLabel": "Ownership [Axis]" } } }, "localname": "OwnershipAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "srt_OwnershipDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Ownership [Domain]", "terseLabel": "Ownership [Domain]" } } }, "localname": "OwnershipDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "srt_ProductOrServiceAxis": { "auth_ref": [ "r148", "r251", "r253", "r406", "r443", "r445" ], "lang": { "en-us": { "role": { "label": "Product and Service [Axis]", "terseLabel": "Product and Service [Axis]" } } }, "localname": "ProductOrServiceAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_ProductsAndServicesDomain": { "auth_ref": [ "r148", "r251", "r253", "r406", "r443", "r445" ], "lang": { "en-us": { "role": { "label": "Product and Service [Domain]", "terseLabel": "Product and Service [Domain]" } } }, "localname": "ProductsAndServicesDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [ "r208", "r221", "r254", "r264", "r265", "r379", "r380", "r381", "r382", "r383", "r384", "r403", "r444", "r446", "r474", "r475" ], "lang": { "en-us": { "role": { "label": "Statistical Measurement [Axis]", "terseLabel": "Statistical Measurement [Axis]" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails", "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [ "r208", "r221", "r254", "r264", "r265", "r379", "r380", "r381", "r382", "r383", "r384", "r403", "r444", "r446", "r474", "r475" ], "lang": { "en-us": { "role": { "label": "Statistical Measurement [Domain]", "terseLabel": "Statistical Measurement [Domain]" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails", "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_RepurchaseAgreementCounterpartyNameDomain": { "auth_ref": [ "r40", "r41", "r89", "r90", "r209", "r222" ], "lang": { "en-us": { "role": { "label": "Counterparty Name [Domain]", "terseLabel": "Counterparty Name [Domain]" } } }, "localname": "RepurchaseAgreementCounterpartyNameDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis": { "auth_ref": [ "r168" ], "lang": { "en-us": { "role": { "label": "Investment, Name [Axis]", "terseLabel": "Investment, Name [Axis]" } } }, "localname": "ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccountingPoliciesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Accounting Policies [Abstract]", "terseLabel": "Accounting Policies [Abstract]" } } }, "localname": "AccountingPoliciesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccountsPayableCurrent": { "auth_ref": [ "r27", "r370" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Accounts Payable, Current", "terseLabel": "Accounts payable" } } }, "localname": "AccountsPayableCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments": { "auth_ref": [ "r77" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Accretion (Amortization) of Discounts and Premiums, Investments", "negatedLabel": "Net amortization or accretion on marketable securities" } } }, "localname": "AccretionAmortizationOfDiscountsAndPremiumsInvestments", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedLiabilitiesAndOtherLiabilities": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.", "label": "Accrued Liabilities and Other Liabilities", "terseLabel": "Accrued liabilities and other current liabilities" } } }, "localname": "AccruedLiabilitiesAndOtherLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r18", "r44", "r45", "r46", "r432", "r451", "r452" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.", "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Accumulated other comprehensive loss" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r43", "r46", "r53", "r54", "r55", "r93", "r94", "r95", "r320", "r447", "r448", "r491" ], "lang": { "en-us": { "role": { "documentation": "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.", "label": "AOCI Attributable to Parent [Member]", "terseLabel": "Accumulated Other Comprehensive Income (Loss)" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "domainItemType" }, "us-gaap_AdditionalPaidInCapital": { "auth_ref": [ "r16", "r304", "r370" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock.", "label": "Additional Paid in Capital", "terseLabel": "Additional paid-in capital" } } }, "localname": "AdditionalPaidInCapital", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapitalMember": { "auth_ref": [ "r93", "r94", "r95", "r301", "r302", "r303", "r325" ], "lang": { "en-us": { "role": { "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.", "label": "Additional Paid-in Capital [Member]", "terseLabel": "Additional Paid-in Capital" } } }, "localname": "AdditionalPaidInCapitalMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": { "auth_ref": [ "r266", "r268", "r307", "r308" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.", "label": "APIC, Share-based Payment Arrangement, Increase for Cost Recognition", "terseLabel": "Stock-based compensation" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Adjustments to reconcile net loss to net cash used in operating activities:" } } }, "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_AllocatedShareBasedCompensationExpense": { "auth_ref": [ "r268", "r297", "r306" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.", "label": "Share-based Payment Arrangement, Expense", "terseLabel": "Total stock-based compensation expense" } } }, "localname": "AllocatedShareBasedCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": { "auth_ref": [ "r115" ], "lang": { "en-us": { "role": { "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.", "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount", "terseLabel": "Anti-dilutive securities excluded from computation of dilutive net loss per share (in shares)" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis": { "auth_ref": [ "r115" ], "lang": { "en-us": { "role": { "documentation": "Information by type of antidilutive security.", "label": "Antidilutive Securities [Axis]", "terseLabel": "Antidilutive Securities [Axis]" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]", "terseLabel": "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesNameDomain": { "auth_ref": [ "r115" ], "lang": { "en-us": { "role": { "documentation": "Incremental common shares attributable to securities that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.", "label": "Antidilutive Securities, Name [Domain]", "terseLabel": "Antidilutive Securities, Name [Domain]" } } }, "localname": "AntidilutiveSecuritiesNameDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ArrangementsAndNonarrangementTransactionsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Domain]", "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative [Domain]" } } }, "localname": "ArrangementsAndNonarrangementTransactionsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Assets": { "auth_ref": [ "r86", "r137", "r140", "r146", "r169", "r195", "r196", "r197", "r199", "r200", "r201", "r202", "r203", "r204", "r206", "r207", "r317", "r321", "r338", "r368", "r370", "r419", "r431" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets", "totalLabel": "Total assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets [Abstract]", "terseLabel": "ASSETS" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsCurrent": { "auth_ref": [ "r6", "r7", "r38", "r86", "r169", "r195", "r196", "r197", "r199", "r200", "r201", "r202", "r203", "r204", "r206", "r207", "r317", "r321", "r338", "r368", "r370" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Current", "totalLabel": "Total current assets" } } }, "localname": "AssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets, Current [Abstract]", "terseLabel": "Current assets:" } } }, "localname": "AssetsCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueDisclosure": { "auth_ref": [ "r328" ], "calculation": { "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Fair Value Disclosure", "totalLabel": "Total financial assets" } } }, "localname": "AssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsFairValueDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets, Fair Value Disclosure [Abstract]", "terseLabel": "Financial assets:" } } }, "localname": "AssetsFairValueDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [ "r158" ], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 2.0, "parentTag": "lyel_CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax", "terseLabel": "Gross Unrealized Gains" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [ "r159" ], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 3.0, "parentTag": "lyel_CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax", "negatedLabel": "Gross Unrealized Losses" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis": { "auth_ref": [ "r156", "r177" ], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails_1": { "order": 1.0, "parentTag": "lyel_CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Amortized Cost", "totalLabel": "Amortized Cost" } } }, "localname": "AvailableForSaleDebtSecuritiesAmortizedCostBasis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtSecurities": { "auth_ref": [ "r153", "r157", "r177", "r421" ], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 3.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 }, "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails_1": { "order": 1.0, "parentTag": "lyel_CashEquivalentsFairValueDisclosureAndDebtSecuritiesAvailableForSale", "weight": 1.0 }, "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails": { "order": 1.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale", "terseLabel": "Fair Value", "verboseLabel": "Marketable securities" } } }, "localname": "AvailableForSaleSecuritiesDebtSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AwardTypeAxis": { "auth_ref": [ "r269", "r299" ], "lang": { "en-us": { "role": { "documentation": "Information by type of award under share-based payment arrangement.", "label": "Award Type [Axis]", "terseLabel": "Award Type [Axis]" } } }, "localname": "AwardTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BasisOfAccountingPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).", "label": "Basis of Accounting, Policy [Policy Text Block]", "terseLabel": "Basis of Presentation" } } }, "localname": "BasisOfAccountingPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CapitalExpendituresIncurredButNotYetPaid": { "auth_ref": [ "r79", "r80", "r81" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Future cash outflow to pay for purchases of fixed assets that have occurred.", "label": "Capital Expenditures Incurred but Not yet Paid", "terseLabel": "Purchases of property and equipment included in accounts payable and accrued liabilities" } } }, "localname": "CapitalExpendituresIncurredButNotYetPaid", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CapitalizedContractCostNet": { "auth_ref": [ "r184" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.", "label": "Capitalized Contract Cost, Net", "terseLabel": "Capitalized contract costs" } } }, "localname": "CapitalizedContractCostNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Cash and Cash Equivalents [Abstract]" } } }, "localname": "CashAndCashEquivalentsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_CashAndCashEquivalentsAtCarryingValue": { "auth_ref": [ "r4", "r24", "r78" ], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails_1": { "order": 2.0, "parentTag": "lyel_CashEquivalentsAtCarryValueAndDebtSecuritiesAvailableForSaleAmortizedCost", "weight": 1.0 }, "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 }, "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.", "label": "Cash and Cash Equivalents, at Carrying Value", "terseLabel": "Cash and cash equivalents", "totalLabel": "Amortized Cost" } } }, "localname": "CashAndCashEquivalentsAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/CondensedConsolidatedBalanceSheets", "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by type of cash and cash equivalent balance.", "label": "Cash and Cash Equivalents [Axis]", "terseLabel": "Cash and Cash Equivalents [Axis]" } } }, "localname": "CashAndCashEquivalentsAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CashAndCashEquivalentsFairValueDisclosure": { "auth_ref": [], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 1.0, "parentTag": "us-gaap_CashAndCashEquivalentsAtCarryingValue", "weight": 1.0 }, "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails_1": { "order": 2.0, "parentTag": "lyel_CashEquivalentsFairValueDisclosureAndDebtSecuritiesAvailableForSale", "weight": 1.0 }, "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails": { "order": 2.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash and Cash Equivalents, Fair Value Disclosure", "terseLabel": "Fair Value", "verboseLabel": "Money market funds" } } }, "localname": "CashAndCashEquivalentsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsAndMarketableSecuritiesTextBlock": { "auth_ref": [ "r164" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure of cash, cash equivalents, and debt and equity securities, including any unrealized or realized gain (loss).", "label": "Cash, Cash Equivalents, and Marketable Securities [Text Block]", "terseLabel": "Cash Equivalents and Marketable Securities" } } }, "localname": "CashCashEquivalentsAndMarketableSecuritiesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecurities" ], "xbrltype": "textBlockItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": { "auth_ref": [ "r73", "r78", "r82" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents", "periodEndLabel": "Cash, cash equivalents and restricted cash at end of period", "periodStartLabel": "Cash, cash equivalents and restricted cash at beginning of period", "totalLabel": "Total" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": { "auth_ref": [ "r73", "r339" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect", "totalLabel": "Net (decrease) increase in cash, cash equivalents and restricted cash" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ClassOfStockDomain": { "auth_ref": [ "r84", "r86", "r108", "r109", "r110", "r112", "r114", "r122", "r123", "r124", "r169", "r195", "r200", "r201", "r202", "r206", "r207", "r219", "r220", "r224", "r228", "r338", "r482" ], "lang": { "en-us": { "role": { "documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.", "label": "Class of Stock [Domain]", "terseLabel": "Class of Stock [Domain]" } } }, "localname": "ClassOfStockDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ClassOfStockLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Class of Stock [Line Items]", "terseLabel": "Class of Stock [Line Items]" } } }, "localname": "ClassOfStockLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CollaborativeArrangementDisclosureTextBlock": { "auth_ref": [ "r313", "r314", "r316" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for collaborative arrangements in which the entity is a participant, including a) information about the nature and purpose of such arrangements; b) its rights and obligations thereunder; c) the accounting policy for collaborative arrangements; and d) the income statement classification and amounts attributable to transactions arising from the collaborative arrangement between participants.", "label": "Collaborative Arrangement Disclosure [Text Block]", "terseLabel": "License, Collaboration, and Success Payment Agreements" } } }, "localname": "CollaborativeArrangementDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreements" ], "xbrltype": "textBlockItemType" }, "us-gaap_CollaborativeArrangementTransactionWithPartyToCollaborativeArrangementMember": { "auth_ref": [ "r315" ], "lang": { "en-us": { "role": { "documentation": "Collaborative arrangement transaction between parties to collaborative arrangement.", "label": "Collaborative Arrangement, Transaction with Party to Collaborative Arrangement [Member]", "terseLabel": "Collaborative Arrangement, Transaction with Party to Collaborative Arrangement" } } }, "localname": "CollaborativeArrangementTransactionWithPartyToCollaborativeArrangementMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]", "terseLabel": "Description Of Organization [Line Items]" } } }, "localname": "CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r33", "r193", "r422", "r436" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.", "label": "Commitments and Contingencies", "terseLabel": "Commitments and contingencies (Note 12)" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Commitments and Contingencies Disclosure [Abstract]", "terseLabel": "Commitments and Contingencies Disclosure [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r190", "r191", "r192", "r194", "r472" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for commitments and contingencies.", "label": "Commitments and Contingencies Disclosure [Text Block]", "terseLabel": "Commitments and Contingencies" } } }, "localname": "CommitmentsAndContingenciesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CommitmentsandContingencies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommonStockCapitalSharesReservedForFutureIssuance": { "auth_ref": [ "r35" ], "lang": { "en-us": { "role": { "documentation": "Aggregate number of common shares reserved for future issuance.", "label": "Common Stock, Capital Shares Reserved for Future Issuance", "terseLabel": "Future issuance of common shares (in shares)" } } }, "localname": "CommonStockCapitalSharesReservedForFutureIssuance", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Common stock held by shareholders with par value plus amounts in excess of par value or issuance value (in cases of no-par value stock).", "label": "Common Stock Including Additional Paid in Capital [Member]", "terseLabel": "Common Stock Including Additional Paid in Capital" } } }, "localname": "CommonStockIncludingAdditionalPaidInCapitalMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [ "r93", "r94", "r325" ], "lang": { "en-us": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]", "terseLabel": "Common Stock" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r15" ], "lang": { "en-us": { "role": { "documentation": "Face amount or stated value per share of common stock.", "label": "Common Stock, Par or Stated Value Per Share", "terseLabel": "Common stock, par value (in dollars per share)" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r15" ], "lang": { "en-us": { "role": { "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.", "label": "Common Stock, Shares Authorized", "terseLabel": "Common stock authorized (in shares)" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesIssued": { "auth_ref": [ "r15" ], "lang": { "en-us": { "role": { "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.", "label": "Common Stock, Shares, Issued", "terseLabel": "Common stock issued (in shares)" } } }, "localname": "CommonStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r15", "r236" ], "lang": { "en-us": { "role": { "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.", "label": "Common Stock, Shares, Outstanding", "periodEndLabel": "Ending balance (in shares)", "periodStartLabel": "Beginning balance (in shares)", "terseLabel": "Common stock outstanding (in shares)" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r15", "r370" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Common Stock, Value, Issued", "terseLabel": "Common stock, $0.0001 par value; 500,000 shares authorized at March\u00a031, 2022 and December\u00a031, 2021; 245,423 and 242,738 shares issued and outstanding at March\u00a031, 2022 and December\u00a031, 2021, respectively" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r49", "r51", "r52", "r60", "r425", "r441" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.", "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent", "totalLabel": "Comprehensive loss" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_ConcentrationRiskCreditRisk": { "auth_ref": [ "r127", "r430" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for credit risk.", "label": "Concentration Risk, Credit Risk, Policy [Policy Text Block]", "terseLabel": "Concentrations of Credit Risk" } } }, "localname": "ConcentrationRiskCreditRisk", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConsolidationPolicyTextBlock": { "auth_ref": [ "r83", "r319" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.", "label": "Consolidation, Policy [Policy Text Block]", "terseLabel": "Consolidations" } } }, "localname": "ConsolidationPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ContractWithCustomerAssetNet": { "auth_ref": [ "r246", "r248", "r252" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.", "label": "Contract with Customer, Asset, after Allowance for Credit Loss", "terseLabel": "Contract assets" } } }, "localname": "ContractWithCustomerAssetNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiability": { "auth_ref": [ "r246", "r247", "r252" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.", "label": "Contract with Customer, Liability", "terseLabel": "Contract liabilities" } } }, "localname": "ContractWithCustomerLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiabilityCurrent": { "auth_ref": [ "r246", "r247", "r252" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.", "label": "Contract with Customer, Liability, Current", "terseLabel": "Deferred revenue" } } }, "localname": "ContractWithCustomerLiabilityCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ContractWithCustomerLiabilityNoncurrent": { "auth_ref": [ "r246", "r247", "r252" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.", "label": "Contract with Customer, Liability, Noncurrent", "verboseLabel": "Deferred revenue, non-current" } } }, "localname": "ContractWithCustomerLiabilityNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_ConvertiblePreferredStockConvertedToOtherSecurities": { "auth_ref": [ "r237" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Value of convertible preferred stock that was converted to other securities.", "label": "Convertible Preferred Stock Converted to Other Securities", "terseLabel": "Converted preferred stock" } } }, "localname": "ConvertiblePreferredStockConvertedToOtherSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ConvertiblePreferredStockMember": { "auth_ref": [ "r219", "r220", "r224" ], "lang": { "en-us": { "role": { "documentation": "Preferred stock that may be exchanged into common shares or other types of securities at the owner's option.", "label": "Convertible Preferred Stock [Member]", "terseLabel": "Convertible preferred stock" } } }, "localname": "ConvertiblePreferredStockMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/NetLossPerShareDetails", "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion": { "auth_ref": [ "r13", "r14", "r231", "r237", "r240" ], "lang": { "en-us": { "role": { "documentation": "Number of shares issued for each share of convertible preferred stock that is converted.", "label": "Convertible Preferred Stock, Shares Issued upon Conversion", "terseLabel": "Outstanding shares of convertible preferred stock converted into shares of common stock (in shares)" } } }, "localname": "ConvertiblePreferredStockSharesIssuedUponConversion", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/ConvertiblePreferredStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CorporateDebtSecuritiesMember": { "auth_ref": [ "r255", "r263", "r453" ], "lang": { "en-us": { "role": { "documentation": "Debt securities issued by domestic or foreign corporate business, banks and other entities with a promise of repayment.", "label": "Corporate Debt Securities [Member]", "terseLabel": "Corporate debt securities" } } }, "localname": "CorporateDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months": { "auth_ref": [ "r163", "r180", "r183" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months", "terseLabel": "Fair value of securities held in a continuous unrealized loss position for less than twelve months" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock": { "auth_ref": [ "r164" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale [Table Text Block]", "terseLabel": "Schedule of Fair Value and Amortized Cost of Marketable Securities" } } }, "localname": "DebtSecuritiesAvailableForSaleTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleTerm": { "auth_ref": [ "r332" ], "lang": { "en-us": { "role": { "documentation": "Period between issuance and maturity of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Debt Securities, Available-for-sale, Term", "terseLabel": "Maturity of marketable securities" } } }, "localname": "DebtSecuritiesAvailableForSaleTerm", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition": { "auth_ref": [ "r162", "r178", "r183" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss.", "label": "Debt Securities, Available-for-sale, Unrealized Loss Position", "terseLabel": "Fair value of securities held in an unrealized loss position" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepreciationDepletionAndAmortization": { "auth_ref": [ "r76", "r136" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.", "label": "Depreciation, Depletion and Amortization", "terseLabel": "Depreciation and amortization" } } }, "localname": "DepreciationDepletionAndAmortization", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": { "auth_ref": [ "r309" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for share-based payment arrangement.", "label": "Share-based Payment Arrangement [Text Block]", "terseLabel": "Stock-based Compensation" } } }, "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensation" ], "xbrltype": "textBlockItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Share-based Payment Arrangement [Abstract]", "terseLabel": "Share-based Payment Arrangement [Abstract]" } } }, "localname": "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_DueToRelatedPartiesCurrent": { "auth_ref": [ "r27", "r87", "r198", "r200", "r201", "r205", "r206", "r207", "r362" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).", "label": "Due to Related Parties, Current", "terseLabel": "Due to related parties, current" } } }, "localname": "DueToRelatedPartiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DueToRelatedPartiesNoncurrent": { "auth_ref": [ "r31", "r87", "r198", "r200", "r201", "r205", "r206", "r207", "r362" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer.", "label": "Due to Related Parties, Noncurrent", "terseLabel": "Due to related parties, noncurrent" } } }, "localname": "DueToRelatedPartiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EarningsPerShareAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Earnings Per Share [Abstract]", "terseLabel": "Earnings Per Share [Abstract]" } } }, "localname": "EarningsPerShareAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r61", "r98", "r99", "r100", "r101", "r102", "r106", "r108", "r112", "r113", "r114", "r118", "r119", "r326", "r327", "r426", "r442" ], "lang": { "en-us": { "role": { "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.", "label": "Earnings Per Share, Basic", "terseLabel": "Net loss per common share, basic (in dollars per share)" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r61", "r98", "r99", "r100", "r101", "r102", "r108", "r112", "r113", "r114", "r118", "r119", "r326", "r327", "r426", "r442" ], "lang": { "en-us": { "role": { "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.", "label": "Earnings Per Share, Diluted", "terseLabel": "Net loss per common share, diluted (in dollars per share)" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareTextBlock": { "auth_ref": [ "r115", "r116", "r117", "r120" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for earnings per share.", "label": "Earnings Per Share [Text Block]", "terseLabel": "Net Loss Per Share" } } }, "localname": "EarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShare" ], "xbrltype": "textBlockItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]", "terseLabel": "Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]" } } }, "localname": "EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": { "auth_ref": [ "r298" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cost not yet recognized for nonvested award under share-based payment arrangement.", "label": "Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount", "terseLabel": "Total stock-based compensation cost related to unvested awards not yet recognized" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1": { "auth_ref": [ "r298" ], "lang": { "en-us": { "role": { "documentation": "Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition", "terseLabel": "Expected weighted-average period compensation cost to be recognized" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_EmployeeStockOptionMember": { "auth_ref": [ "r295" ], "lang": { "en-us": { "role": { "documentation": "Share-based payment arrangement granting right, subject to vesting and other restrictions, to purchase or sell certain number of shares at predetermined price for specified period of time.", "label": "Share-based Payment Arrangement, Option [Member]", "verboseLabel": "Options to purchase common stock" } } }, "localname": "EmployeeStockOptionMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Equity [Abstract]", "terseLabel": "Equity [Abstract]" } } }, "localname": "EquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r0", "r53", "r54", "r55", "r93", "r94", "r95", "r97", "r103", "r105", "r121", "r170", "r236", "r244", "r301", "r302", "r303", "r311", "r312", "r325", "r340", "r341", "r342", "r343", "r344", "r346", "r447", "r448", "r449", "r491" ], "lang": { "en-us": { "role": { "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.", "label": "Equity Component [Domain]", "terseLabel": "Equity Component [Domain]" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquitySecuritiesFvNi": { "auth_ref": [ "r337" ], "calculation": { "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails": { "order": 3.0, "parentTag": "us-gaap_AssetsFairValueDisclosure", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.", "label": "Equity Securities, FV-NI, Current", "terseLabel": "Equity warrant investment" } } }, "localname": "EquitySecuritiesFvNi", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount": { "auth_ref": [ "r165" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in equity security without readily determinable fair value.", "label": "Equity Securities without Readily Determinable Fair Value, Amount", "terseLabel": "Strategic equity investment" } } }, "localname": "EquitySecuritiesWithoutReadilyDeterminableFairValueAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueAdjustmentOfWarrants": { "auth_ref": [ "r76", "r215" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 13.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of expense (income) related to adjustment to fair value of warrant liability.", "label": "Fair Value Adjustment of Warrants", "terseLabel": "Change in fair value of warrants" } } }, "localname": "FairValueAdjustmentOfWarrants", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]", "terseLabel": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r328", "r329", "r330", "r336" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.", "label": "Fair Value, Recurring and Nonrecurring [Table]", "terseLabel": "Fair Value, Recurring and Nonrecurring [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock": { "auth_ref": [ "r331" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.", "label": "Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]", "terseLabel": "Summary of Estimated Fair Value of Success Payment Liability Assumptions" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]", "terseLabel": "Equity Warrant Investment" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock": { "auth_ref": [ "r333", "r336" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.", "label": "Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]", "terseLabel": "Changes in the Estimated Fair Value of Level 3 Financial Liabilities" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r210", "r213", "r214", "r255", "r256", "r257", "r258", "r259", "r260", "r261", "r263", "r329", "r376", "r377", "r378" ], "lang": { "en-us": { "role": { "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.", "label": "Fair Value Hierarchy and NAV [Axis]", "terseLabel": "Fair Value Hierarchy and NAV [Axis]" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByLiabilityClassAxis": { "auth_ref": [ "r335", "r336" ], "lang": { "en-us": { "role": { "documentation": "Information by class of liability.", "label": "Liability Class [Axis]", "terseLabel": "Liability Class [Axis]" } } }, "localname": "FairValueByLiabilityClassAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Fair Value Disclosures [Abstract]", "terseLabel": "Fair Value Disclosures [Abstract]" } } }, "localname": "FairValueDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r335" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.", "label": "Fair Value Disclosures [Text Block]", "terseLabel": "Fair Value Measurements" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurements" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r210", "r255", "r256", "r261", "r263", "r329", "r376" ], "lang": { "en-us": { "role": { "documentation": "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.", "label": "Fair Value, Inputs, Level 1 [Member]", "terseLabel": "Level 1" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r210", "r213", "r214", "r255", "r256", "r261", "r263", "r329", "r377" ], "lang": { "en-us": { "role": { "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.", "label": "Fair Value, Inputs, Level 2 [Member]", "terseLabel": "Level 2" } } }, "localname": "FairValueInputsLevel2Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r210", "r213", "r214", "r255", "r256", "r257", "r258", "r259", "r260", "r261", "r263", "r329", "r378" ], "lang": { "en-us": { "role": { "documentation": "Unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Inputs, Level 3 [Member]", "terseLabel": "Level 3" } } }, "localname": "FairValueInputsLevel3Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain": { "auth_ref": [ "r333" ], "lang": { "en-us": { "role": { "documentation": "Represents classes of liabilities measured and disclosed at fair value.", "label": "Fair Value by Liability Class [Domain]", "terseLabel": "Fair Value by Liability Class [Domain]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]", "terseLabel": "Success Payment Liabilities" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock": { "auth_ref": [ "r333", "r336" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.", "label": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]", "terseLabel": "Changes in the Estimated Fair Value of Level 3 Financial Assets" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1": { "auth_ref": [ "r334" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings", "terseLabel": "Changes in fair value" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue": { "auth_ref": [ "r333" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value", "periodEndLabel": "Balance at March\u00a031, 2022", "periodStartLabel": "Balance at December\u00a031, 2021" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings": { "auth_ref": [ "r334" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings", "terseLabel": "Change in fair value" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue": { "auth_ref": [ "r333" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value", "periodEndLabel": "Balance at March\u00a031, 2022", "periodStartLabel": "Balance at December\u00a031, 2021" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [ "r210", "r213", "r214", "r255", "r256", "r257", "r258", "r259", "r260", "r261", "r263", "r376", "r377", "r378" ], "lang": { "en-us": { "role": { "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.", "label": "Fair Value Hierarchy and NAV [Domain]", "terseLabel": "Fair Value Hierarchy and NAV [Domain]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails", "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancialInstrumentAxis": { "auth_ref": [ "r160", "r161", "r165", "r166", "r167", "r171", "r172", "r173", "r174", "r176", "r179", "r181", "r182", "r183", "r212", "r234", "r324", "r373", "r374", "r375", "r376", "r377", "r378", "r379", "r380", "r381", "r382", "r383", "r384", "r385", "r386", "r387", "r388", "r389", "r390", "r391", "r392", "r393", "r394", "r395", "r396", "r397", "r398", "r399", "r400", "r401", "r402", "r482", "r483", "r484", "r485", "r486", "r487", "r488" ], "lang": { "en-us": { "role": { "documentation": "Information by type of financial instrument.", "label": "Financial Instrument [Axis]", "terseLabel": "Financial Instrument [Axis]" } } }, "localname": "FinancialInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancialLiabilitiesFairValueDisclosure": { "auth_ref": [], "calculation": { "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.", "label": "Financial Liabilities Fair Value Disclosure", "totalLabel": "Total financial liabilities" } } }, "localname": "FinancialLiabilitiesFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnDispositionOfAssets": { "auth_ref": [ "r76", "r185", "r187" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.", "label": "Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property", "negatedLabel": "Loss on property equipment and disposals" } } }, "localname": "GainLossOnDispositionOfAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_GeneralAndAdministrativeExpense": { "auth_ref": [ "r64" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_OperatingExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.", "label": "General and Administrative Expense", "terseLabel": "General and administrative" } } }, "localname": "GeneralAndAdministrativeExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_GeneralAndAdministrativeExpenseMember": { "auth_ref": [ "r62" ], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption encompassing general and administrative expense.", "label": "General and Administrative Expense [Member]", "terseLabel": "General and administrative" } } }, "localname": "GeneralAndAdministrativeExpenseMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IPOMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "First sale of stock by a private company to the public.", "label": "IPO [Member]", "terseLabel": "IPO" } } }, "localname": "IPOMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ImpairmentOfInvestments": { "auth_ref": [ "r155" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.", "label": "Other than Temporary Impairment Losses, Investments", "terseLabel": "Impairment of other investments" } } }, "localname": "ImpairmentOfInvestments", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeStatementLocationAxis": { "auth_ref": [ "r188", "r189" ], "lang": { "en-us": { "role": { "documentation": "Information by location in the income statement.", "label": "Income Statement Location [Axis]", "terseLabel": "Income Statement Location [Axis]" } } }, "localname": "IncomeStatementLocationAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationDomain": { "auth_ref": [ "r189" ], "lang": { "en-us": { "role": { "documentation": "Location in the income statement.", "label": "Income Statement Location [Domain]", "terseLabel": "Income Statement Location [Domain]" } } }, "localname": "IncomeStatementLocationDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncreaseDecreaseInAccountsPayable": { "auth_ref": [ "r75" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.", "label": "Increase (Decrease) in Accounts Payable", "terseLabel": "Accounts payable" } } }, "localname": "IncreaseDecreaseInAccountsPayable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities": { "auth_ref": [ "r75" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 14.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in accrued expenses, and obligations classified as other.", "label": "Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities", "terseLabel": "Accrued liabilities and other current liabilities" } } }, "localname": "IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInContractWithCustomerLiability": { "auth_ref": [ "r75", "r404" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable.", "label": "Increase (Decrease) in Contract with Customer, Liability", "terseLabel": "Deferred revenue" } } }, "localname": "IncreaseDecreaseInContractWithCustomerLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Increase (Decrease) in Operating Capital [Abstract]", "terseLabel": "Changes in operating assets and liabilities:" } } }, "localname": "IncreaseDecreaseInOperatingCapitalAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInOperatingLeaseLiability": { "auth_ref": [ "r75", "r352" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in obligation for operating lease.", "label": "Increase (Decrease) in Operating Lease Liability", "terseLabel": "Operating lease liabilities, non-current" } } }, "localname": "IncreaseDecreaseInOperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in noncurrent operating liabilities classified as other.", "label": "Increase (Decrease) in Other Noncurrent Liabilities", "terseLabel": "Other non-current liabilities" } } }, "localname": "IncreaseDecreaseInOtherNoncurrentLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets": { "auth_ref": [ "r75" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in prepaid expenses, and assets classified as other.", "label": "Increase (Decrease) in Prepaid Expense and Other Assets", "negatedLabel": "Prepaid expenses, other current assets and other assets" } } }, "localname": "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Increase (Decrease) in Stockholders' Equity [Roll Forward]", "terseLabel": "Increase (Decrease) in Stockholders' Equity [Roll Forward]" } } }, "localname": "IncreaseDecreaseInStockholdersEquityRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInTemporaryEquityRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Increase (Decrease) in Temporary Equity [Roll Forward]", "terseLabel": "Increase (Decrease) in Temporary Equity [Roll Forward]" } } }, "localname": "IncreaseDecreaseInTemporaryEquityRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "stringItemType" }, "us-gaap_InterestIncomeExpenseNonoperatingNet": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The net amount of nonoperating interest income (expense).", "label": "Interest Income (Expense), Nonoperating, Net", "terseLabel": "Interest income, net" } } }, "localname": "InterestIncomeExpenseNonoperatingNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentTypeAxis": { "auth_ref": [ "r456", "r457", "r458", "r459", "r460", "r461", "r462", "r463", "r464", "r465", "r466", "r467", "r468", "r469", "r470" ], "lang": { "en-us": { "role": { "documentation": "Information by type of investments.", "label": "Investment Type [Axis]", "terseLabel": "Investment Type [Axis]" } } }, "localname": "InvestmentTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeCategorizationMember": { "auth_ref": [ "r456", "r457", "r458", "r459", "r460", "r461", "r462", "r463", "r464", "r465", "r466", "r467", "r468", "r469", "r470" ], "lang": { "en-us": { "role": { "documentation": "Asset obtained to generate income or appreciate in value.", "label": "Investments [Domain]", "terseLabel": "Investments [Domain]" } } }, "localname": "InvestmentTypeCategorizationMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofChangesinEstimatedFairValueofFinancialLiabilitiesDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentsAllOtherInvestmentsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Investments, All Other Investments [Abstract]" } } }, "localname": "InvestmentsAllOtherInvestmentsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_InvestorMember": { "auth_ref": [ "r361", "r362" ], "lang": { "en-us": { "role": { "documentation": "Business entity or individual that puts money, by purchase or expenditure, in something offering potential profitable returns, such as interest income or appreciation in value.", "label": "Investor [Member]", "terseLabel": "Investor" } } }, "localname": "InvestorMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_LeasesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Leases [Abstract]", "terseLabel": "Leases [Abstract]" } } }, "localname": "LeasesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_LesseeLeaseDescriptionLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Lessee, Lease, Description [Line Items]", "terseLabel": "Lessee, Lease, Description [Line Items]" } } }, "localname": "LesseeLeaseDescriptionLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LesseeLeaseDescriptionTable": { "auth_ref": [ "r349" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about lessee's leases.", "label": "Lessee, Lease, Description [Table]", "terseLabel": "Lessee, Lease, Description [Table]" } } }, "localname": "LesseeLeaseDescriptionTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock": { "auth_ref": [ "r355" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.", "label": "Lessee, Operating Lease, Liability, Maturity [Table Text Block]", "terseLabel": "Schedule of Future Minimum Operating Lease Commitments, Including Expected Lease Incentives to be Received" } } }, "localname": "LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue": { "auth_ref": [ "r355" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails_1": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease.", "label": "Lessee, Operating Lease, Liability, to be Paid", "totalLabel": "Total undiscounted lease payments" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths": { "auth_ref": [ "r355" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails_1": { "order": 2.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year One", "terseLabel": "2023" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour": { "auth_ref": [ "r355" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails_1": { "order": 5.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year Four", "terseLabel": "2026" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFour", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree": { "auth_ref": [ "r355" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails_1": { "order": 4.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year Three", "terseLabel": "2025" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearThree", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo": { "auth_ref": [ "r355" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails_1": { "order": 3.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Lessee, Operating Lease, Liability, to be Paid, Year Two", "terseLabel": "2024" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear": { "auth_ref": [ "r355" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails_1": { "order": 1.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.", "label": "Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year", "terseLabel": "2022 (remaining nine months)" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": { "auth_ref": [ "r355" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails": { "order": 1.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.", "label": "Lessee, Operating Lease, Liability, Undiscounted Excess Amount", "negatedLabel": "Less: imputed interest" } } }, "localname": "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeasesTextBlock": { "auth_ref": [ "r357" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability.", "label": "Lessee, Operating Leases [Text Block]", "terseLabel": "Leases" } } }, "localname": "LesseeOperatingLeasesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/Leases" ], "xbrltype": "textBlockItemType" }, "us-gaap_Liabilities": { "auth_ref": [ "r28", "r86", "r141", "r169", "r195", "r196", "r197", "r200", "r201", "r202", "r203", "r204", "r206", "r207", "r318", "r321", "r322", "r338", "r368", "r369" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.", "label": "Liabilities", "totalLabel": "Total liabilities" } } }, "localname": "Liabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r21", "r86", "r169", "r338", "r370", "r420", "r434" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.", "label": "Liabilities and Equity", "totalLabel": "Total liabilities and stockholders\u2019 equity" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities and Equity [Abstract]", "terseLabel": "LIABILITIES AND STOCKHOLDERS\u2019 EQUITY" } } }, "localname": "LiabilitiesAndStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesCurrent": { "auth_ref": [ "r30", "r86", "r169", "r195", "r196", "r197", "r200", "r201", "r202", "r203", "r204", "r206", "r207", "r318", "r321", "r322", "r338", "r368", "r369", "r370" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.", "label": "Liabilities, Current", "totalLabel": "Total current liabilities" } } }, "localname": "LiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities, Current [Abstract]", "terseLabel": "Current liabilities:" } } }, "localname": "LiabilitiesCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesFairValueDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities, Fair Value Disclosure [Abstract]", "terseLabel": "Financial liabilities:" } } }, "localname": "LiabilitiesFairValueDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LicenseMember": { "auth_ref": [ "r253" ], "lang": { "en-us": { "role": { "documentation": "Right to use intangible asset. Intangible asset includes, but is not limited to, patent, copyright, technology, manufacturing process, software or trademark.", "label": "License [Member]", "terseLabel": "License" } } }, "localname": "LicenseMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MarketableSecuritiesCurrent": { "auth_ref": [ "r5", "r29" ], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 1.0, "parentTag": "lyel_CashEquivalentsFairValueDisclosureAndDebtSecuritiesAvailableForSale", "weight": 1.0 }, "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in marketable security, classified as current.", "label": "Marketable Securities, Current", "terseLabel": "Marketable securities" } } }, "localname": "MarketableSecuritiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_MarketableSecuritiesLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Marketable Securities [Line Items]", "terseLabel": "Marketable Securities [Line Items]" } } }, "localname": "MarketableSecuritiesLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails", "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_MarketableSecuritiesNoncurrent": { "auth_ref": [ "r25" ], "calculation": { "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails": { "order": 3.0, "parentTag": "lyel_CashEquivalentsFairValueDisclosureAndDebtSecuritiesAvailableForSale", "weight": 1.0 }, "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investment in marketable security, classified as noncurrent.", "label": "Marketable Securities, Noncurrent", "terseLabel": "Marketable securities, non-current" } } }, "localname": "MarketableSecuritiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_MarketableSecuritiesTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about investment in marketable security.", "label": "Marketable Securities [Table]", "terseLabel": "Marketable Securities [Table]" } } }, "localname": "MarketableSecuritiesTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesNarrativeDetails", "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_MeasurementInputExpectedTermMember": { "auth_ref": [ "r331" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using period financial instrument is expected to be outstanding. Excludes maturity date.", "label": "Measurement Input, Expected Term [Member]", "terseLabel": "Expected term (in years)" } } }, "localname": "MeasurementInputExpectedTermMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputPriceVolatilityMember": { "auth_ref": [ "r331" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using rate at which price of security will increase (decrease) for given set of returns.", "label": "Measurement Input, Price Volatility [Member]", "terseLabel": "Expected volatility" } } }, "localname": "MeasurementInputPriceVolatilityMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputRiskFreeInterestRateMember": { "auth_ref": [ "r331" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using interest rate on instrument with zero risk of financial loss.", "label": "Measurement Input, Risk Free Interest Rate [Member]", "terseLabel": "Risk-free interest rate" } } }, "localname": "MeasurementInputRiskFreeInterestRateMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputTypeAxis": { "auth_ref": [ "r331" ], "lang": { "en-us": { "role": { "documentation": "Information by type of measurement input used to determine value of asset and liability.", "label": "Measurement Input Type [Axis]", "terseLabel": "Measurement Input Type [Axis]" } } }, "localname": "MeasurementInputTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_MeasurementInputTypeDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Measurement input used to determine value of asset and liability.", "label": "Measurement Input Type [Domain]", "terseLabel": "Measurement Input Type [Domain]" } } }, "localname": "MeasurementInputTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsSummaryofEstimatedFairValueofSuccessPaymentLiabilityAssumptionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.", "label": "Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners", "terseLabel": "Ownership interest (as a percent)" } } }, "localname": "MinorityInterestOwnershipPercentageByNoncontrollingOwners", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "percentItemType" }, "us-gaap_MoneyMarketFundsMember": { "auth_ref": [ "r255" ], "lang": { "en-us": { "role": { "documentation": "Fund that invests in short-term money-market instruments, for example, but not limited to, commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and other highly liquid securities.", "label": "Money Market Funds [Member]", "terseLabel": "Money market funds" } } }, "localname": "MoneyMarketFundsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r73" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.", "label": "Net Cash Provided by (Used in) Financing Activities", "totalLabel": "Net cash provided by financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]", "terseLabel": "CASH FLOWS FROM FINANCING ACTIVITIES" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r73" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.", "label": "Net Cash Provided by (Used in) Investing Activities", "totalLabel": "Net cash (used in) provided by investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]", "terseLabel": "CASH FLOWS FROM INVESTING ACTIVITIES" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r73", "r74", "r77" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.", "label": "Net Cash Provided by (Used in) Operating Activities", "totalLabel": "Net cash used in operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "CASH FLOWS FROM OPERATING ACTIVITIES" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r2", "r47", "r50", "r55", "r58", "r77", "r86", "r96", "r98", "r99", "r100", "r101", "r104", "r105", "r111", "r137", "r139", "r142", "r145", "r147", "r169", "r195", "r196", "r197", "r200", "r201", "r202", "r203", "r204", "r206", "r207", "r327", "r338", "r423", "r439" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.", "label": "Net Income (Loss) Attributable to Parent", "terseLabel": "Net loss", "totalLabel": "Net loss" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows", "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetRentableArea": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Net rentable area for properties owned.", "label": "Net Rentable Area", "terseLabel": "Rentable area" } } }, "localname": "NetRentableArea", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "areaItemType" }, "us-gaap_NoncashInvestingAndFinancingItemsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Noncash Investing and Financing Items [Abstract]", "terseLabel": "Non-cash investing and financing activities:" } } }, "localname": "NoncashInvestingAndFinancingItemsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NoncontrollingInterestInVariableInterestEntity": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest).", "label": "Noncontrolling Interest in Variable Interest Entity", "terseLabel": "Noncontrolling interest in variable interest entity" } } }, "localname": "NoncontrollingInterestInVariableInterestEntity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NonoperatingIncomeExpense": { "auth_ref": [ "r65" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).", "label": "Nonoperating Income (Expense)", "totalLabel": "Total other income, net" } } }, "localname": "NonoperatingIncomeExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock": { "auth_ref": [ "r274" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the changes in outstanding nonvested restricted stock shares.", "label": "Nonvested Restricted Stock Shares Activity [Table Text Block]", "terseLabel": "Summary of RSA Activity" } } }, "localname": "NonvestedRestrictedStockSharesActivityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock": { "auth_ref": [ "r151", "r175" ], "lang": { "en-us": { "role": { "documentation": "Description of accounting policies and methodologies used to estimate the entity's liability for off-balance sheet credit exposures and related charges for those credit exposures.", "label": "Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block]", "terseLabel": "Off-balance Sheet Risk" } } }, "localname": "OffBalanceSheetCreditExposurePolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_OperatingExpenses": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.", "label": "Operating Expenses", "totalLabel": "Total operating expenses" } } }, "localname": "OperatingExpenses", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingExpensesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Operating Expenses [Abstract]", "terseLabel": "Operating expenses:" } } }, "localname": "OperatingExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingIncomeLoss": { "auth_ref": [ "r137", "r139", "r142", "r145", "r147" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The net result for the period of deducting operating expenses from operating revenues.", "label": "Operating Income (Loss)", "totalLabel": "Loss from operations" } } }, "localname": "OperatingIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseCost": { "auth_ref": [ "r350", "r356" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.", "label": "Operating Lease, Cost", "terseLabel": "Operating lease cost" } } }, "localname": "OperatingLeaseCost", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiability": { "auth_ref": [ "r348" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails": { "order": 3.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease.", "label": "Operating Lease, Liability", "terseLabel": "Total operating lease liabilities", "totalLabel": "Total" } } }, "localname": "OperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Operating Lease, Liability [Abstract]", "terseLabel": "Operating Lease Liability" } } }, "localname": "OperatingLeaseLiabilityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingLeaseLiabilityCurrent": { "auth_ref": [ "r348" ], "calculation": { "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails": { "order": 1.0, "parentTag": "us-gaap_OperatingLeaseLiability", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.", "label": "Operating Lease, Liability, Current", "verboseLabel": "Short-term portion of lease liabilities (included in accrued liabilities and other current liabilities)" } } }, "localname": "OperatingLeaseLiabilityCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilityNoncurrent": { "auth_ref": [ "r348" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 }, "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails": { "order": 2.0, "parentTag": "us-gaap_OperatingLeaseLiability", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.", "label": "Operating Lease, Liability, Noncurrent", "terseLabel": "Operating lease liabilities, non-current" } } }, "localname": "OperatingLeaseLiabilityNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets", "http://lyell.com/role/LeasesSummaryofOperatingLeaseCommitmentsIncludingExpectedLeaseIncentivestobeReceivedDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseRightOfUseAsset": { "auth_ref": [ "r347" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of lessee's right to use underlying asset under operating lease.", "label": "Operating Lease, Right-of-Use Asset", "terseLabel": "Operating lease right-of-use assets" } } }, "localname": "OperatingLeaseRightOfUseAsset", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent": { "auth_ref": [ "r354", "r356" ], "lang": { "en-us": { "role": { "documentation": "Weighted average discount rate for operating lease calculated at point in time.", "label": "Operating Lease, Weighted Average Discount Rate, Percent", "terseLabel": "Operating lease, weighted average discount rate (as a percent)" } } }, "localname": "OperatingLeaseWeightedAverageDiscountRatePercent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1": { "auth_ref": [ "r353", "r356" ], "lang": { "en-us": { "role": { "documentation": "Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Operating Lease, Weighted Average Remaining Lease Term", "terseLabel": "Weighted average remaining lease term of operating leases" } } }, "localname": "OperatingLeaseWeightedAverageRemainingLeaseTerm1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_OperatingLeasesOfLessorDisclosureTextBlock": { "auth_ref": [ "r358" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for lessor's operating leases.", "label": "Lessor, Operating Leases [Text Block]", "terseLabel": "Leases" } } }, "localname": "OperatingLeasesOfLessorDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/Leases" ], "xbrltype": "textBlockItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Organization, Consolidation and Presentation of Financial Statements [Abstract]", "terseLabel": "Organization, Consolidation and Presentation of Financial Statements [Abstract]" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock": { "auth_ref": [ "r3", "r92", "r133", "r323" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements.", "label": "Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]", "terseLabel": "Basis of Presentation and Significant Accounting Policies" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock": { "auth_ref": [ "r3", "r323" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.", "label": "Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]", "terseLabel": "Organization" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/Organization" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherAssetsNoncurrent": { "auth_ref": [ "r26" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of noncurrent assets classified as other.", "label": "Other Assets, Noncurrent", "terseLabel": "Other non-current assets" } } }, "localname": "OtherAssetsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r48", "r51", "r53", "r54", "r56", "r59", "r236", "r340", "r345", "r346", "r424", "r440" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Other comprehensive loss" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]", "terseLabel": "Comprehensive loss:" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax": { "auth_ref": [ "r42", "r44" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.", "label": "OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax", "terseLabel": "Net unrealized loss on marketable securities" } } }, "localname": "OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherInvestments": { "auth_ref": [ "r25", "r438" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of investments classified as other.", "label": "Other Investments", "terseLabel": "Other investments" } } }, "localname": "OtherInvestments", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets", "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherLiabilitiesNoncurrent": { "auth_ref": [ "r32" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.", "label": "Other Liabilities, Noncurrent", "terseLabel": "Other non-current liabilities" } } }, "localname": "OtherLiabilitiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherNonoperatingIncomeExpense": { "auth_ref": [ "r66" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of income (expense) related to nonoperating activities, classified as other.", "label": "Other Nonoperating Income (Expense)", "terseLabel": "Other income (expense), net" } } }, "localname": "OtherNonoperatingIncomeExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherOperatingIncomeExpenseNet": { "auth_ref": [], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 3.0, "parentTag": "us-gaap_OperatingExpenses", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.", "label": "Other Operating Income (Expense), Net", "negatedLabel": "Other operating income, net" } } }, "localname": "OtherOperatingIncomeExpenseNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfStockIssuanceCosts": { "auth_ref": [ "r72" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow for cost incurred directly with the issuance of an equity security.", "label": "Payments of Stock Issuance Costs", "terseLabel": "Offering expenses" } } }, "localname": "PaymentsOfStockIssuanceCosts", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r67", "r69", "r154" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Payments to Acquire Debt Securities, Available-for-sale", "negatedLabel": "Purchases of marketable securities" } } }, "localname": "PaymentsToAcquireAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": { "auth_ref": [ "r70" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.", "label": "Payments to Acquire Property, Plant, and Equipment", "negatedLabel": "Purchases of property and equipment" } } }, "localname": "PaymentsToAcquirePropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PlanNameAxis": { "auth_ref": [ "r269", "r299" ], "lang": { "en-us": { "role": { "documentation": "Information by plan name for share-based payment arrangement.", "label": "Plan Name [Axis]", "terseLabel": "Plan Name" } } }, "localname": "PlanNameAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PlanNameDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Plan name for share-based payment arrangement.", "label": "Plan Name [Domain]", "terseLabel": "Plan Name" } } }, "localname": "PlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PreferredStockParOrStatedValuePerShare": { "auth_ref": [ "r14", "r219" ], "lang": { "en-us": { "role": { "documentation": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.", "label": "Preferred Stock, Par or Stated Value Per Share", "terseLabel": "Preferred stock, par value (in dollars per share)" } } }, "localname": "PreferredStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockSharesAuthorized": { "auth_ref": [ "r14" ], "lang": { "en-us": { "role": { "documentation": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.", "label": "Preferred Stock, Shares Authorized", "terseLabel": "Preferred stock authorized (in shares)" } } }, "localname": "PreferredStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesIssued": { "auth_ref": [ "r14", "r219" ], "lang": { "en-us": { "role": { "documentation": "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.", "label": "Preferred Stock, Shares Issued", "terseLabel": "Preferred stock issued (in shares)" } } }, "localname": "PreferredStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesOutstanding": { "auth_ref": [ "r14" ], "lang": { "en-us": { "role": { "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.", "label": "Preferred Stock, Shares Outstanding", "terseLabel": "Preferred stock outstanding (in shares)" } } }, "localname": "PreferredStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheetsParenthetical", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockTextBlock": { "auth_ref": [ "r245" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to preferred stock.", "label": "Preferred Stock [Text Block]", "terseLabel": "Convertible Preferred Stock" } } }, "localname": "PreferredStockTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/ConvertiblePreferredStock" ], "xbrltype": "textBlockItemType" }, "us-gaap_PreferredStockValue": { "auth_ref": [ "r14", "r370" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Preferred Stock, Value, Issued", "terseLabel": "Preferred stock, $0.0001 par value; 10,000 shares authorized at March\u00a031, 2022 and December\u00a031, 2021; zero shares issued and outstanding at March\u00a031, 2022 and December\u00a031, 2021" } } }, "localname": "PreferredStockValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrepaidExpenseAndOtherAssetsCurrent": { "auth_ref": [ "r6", "r22", "r23" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.", "label": "Prepaid Expense and Other Assets, Current", "terseLabel": "Prepaid expenses and other current assets" } } }, "localname": "PrepaidExpenseAndOtherAssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_PriorPeriodReclassificationAdjustmentDescription": { "auth_ref": [ "r1" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for reclassification affecting comparability of financial statement. Excludes amendment to accounting standards, other change in accounting principle, and correction of error.", "label": "Reclassification, Comparability Adjustment [Policy Text Block]", "terseLabel": "Reclassifications" } } }, "localname": "PriorPeriodReclassificationAdjustmentDescription", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities": { "auth_ref": [ "r67", "r68", "r154" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Proceeds from Sale and Maturity of Debt Securities, Available-for-sale", "terseLabel": "Sales and maturities of marketable securities" } } }, "localname": "ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromStockOptionsExercised": { "auth_ref": [ "r71", "r300" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow from exercise of option under share-based payment arrangement.", "label": "Proceeds from Stock Options Exercised", "terseLabel": "Proceeds from exercise of stock options" } } }, "localname": "ProceedsFromStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentNet": { "auth_ref": [ "r9", "r10", "r186", "r370", "r429", "r435" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.", "label": "Property, Plant and Equipment, Net", "terseLabel": "Property and equipment, net" } } }, "localname": "PropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_RelatedPartyDomain": { "auth_ref": [ "r262", "r361", "r362" ], "lang": { "en-us": { "role": { "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Domain]", "terseLabel": "Related Party [Domain]" } } }, "localname": "RelatedPartyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RelatedPartyTransactionAxis": { "auth_ref": [ "r262", "r361", "r362", "r364" ], "lang": { "en-us": { "role": { "documentation": "Information by type of related party transaction.", "label": "Related Party Transaction [Axis]", "terseLabel": "Related Party Transaction [Axis]" } } }, "localname": "RelatedPartyTransactionAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionDomain": { "auth_ref": [ "r262" ], "lang": { "en-us": { "role": { "documentation": "Transaction between related party.", "label": "Related Party Transaction [Domain]", "terseLabel": "Related Party Transaction [Domain]" } } }, "localname": "RelatedPartyTransactionDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RelatedPartyTransactionLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Related Party Transaction [Line Items]", "terseLabel": "Related Party Transaction [Line Items]" } } }, "localname": "RelatedPartyTransactionLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Related Party Transactions [Abstract]", "terseLabel": "Related Party Transactions [Abstract]" } } }, "localname": "RelatedPartyTransactionsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": { "auth_ref": [ "r262", "r361", "r364", "r407", "r408", "r409", "r410", "r411", "r412", "r413", "r414", "r415", "r416", "r417", "r418" ], "lang": { "en-us": { "role": { "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Axis]", "terseLabel": "Related Party [Axis]" } } }, "localname": "RelatedPartyTransactionsByRelatedPartyAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": { "auth_ref": [ "r359", "r360", "r362", "r365", "r366" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Related Party Transactions Disclosure [Text Block]", "terseLabel": "Related-party Transactions" } } }, "localname": "RelatedPartyTransactionsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactions" ], "xbrltype": "textBlockItemType" }, "us-gaap_ResearchAndDevelopmentExpense": { "auth_ref": [ "r310", "r405", "r476" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 1.0, "parentTag": "us-gaap_OperatingExpenses", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.", "label": "Research and Development Expense", "terseLabel": "Research and development", "verboseLabel": "Research and development expense" } } }, "localname": "ResearchAndDevelopmentExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ResearchAndDevelopmentExpenseMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Primary financial statement caption in which the reported facts about research and development expense have been included.", "label": "Research and Development Expense [Member]", "terseLabel": "Research and development" } } }, "localname": "ResearchAndDevelopmentExpenseMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Type of cash and cash equivalent. Cash is currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash and Cash Equivalents [Domain]", "terseLabel": "Cash and Cash Equivalents [Domain]" } } }, "localname": "RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedCashNoncurrent": { "auth_ref": [ "r8", "r11", "r82", "r471" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 7.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.", "label": "Restricted Cash, Noncurrent", "terseLabel": "Restricted cash" } } }, "localname": "RestrictedCashNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets", "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestrictedStockMember": { "auth_ref": [ "r115" ], "lang": { "en-us": { "role": { "documentation": "Stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met.", "label": "Restricted Stock [Member]", "terseLabel": "RSAs", "verboseLabel": "Unvested RSAs" } } }, "localname": "RestrictedStockMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedStockUnitsRSUMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.", "label": "Restricted Stock Units (RSUs) [Member]", "terseLabel": "RSUs", "verboseLabel": "Unvested RSUs" } } }, "localname": "RestrictedStockUnitsRSUMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails", "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r17", "r244", "r304", "r370", "r433", "r450", "r452" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings (Accumulated Deficit)", "terseLabel": "Accumulated deficit" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [ "r0", "r93", "r94", "r95", "r97", "r103", "r105", "r170", "r301", "r302", "r303", "r311", "r312", "r325", "r447", "r449" ], "lang": { "en-us": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings [Member]", "terseLabel": "Accumulated Deficit" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "domainItemType" }, "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax": { "auth_ref": [ "r134", "r135", "r138", "r143", "r144", "r148", "r149", "r150", "r250", "r251", "r406" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.", "label": "Revenue from Contract with Customer, Excluding Assessed Tax", "terseLabel": "Revenue recognized" } } }, "localname": "RevenueFromContractWithCustomerExcludingAssessedTax", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueFromRelatedParties": { "auth_ref": [ "r63", "r198", "r200", "r201", "r205", "r206", "r207", "r454" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.", "label": "Revenue from Related Parties", "terseLabel": "Revenue recognized from related parties" } } }, "localname": "RevenueFromRelatedParties", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueRemainingPerformanceObligation": { "auth_ref": [ "r249" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of transaction price allocated to performance obligation that has not been recognized as revenue.", "label": "Revenue, Remaining Performance Obligation, Amount", "terseLabel": "Transaction price" } } }, "localname": "RevenueRemainingPerformanceObligation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_Revenues": { "auth_ref": [ "r57", "r86", "r134", "r135", "r138", "r143", "r144", "r148", "r149", "r150", "r169", "r195", "r196", "r197", "r200", "r201", "r202", "r203", "r204", "r206", "r207", "r338", "r427" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss": { "order": 2.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).", "label": "Revenues", "terseLabel": "Revenue" } } }, "localname": "Revenues", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "monetaryItemType" }, "us-gaap_SaleOfStockConsiderationReceivedOnTransaction": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Cash received on stock transaction after deduction of issuance costs.", "label": "Sale of Stock, Consideration Received on Transaction", "terseLabel": "Net proceeds from sale of stock, after underwriting discounts and commissions" } } }, "localname": "SaleOfStockConsiderationReceivedOnTransaction", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SaleOfStockNameOfTransactionDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement.", "label": "Sale of Stock [Domain]", "terseLabel": "Sale of Stock [Domain]" } } }, "localname": "SaleOfStockNameOfTransactionDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SaleOfStockPricePerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.", "label": "Sale of Stock, Price Per Share", "terseLabel": "Common stock, par value (in dollars per share)" } } }, "localname": "SaleOfStockPricePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable": { "auth_ref": [ "r115" ], "lang": { "en-us": { "role": { "documentation": "Schedule for securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by Antidilutive Securities.", "label": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]", "terseLabel": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]" } } }, "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock": { "auth_ref": [ "r115" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.", "label": "Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]", "terseLabel": "Schedule of Potentially Dilutive Securities" } } }, "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/NetLossPerShareTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of cash, cash equivalents, and investments.", "label": "Cash, Cash Equivalents and Investments [Table Text Block]", "terseLabel": "Schedule of Fair Value and Amortized Cost of Cash Equivalents" } } }, "localname": "ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable": { "auth_ref": [ "r315" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Table]", "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative [Table]" } } }, "localname": "ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTableTextBlock": { "auth_ref": [ "r315" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Table Text Block]", "terseLabel": "Schedule of Aggregate Potential Success Payments" } } }, "localname": "ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable": { "auth_ref": [ "r268", "r296", "r306" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about amount recognized for award under share-based payment arrangement. Includes, but is not limited to, amount expensed in statement of income or comprehensive income, amount capitalized in statement of financial position, and corresponding reporting line item in financial statements.", "label": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]", "terseLabel": "Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table]" } } }, "localname": "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofStockBasedCompensationExpensebyClassificationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock": { "auth_ref": [ "r268", "r296", "r306" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.", "label": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]", "terseLabel": "Schedule of Stock-based Compensation Expense by Classification" } } }, "localname": "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [ "r328", "r329" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]", "terseLabel": "Financial Assets and Liabilities Measured at Fair Value on Recurring Basis" } } }, "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/FairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfInvestmentsLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Schedule of Investments [Line Items]", "terseLabel": "Schedule of Investments [Line Items]" } } }, "localname": "ScheduleOfInvestmentsLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfInvestmentsTable": { "auth_ref": [ "r455" ], "lang": { "en-us": { "role": { "documentation": "A container table for all schedule of investment items. It ties in the \"Legal Entity [Axis]\" to all of its contained line items.", "label": "Schedule of Investments [Table]", "terseLabel": "Schedule of Investments [Table]" } } }, "localname": "ScheduleOfInvestmentsTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": { "auth_ref": [ "r363", "r364" ], "lang": { "en-us": { "role": { "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Schedule of Related Party Transactions, by Related Party [Table]", "terseLabel": "Schedule of Related Party Transactions, by Related Party [Table]" } } }, "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": { "auth_ref": [ "r269", "r299" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about share-based payment arrangement.", "label": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]", "terseLabel": "Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]" } } }, "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails", "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock": { "auth_ref": [ "r275", "r286", "r288" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.", "label": "Share-based Payment Arrangement, Option, Activity [Table Text Block]", "terseLabel": "Summary of Stock Option Activity" } } }, "localname": "ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock": { "auth_ref": [ "r290" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.", "label": "Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]", "terseLabel": "Schedule of Assumptions Used in Black-Scholes Option-Pricing Model for Estimating Fair Value of Stock Options Granted" } } }, "localname": "ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfStockByClassTable": { "auth_ref": [ "r34", "r84", "r122", "r123", "r216", "r217", "r218", "r219", "r220", "r221", "r222", "r224", "r228", "r234", "r237", "r238", "r239", "r241", "r242", "r243", "r244" ], "lang": { "en-us": { "role": { "documentation": "Schedule detailing information related to equity by class of stock. Class of stock includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. It also includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity.", "label": "Schedule of Stock by Class [Table]", "terseLabel": "Schedule of Stock by Class [Table]" } } }, "localname": "ScheduleOfStockByClassTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the change in restricted stock units (RSUs).", "label": "Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block]", "terseLabel": "Summary of RSU Activity" } } }, "localname": "ScheduleOfUnvestedRestrictedStockUnitsRollForwardTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ShareBasedCompensation": { "auth_ref": [ "r75" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of noncash expense for share-based payment arrangement.", "label": "Share-based Payment Arrangement, Noncash Expense", "terseLabel": "Stock-based compensation expense" } } }, "localname": "ShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1": { "auth_ref": [ "r270" ], "lang": { "en-us": { "role": { "documentation": "Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period", "verboseLabel": "Vesting period" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod": { "auth_ref": [ "r280" ], "lang": { "en-us": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period", "negatedTerseLabel": "Forfeited or canceled (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue": { "auth_ref": [ "r285" ], "lang": { "en-us": { "role": { "documentation": "Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value", "terseLabel": "Forfeited or canceled (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": { "auth_ref": [ "r283" ], "lang": { "en-us": { "role": { "documentation": "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).", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period", "terseLabel": "Granted (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r283" ], "lang": { "en-us": { "role": { "documentation": "The weighted average fair value at grant date for nonvested equity-based awards issued 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).", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Granted (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": { "auth_ref": [ "r282" ], "lang": { "en-us": { "role": { "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number", "periodEndLabel": "Balance at end of period (in shares)", "periodStartLabel": "Balance at beginning of period (in shares)", "terseLabel": "Awards outstanding (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]", "terseLabel": "Number of Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue": { "auth_ref": [ "r282" ], "lang": { "en-us": { "role": { "documentation": "Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value", "periodEndLabel": "Balance at end of period (in dollars per share)", "periodStartLabel": "Balance at beginning of period (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]", "terseLabel": "Weighted-Average Value at Grant Date Per Share" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": { "auth_ref": [ "r284" ], "lang": { "en-us": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period", "negatedLabel": "Vested (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r284" ], "lang": { "en-us": { "role": { "documentation": "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value", "terseLabel": "Vested (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate": { "auth_ref": [ "r293" ], "lang": { "en-us": { "role": { "documentation": "The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate", "terseLabel": "Expected dividend yield (as a percent)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofAssumptionsUsedinBlackScholesOptionPricingModelforEstimatingFairValueofStockOptionsGrantedDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate": { "auth_ref": [ "r292" ], "lang": { "en-us": { "role": { "documentation": "The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate", "terseLabel": "Expected volatility (as a percent)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofAssumptionsUsedinBlackScholesOptionPricingModelforEstimatingFairValueofStockOptionsGrantedDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate": { "auth_ref": [ "r294" ], "lang": { "en-us": { "role": { "documentation": "The risk-free interest rate assumption that is used in valuing an option on its own shares.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate", "terseLabel": "Risk-free interest rate (as a percent)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofAssumptionsUsedinBlackScholesOptionPricingModelforEstimatingFairValueofStockOptionsGrantedDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]", "terseLabel": "Share Based Compensation Arrangement By Share Based Payment Award [Line Items]" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails", "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate": { "auth_ref": [ "r299" ], "lang": { "en-us": { "role": { "documentation": "The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate", "terseLabel": "Purchase of common stock at discount (as a percent)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of additional shares authorized for issuance under share-based payment arrangement.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized", "terseLabel": "Number of additional shares authorized for issuance (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized": { "auth_ref": [ "r272" ], "lang": { "en-us": { "role": { "documentation": "Number of shares authorized for issuance under share-based payment arrangement.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized", "terseLabel": "Common shares reserved for future issuance (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]", "terseLabel": "Weighted- Average Remaining Contractual Life (in years)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber": { "auth_ref": [ "r278" ], "lang": { "en-us": { "role": { "documentation": "The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number", "terseLabel": "Exercisable (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice": { "auth_ref": [ "r278" ], "lang": { "en-us": { "role": { "documentation": "The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price", "terseLabel": "Exercisable (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod": { "auth_ref": [ "r281" ], "lang": { "en-us": { "role": { "documentation": "For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period", "negatedLabel": "Canceled or forfeited (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice": { "auth_ref": [ "r281" ], "lang": { "en-us": { "role": { "documentation": "Weighted average price of options that were either forfeited or expired.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price", "terseLabel": "Cancelled or forfeited (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Gross number of share options (or share units) granted during the period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross", "terseLabel": "Granted (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r287" ], "lang": { "en-us": { "role": { "documentation": "The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value", "verboseLabel": "Weighted average grant date fair value (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue": { "auth_ref": [ "r299" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value", "terseLabel": "Options Outstanding" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber": { "auth_ref": [ "r277", "r299" ], "lang": { "en-us": { "role": { "documentation": "Number of options outstanding, including both vested and non-vested options.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number", "periodEndLabel": "Ending balance (in shares)", "periodStartLabel": "Beginning balance (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]", "terseLabel": "Number of Stock Options" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice": { "auth_ref": [ "r276" ], "lang": { "en-us": { "role": { "documentation": "Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price", "periodEndLabel": "Ending balance (in dollars per share)", "periodStartLabel": "Beginning balance (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]", "terseLabel": "Weighted- Average Exercise Price Per Share" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]", "terseLabel": "Aggregate Intrinsic Value (in thousands)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod": { "auth_ref": [ "r299" ], "lang": { "en-us": { "role": { "documentation": "Number of shares issued under share-based payment arrangement.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period", "terseLabel": "Stock-based compensation (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": { "auth_ref": [ "r267", "r273" ], "lang": { "en-us": { "role": { "documentation": "Award under share-based payment arrangement.", "label": "Award Type [Domain]", "terseLabel": "Award Type [Domain]" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationRestrictedStockUnitsDetails", "http://lyell.com/role/StockbasedCompensationSummaryofRSAActivityDetails", "http://lyell.com/role/StockholdersEquityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Weighted average price at which option holders acquired shares when converting their stock options into shares.", "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price", "terseLabel": "Exercised (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.", "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price", "terseLabel": "Granted (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod": { "auth_ref": [ "r271" ], "lang": { "en-us": { "role": { "documentation": "Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period", "terseLabel": "Award expiration period" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1": { "auth_ref": [ "r291", "r305" ], "lang": { "en-us": { "role": { "documentation": "Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term", "terseLabel": "Expected term (in years)" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationScheduleofAssumptionsUsedinBlackScholesOptionPricingModelforEstimatingFairValueofStockOptionsGrantedDetails" ], "xbrltype": "durationItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1": { "auth_ref": [ "r299" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value", "terseLabel": "Options Exercisable" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1": { "auth_ref": [ "r299" ], "lang": { "en-us": { "role": { "documentation": "Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term", "terseLabel": "Options Exercisable" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "durationItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2": { "auth_ref": [ "r289" ], "lang": { "en-us": { "role": { "documentation": "Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term", "terseLabel": "Options Outstanding" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "durationItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Purchase price of common stock expressed as a percentage of its fair value.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent", "terseLabel": "Employee purchase of shares, proportion of fair value (as a percent)" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockbasedCompensationNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_SharesIssuedPricePerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Per share or per unit amount of equity securities issued.", "label": "Shares Issued, Price Per Share", "terseLabel": "Convertible preferred stock, par value (in dollars per share)" } } }, "localname": "SharesIssuedPricePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_StatementClassOfStockAxis": { "auth_ref": [ "r13", "r14", "r15", "r84", "r86", "r108", "r109", "r110", "r112", "r114", "r122", "r123", "r124", "r169", "r195", "r200", "r201", "r202", "r206", "r207", "r219", "r220", "r224", "r228", "r236", "r338", "r482" ], "lang": { "en-us": { "role": { "documentation": "Information by the different classes of stock of the entity.", "label": "Class of Stock [Axis]", "terseLabel": "Class of Stock [Axis]" } } }, "localname": "StatementClassOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r0", "r37", "r53", "r54", "r55", "r93", "r94", "r95", "r97", "r103", "r105", "r121", "r170", "r236", "r244", "r301", "r302", "r303", "r311", "r312", "r325", "r340", "r341", "r342", "r343", "r344", "r346", "r447", "r448", "r449", "r491" ], "lang": { "en-us": { "role": { "documentation": "Information by component of equity.", "label": "Equity Components [Axis]", "terseLabel": "Equity Components [Axis]" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "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.", "label": "Statement [Line Items]", "terseLabel": "Statement [Line Items]" } } }, "localname": "StatementLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "stringItemType" }, "us-gaap_StatementOfCashFlowsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Cash Flows [Abstract]", "terseLabel": "Statement of Cash Flows [Abstract]" } } }, "localname": "StatementOfCashFlowsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfFinancialPositionAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Financial Position [Abstract]", "terseLabel": "Statement of Financial Position [Abstract]" } } }, "localname": "StatementOfFinancialPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Comprehensive Income [Abstract]", "terseLabel": "Statement of Comprehensive Income [Abstract]" } } }, "localname": "StatementOfIncomeAndComprehensiveIncomeAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Statement of Stockholders' Equity [Abstract]", "terseLabel": "Statement of Stockholders' Equity [Abstract]" } } }, "localname": "StatementOfStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [ "r93", "r94", "r95", "r121", "r406" ], "lang": { "en-us": { "role": { "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.", "label": "Statement [Table]", "terseLabel": "Statement [Table]" } } }, "localname": "StatementTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "stringItemType" }, "us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities": { "auth_ref": [ "r36", "r211", "r236", "r237", "r244" ], "lang": { "en-us": { "role": { "documentation": "Number of shares issued during the period as a result of the conversion of convertible securities.", "label": "Stock Issued During Period, Shares, Conversion of Convertible Securities", "terseLabel": "Conversion of preferred stock into common stock (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesNewIssues": { "auth_ref": [ "r14", "r15", "r236", "r244" ], "lang": { "en-us": { "role": { "documentation": "Number of new stock issued during the period.", "label": "Stock Issued During Period, Shares, New Issues", "terseLabel": "Issuance of common stock (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesNewIssues", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation": { "auth_ref": [ "r14", "r15", "r236", "r244" ], "lang": { "en-us": { "role": { "documentation": "Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).", "label": "Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture", "terseLabel": "Stock-based compensation (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised": { "auth_ref": [ "r14", "r15", "r236", "r244", "r279" ], "lang": { "en-us": { "role": { "documentation": "Number of share options (or share units) exercised during the current period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period", "negatedLabel": "Exercised (in shares)", "verboseLabel": "Issuance of common stock upon exercise of stock options (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/StockbasedCompensationSummaryofStockOptionActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised": { "auth_ref": [ "r37", "r236", "r244" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Value of stock issued as a result of the exercise of stock options.", "label": "Stock Issued During Period, Value, Stock Options Exercised", "terseLabel": "Issuance of common stock upon exercise of stock options" } } }, "localname": "StockIssuedDuringPeriodValueStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r15", "r19", "r20", "r86", "r152", "r169", "r338", "r370" ], "calculation": { "http://lyell.com/role/CondensedConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.", "label": "Stockholders' Equity Attributable to Parent", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "totalLabel": "Total stockholders\u2019 equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets", "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]", "terseLabel": "Stockholders\u2019 equity:" } } }, "localname": "StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityNoteDisclosureTextBlock": { "auth_ref": [ "r85", "r220", "r223", "r224", "r225", "r226", "r227", "r228", "r229", "r230", "r232", "r233", "r235", "r244", "r245" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.", "label": "Stockholders' Equity Note Disclosure [Text Block]", "terseLabel": "Stockholders' Equity" } } }, "localname": "StockholdersEquityNoteDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/StockholdersEquity" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubsequentEventsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Subsequent Events [Abstract]", "terseLabel": "Subsequent Events [Abstract]" } } }, "localname": "SubsequentEventsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventsTextBlock": { "auth_ref": [ "r371", "r372" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.", "label": "Subsequent Events [Text Block]", "terseLabel": "Subsequent Events" } } }, "localname": "SubsequentEventsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/SubsequentEvents" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubsidiarySaleOfStockAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by type of sale of the entity's stock.", "label": "Sale of Stock [Axis]", "terseLabel": "Sale of Stock [Axis]" } } }, "localname": "SubsidiarySaleOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OrganizationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SupplementalCashFlowInformationAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Supplemental Cash Flow Information [Abstract]", "terseLabel": "SUPPLEMENTAL CASH FLOW INFORMATION" } } }, "localname": "SupplementalCashFlowInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_TemporaryEquityCarryingAmountAttributableToParent": { "auth_ref": [ "r195", "r200", "r201", "r202", "r206", "r207" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.", "label": "Temporary Equity, Carrying Amount, Attributable to Parent", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance" } } }, "localname": "TemporaryEquityCarryingAmountAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_TemporaryEquitySharesOutstanding": { "auth_ref": [ "r12" ], "lang": { "en-us": { "role": { "documentation": "The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.", "label": "Temporary Equity, Shares Outstanding", "periodEndLabel": "Ending balance (in shares)", "periodStartLabel": "Beginning balance (in shares)", "terseLabel": "Convertible preferred stock outstanding (in shares)" } } }, "localname": "TemporaryEquitySharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofConvertiblePreferredStockandStockholdersEquityDeficit", "http://lyell.com/role/ConvertiblePreferredStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TenantImprovements": { "auth_ref": [ "r437" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants.", "label": "Tenant Improvements", "terseLabel": "Tenant improvements" } } }, "localname": "TenantImprovements", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails", "http://lyell.com/role/RelatedpartyTransactionsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": { "auth_ref": [ "r160", "r161", "r165", "r166", "r167", "r212", "r234", "r324", "r373", "r374", "r375", "r376", "r377", "r378", "r379", "r380", "r381", "r382", "r383", "r384", "r385", "r386", "r387", "r388", "r389", "r390", "r391", "r392", "r393", "r394", "r395", "r396", "r397", "r398", "r399", "r400", "r401", "r402", "r482", "r483", "r484", "r485", "r486", "r487", "r488" ], "lang": { "en-us": { "role": { "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.", "label": "Financial Instruments [Domain]", "terseLabel": "Financial Instruments [Domain]" } } }, "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TypeOfArrangementAxis": { "auth_ref": [ "r315" ], "lang": { "en-us": { "role": { "documentation": "Information by collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.", "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Axis]", "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative [Axis]" } } }, "localname": "TypeOfArrangementAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsNarrativeDetails", "http://lyell.com/role/LicenseCollaborationandSuccessPaymentAgreementsScheduleofAggregatePotentialSuccessPaymentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_USGovernmentAgenciesDebtSecuritiesMember": { "auth_ref": [ "r88", "r255", "r428" ], "lang": { "en-us": { "role": { "documentation": "Debentures, notes, and other debt securities issued by US government agencies, for example, but not limited to, Government National Mortgage Association (GNMA or Ginnie Mae). Excludes US treasury securities and debt issued by government-sponsored Enterprises (GSEs), for example, but is not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB).", "label": "US Government Agencies Debt Securities [Member]", "terseLabel": "U.S. government agency securities" } } }, "localname": "USGovernmentAgenciesDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USTreasurySecuritiesMember": { "auth_ref": [ "r88", "r255", "r263", "r428" ], "lang": { "en-us": { "role": { "documentation": "This category includes information about debt securities issued by the United States Department of the Treasury and backed by the United States government. Such securities primarily consist of treasury bills (short-term maturities - one year or less), treasury notes (intermediate term maturities - two to ten years), and treasury bonds (long-term maturities - ten to thirty years).", "label": "US Treasury Securities [Member]", "terseLabel": "U.S. Treasury securities" } } }, "localname": "USTreasurySecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CashEquivalentsandMarketableSecuritiesScheduleofFairValueandAmortizedCostofCashEquivalentsandMarketableSecuritiesDetails", "http://lyell.com/role/FairValueMeasurementsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r125", "r126", "r128", "r129", "r130", "r131", "r132" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.", "label": "Use of Estimates, Policy [Policy Text Block]", "terseLabel": "Use of Estimates" } } }, "localname": "UseOfEstimates", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Variable Interest Entities (VIE) in which the entity does not have a controlling financial interest (as defined) and of which it is therefore not the primary beneficiary. VIEs of which the entity is not the primary beneficiary because it does not have the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and for which it does not have the obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE are not included in the consolidated financial statements of the entity.", "label": "Variable Interest Entity, Not Primary Beneficiary [Member]", "terseLabel": "Variable Interest Entity, Not Primary Beneficiary" } } }, "localname": "VariableInterestEntityNotPrimaryBeneficiaryMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/OtherInvestmentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_VariableLeaseCost": { "auth_ref": [ "r351", "r356" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.", "label": "Variable Lease, Cost", "terseLabel": "Variable lease cost" } } }, "localname": "VariableLeaseCost", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/LeasesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r107", "r114" ], "lang": { "en-us": { "role": { "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.", "label": "Weighted Average Number of Shares Outstanding, Diluted", "terseLabel": "Weighted-average shares used to compute net loss per common share, diluted (in shares)" } } }, "localname": "WeightedAverageNumberOfDilutedSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r106", "r114" ], "lang": { "en-us": { "role": { "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.", "label": "Weighted Average Number of Shares Outstanding, Basic", "terseLabel": "Weighted-average shares used to compute net loss per common share, basic (in shares)" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://lyell.com/role/CondensedConsolidatedStatementsofOperationsandComprehensiveLoss" ], "xbrltype": "sharesItemType" } }, "unitCount": 9 } }, "std_ref": { "r0": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r1": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=124429488&loc=d3e326-107755" }, "r10": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(14))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22595-107794" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794" }, "r104": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22658-107794" }, "r105": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22663-107794" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1505-109256" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1252-109256" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1278-109256" }, "r11": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(17))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "55", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e2626-109256" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1337-109256" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257" }, "r115": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257" }, "r116": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257" }, "r117": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537" }, "r118": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125512782&loc=d3e3842-109258" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125512782&loc=d3e4984-109258" }, "r12": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(27)(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r120": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "260", "URI": "http://asc.fasb.org/topic&trid=2144383" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=125520817&loc=d3e70191-108054" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=125520817&loc=d3e70229-108054" }, "r123": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592" }, "r13": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(27))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592" }, "r133": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "275", "URI": "http://asc.fasb.org/topic&trid=2134479" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r137": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r139": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r14": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(28))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "31", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "41", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599" }, "r15": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(29))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r150": { "Name": "Accounting Standards Codification", "Paragraph": "42", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=d3e5144-111524" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.E)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=122038336&loc=d3e74512-122707" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "8A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=124260329&loc=SL6284422-111562" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563" }, "r16": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=SL120269820-111563" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563" }, "r164": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "http://asc.fasb.org/topic&trid=2196928" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "321", "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "321", "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "321", "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571" }, "r17": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919272-210447" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(1)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455" }, "r179": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455" }, "r18": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(4))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922895-210455" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455" }, "r183": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456" }, "r184": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "340", "URI": "http://asc.fasb.org/extlink&oid=123353750&loc=SL49131252-203054" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r189": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r19": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r190": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r191": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r192": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "http://asc.fasb.org/topic&trid=2144648" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349" }, "r194": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "http://asc.fasb.org/topic&trid=2127136" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(i))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(ii))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii)(A))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii)(B))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r2": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760" }, "r20": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(31))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iv))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(5))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(i))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(C))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iv))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(5))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r209": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r21": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(32))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r210": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611" }, "r211": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611" }, "r212": { "Name": "Accounting Standards Codification", "Paragraph": "1I", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "69B", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "69C", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=109262497&loc=d3e20148-110875" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(CFRR 211.02)", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=122040564&loc=d3e177068-122764" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21553-112644" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r22": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(7))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644" }, "r228": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644" }, "r23": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(8))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496180-112644" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496180-112644" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644" }, "r238": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21484-112644" }, "r239": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21488-112644" }, "r24": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.1)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r240": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21506-112644" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21506-112644" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21521-112644" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21538-112644" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-04)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770" }, "r245": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "505", "URI": "http://asc.fasb.org/topic&trid=2208762" }, "r246": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044" }, "r247": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123360276&loc=SL49130533-203044" }, "r249": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045" }, "r25": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.12)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r250": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045" }, "r251": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045" }, "r252": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045" }, "r253": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046" }, "r254": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r255": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r256": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(01)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(A)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(B)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r26": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.17)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(C)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r261": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(03)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r262": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(n)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921" }, "r264": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(d)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "80", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948" }, "r266": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=123468992&loc=d3e4534-113899" }, "r267": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901" }, "r268": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901" }, "r269": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901" }, "r27": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r270": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r271": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r272": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(i)-(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r278": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r28": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19-26)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r281": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(3)-(4)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(i)-(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r286": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r287": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r288": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r289": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r29": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.2)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r290": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r291": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r292": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r293": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(iii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r294": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)(iv)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r295": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r297": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r3": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "205", "URI": "http://asc.fasb.org/topic&trid=2122149" }, "r30": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.21)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "2A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=SL79508275-113901" }, "r301": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r303": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 14.D.2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 14.F)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809" }, "r307": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=122142933&loc=d3e11149-113907" }, "r308": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=122142933&loc=d3e11178-113907" }, "r309": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "718", "URI": "http://asc.fasb.org/topic&trid=2228938" }, "r31": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.23)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r310": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "730", "URI": "http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373" }, "r311": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r312": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(3)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r313": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "808", "URI": "http://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434" }, "r314": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "808", "URI": "http://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434" }, "r315": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "808", "URI": "http://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434" }, "r316": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "808", "URI": "http://asc.fasb.org/topic&trid=5833765" }, "r317": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988" }, "r318": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988" }, "r319": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684" }, "r32": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.24)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r320": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c),(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r321": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685" }, "r322": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685" }, "r323": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "810", "URI": "http://asc.fasb.org/topic&trid=2197479" }, "r324": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(f)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123477628&loc=d3e90205-114008" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(3)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r326": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r328": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r33": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.25)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r330": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r331": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r334": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r335": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740" }, "r338": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612" }, "r339": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=123444420&loc=d3e33268-110906" }, "r34": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.28,29)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r340": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900" }, "r341": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r342": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r343": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r344": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r345": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r346": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901" }, "r347": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977" }, "r348": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977" }, "r349": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980" }, "r35": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r351": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r352": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(1)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r353": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(3)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r354": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(4)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980" }, "r355": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980" }, "r356": { "Name": "Accounting Standards Codification", "Paragraph": "53", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971" }, "r357": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/subtopic&trid=77888251" }, "r358": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "30", "Topic": "842", "URI": "http://asc.fasb.org/subtopic&trid=77888252" }, "r359": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r36": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29-30)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r360": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r361": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r362": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r363": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r364": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864" }, "r365": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864" }, "r366": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "850", "URI": "http://asc.fasb.org/topic&trid=2122745" }, "r367": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124437977&loc=d3e55792-112764" }, "r368": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765" }, "r369": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765" }, "r37": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29-31)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r370": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766" }, "r371": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662" }, "r372": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "855", "URI": "http://asc.fasb.org/topic&trid=2122774" }, "r373": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r374": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(ii)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r375": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r376": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r377": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r378": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r379": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r38": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.9)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r380": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r381": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r382": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r383": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r384": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r385": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r386": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728" }, "r387": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729" }, "r388": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r389": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r39": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226024-175313" }, "r390": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r391": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746" }, "r392": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r393": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r394": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r395": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r396": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(5)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r397": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(6)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r398": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(7)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r399": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(b)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r4": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r40": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226049-175313" }, "r400": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r401": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r402": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746" }, "r403": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "910", "URI": "http://asc.fasb.org/extlink&oid=123353855&loc=SL119991595-234733" }, "r404": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "310", "Subparagraph": "(b)", "Topic": "912", "URI": "http://asc.fasb.org/extlink&oid=123371682&loc=d3e55415-109406" }, "r405": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "730", "Topic": "912", "URI": "http://asc.fasb.org/extlink&oid=6472174&loc=d3e58812-109433" }, "r406": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 11.L)", "Topic": "924", "URI": "http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856" }, "r407": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61929-109447" }, "r408": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61929-109447" }, "r409": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62059-109447" }, "r41": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313" }, "r410": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62059-109447" }, "r411": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62395-109447" }, "r412": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62395-109447" }, "r413": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62479-109447" }, "r414": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62479-109447" }, "r415": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=SL6807758-109447" }, "r416": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=SL6807758-109447" }, "r417": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(1)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61872-109447" }, "r418": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(2)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61872-109447" }, "r419": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(11))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r42": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580" }, "r420": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r421": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(6))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r422": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.17)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r423": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(22))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r424": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r425": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(26))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r426": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(27))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r427": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.9-05(b)(2))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884" }, "r428": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123599081&loc=d3e62557-112803" }, "r429": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "360", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=124429447&loc=SL124453093-239630" }, "r43": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580" }, "r430": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "825", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123345438&loc=d3e61044-112788" }, "r431": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(12))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r432": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(3))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r433": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r434": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(25))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r435": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r436": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),19)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r437": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.1(f))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r438": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.1(f,g))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r439": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(18))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r44": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580" }, "r440": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(19))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r441": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(22))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r442": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(23))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r443": { "Name": "Accounting Standards Codification", "Paragraph": "4H", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438" }, "r444": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(d)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124506351&loc=SL117782755-158439" }, "r445": { "Name": "Accounting Standards Codification", "Paragraph": "13H", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117783719-158441" }, "r446": { "Name": "Accounting Standards Codification", "Paragraph": "29F", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117819544-158441" }, "r447": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r448": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r449": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r45": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e681-108580" }, "r450": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(i)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r451": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(ii)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r452": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(h)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r453": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(e)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124508989&loc=d3e19393-158473" }, "r454": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.6-07.1(c))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401555&loc=SL114874292-224272" }, "r455": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611133-123010" }, "r456": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r457": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r458": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r459": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580" }, "r460": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r461": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r462": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r463": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r464": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010" }, "r465": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column B)(Footnote 2))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010" }, "r466": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column C)(Footnote 2))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010" }, "r467": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column A))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r468": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column B))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r469": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column C))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580" }, "r470": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column D))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010" }, "r471": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "210", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=120413173&loc=SL116631458-115580" }, "r472": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "440", "Subparagraph": "(a)", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629" }, "r473": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "360", "Subparagraph": "(SX 210.12-28(Footnote 4))", "Topic": "970", "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024" }, "r474": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(c)", "Topic": "976", "URI": "http://asc.fasb.org/extlink&oid=6497875&loc=d3e22274-108663" }, "r475": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(b)", "Topic": "978", "URI": "http://asc.fasb.org/extlink&oid=123360121&loc=d3e27327-108691" }, "r476": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "985", "URI": "http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756" }, "r477": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b" }, "r478": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r479": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "d1-1" }, "r48": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580" }, "r480": { "Name": "Form 10-Q", "Number": "240", "Publisher": "SEC", "Section": "308", "Subsection": "a" }, "r481": { "Name": "Forms 10-K, 10-Q, 20-F", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-1" }, "r482": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(a)", "Publisher": "SEC", "Section": "1402" }, "r483": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(1)" }, "r484": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)" }, "r485": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(b)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(3)" }, "r486": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(i)" }, "r487": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(ii)" }, "r488": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(c)", "Publisher": "SEC", "Section": "1402", "Subparagraph": "(2)(iii)" }, "r489": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "405" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580" }, "r490": { "Name": "Securities Act", "Number": "7A", "Publisher": "SEC", "Section": "B", "Subsection": "2" }, "r491": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)(3)(iii)(03)", "Topic": "848" }, "r5": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e557-108580" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124507222&loc=d3e1436-108581" }, "r57": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(1))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(20))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(21))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(24))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(25))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r62": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(4))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r63": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.1(e))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.4)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r65": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.9)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3151-108585" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585" }, "r7": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6801-107765" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585" }, "r72": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586" }, "r8": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(d))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(e)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(g)(1)(ii))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(k)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(m)(1)(ii)(A))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(m)(1)(iii))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r9": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(13))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(m)(2)(ii))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04(a))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690" }, "r92": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "http://asc.fasb.org/topic&trid=2122369" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21914-107793" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21930-107793" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21711-107793" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(3)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r98": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794" } }, "version": "2.1" }