$J
JACOBS SOLUTIONS INC. Stock $j

$j Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000005298820000070 Filed on November 24, 2020

Income Statement

Concept	2020 Q4	2020	2019 Q3
Revenue	$3.520B	$13.57B	$3.393B
YoY Change	4.75%	6.51%	-18.1%
Cost Of Revenue	$2.855B	$10.98B	$2.727B
YoY Change	5.13%	7.01%	14.32%
Gross Profit	$664.9M	$2.587B	$665.5M
YoY Change	3.15%	4.43%	9.78%
Gross Profit Margin	18.89%	19.07%	19.61%
Selling, General & Admin	$642.5M	$2.051B	$480.6M
YoY Change	30.26%	-1.04%	7.9%
% of Gross Profit	96.63%	79.28%	72.22%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$47.60M	$181.7M	$43.30M
YoY Change	8.18%	7.32%	-15.76%
% of Gross Profit	7.16%	7.02%	6.51%
Operating Expenses	$642.4M	$2.051B	$480.7M
YoY Change	30.24%	-1.04%	7.93%
Operating Profit	$22.50M	$536.0M	$99.09M
YoY Change	-85.13%	32.39%	-38.4%
Interest Expense	-$12.50M	$62.21M	-$7.800M
YoY Change	-184.36%	-25.83%	-68.29%
% of Operating Profit	-55.56%	11.61%	-7.87%
Other Income/Expense, Net	$50.20M	-$94.77M	-$37.70M
YoY Change	-51.18%	75.85%	-718.03%
Pretax Income	$60.20M	$441.2M	$53.54M
YoY Change	-76.31%	25.71%	-72.94%
Income Tax	-$19.70M	$55.32M	-$12.30M
% Of Pretax Income	-32.72%	12.54%	-22.97%
Net Earnings	$82.00M	$491.8M	$142.3M
YoY Change	-68.09%	-42.0%	-479.12%
Net Earnings / Revenue	2.33%	3.63%	4.19%
Basic Earnings Per Share		$3.74	$1.06
Diluted Earnings Per Share	$624.0K	$3.71	$1.04
COMMON SHARES
Basic Shares Outstanding	129.6M shares	131.5M shares	135.5M shares
Diluted Shares Outstanding		132.7M shares

Balance Sheet

Concept	2020 Q4	2020	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.210B	$1.210B	$631.0M
YoY Change	95.48%	91.76%	-18.26%
Cash & Equivalents	$862.4M	$862.0M	$631.1M
Short-Term Investments	$348.0M	$348.0M
Other Short-Term Assets	$162.0M	$162.0M	$641.0M
YoY Change	-76.96%	-74.73%	-49.53%
Inventory
Prepaid Expenses	$162.4M		$189.4M
Receivables	$3.167B	$3.167B	$2.840B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.540B	$4.540B	$4.112B
YoY Change	3.68%	10.41%	-9.76%
LONG-TERM ASSETS
Property, Plant & Equipment	$319.4M	$896.0M	$308.1M
YoY Change	3.47%	190.91%	19.5%
Goodwill	$5.639B		$5.433B
YoY Change	3.72%		13.28%
Intangibles	$658.3M		$665.1M
YoY Change	1.99%		16.08%
Long-Term Investments
YoY Change
Other Assets	$7.495B	$621.0M	$7.043B
YoY Change	-0.24%	-21.09%	-10.07%
Total Long-Term Assets	$7.815B	$7.814B	$7.351B
YoY Change	-0.09%	6.3%	-9.13%
TOTAL ASSETS
Total Short-Term Assets	$4.540B	$4.540B	$4.112B
Total Long-Term Assets	$7.815B	$7.814B	$7.351B
Total Assets	$12.35B	$12.35B	$11.46B
YoY Change	1.26%	7.77%	-9.36%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.062B	$1.062B	$1.073B
YoY Change	2.8%	-1.03%	38.19%
Accrued Expenses	$1.250B	$1.313B	$1.387B
YoY Change	7.48%	19.58%	18.85%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$200.0M
YoY Change	-100.0%	-100.0%	6566.67%
Long-Term Debt Due	$0.00
YoY Change
Total Short-Term Liabilities	$2.942B	$2.942B	$3.074B
YoY Change	3.88%	-4.29%	-2.29%
LONG-TERM LIABILITIES
Long-Term Debt	$1.677B	$1.677B	$1.201B
YoY Change	18.52%	39.63%	-43.98%
Other Long-Term Liabilities	$1.877B	$1.877B	$1.419B
YoY Change	-0.79%	58.26%	0.5%
Total Long-Term Liabilities	$1.677B	$3.554B	$1.201B
YoY Change	18.52%	48.89%	-43.98%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.942B	$2.942B	$3.074B
Total Long-Term Liabilities	$1.677B	$3.554B	$1.201B
Total Liabilities	$4.619B	$6.539B	$4.275B
YoY Change	8.76%	13.76%	-19.19%
SHAREHOLDERS EQUITY
Retained Earnings	$4.021B		$3.939B
YoY Change	-3.02%		3.39%
Common Stock	$2.728B		$2.692B
YoY Change	-0.39%		-5.57%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$5.816B	$5.816B	$5.715B
YoY Change
Total Liabilities & Shareholders Equity	$12.35B	$12.35B	$11.46B
YoY Change	1.26%	7.77%	-9.36%

Cashflow Statement

Concept	2020 Q4	2020	2019 Q3
OPERATING ACTIVITIES
Net Income	$82.00M	$491.8M	$142.3M
YoY Change	-68.09%	-42.0%	-479.12%
Depreciation, Depletion And Amortization	$47.60M	$181.7M	$43.30M
YoY Change	8.18%	7.32%	-15.76%
Cash From Operating Activities	$432.3M	$806.8M	-$146.1M
YoY Change	-415.12%	-320.19%	-168.85%
INVESTING ACTIVITIES
Capital Expenditures	-$29.50M	$118.3M	-$29.30M
YoY Change	-232.52%	-13.02%	-6.98%
Acquisitions
YoY Change
Other Investing Activities	-$6.900M	-$310.8M	-$300.0K
YoY Change	-42.5%	-113.58%	-94.64%
Cash From Investing Activities	-$36.40M	-$429.1M	-$29.60M
YoY Change	6.25%	-119.94%	-20.22%
FINANCING ACTIVITIES
Cash Dividend Paid		$144.0M
YoY Change		35.31%
Common Stock Issuance & Retirement, Net		$300.0M
YoY Change		-61.96%
Debt Paid & Issued, Net		$2.521B
YoY Change		-36.92%
Cash From Financing Activities	-580.8M	-$208.3M	-178.0M
YoY Change	-448.07%	-89.42%	-9.83%
NET CHANGE
Cash From Operating Activities	432.3M	$806.8M	-146.1M
Cash From Investing Activities	-36.40M	-$429.1M	-29.60M
Cash From Financing Activities	-580.8M	-$208.3M	-178.0M
Net Change In Cash	-184.9M	$231.4M	-353.7M
YoY Change	1459.55%	-242.56%	1486.1%
FREE CASH FLOW
Cash From Operating Activities	$432.3M	$806.8M	-$146.1M
Capital Expenditures	-$29.50M	$118.3M	-$29.30M
Free Cash Flow	$461.8M	$688.6M	-$116.8M
YoY Change	-389.63%	-237.05%	-147.93%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000052988
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--10-02
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CY2020	dei	Amendment Flag AmendmentFlag	false
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CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-10-02
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	1-7463
CY2020	dei	Entity Registrant Name EntityRegistrantName	Jacobs Engineering Group Inc.
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	75334000	USD
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-4081636
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	1999 Bryan Street
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 1200
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
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CY2020	dei	Security12b Title Security12bTitle	Common Stock
CY2020	dei	Trading Symbol TradingSymbol	J
CY2020	dei	Security Exchange Name SecurityExchangeName	NYSE
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CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	2195000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	177000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	137984000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	557019000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	167616000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	491845000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	847979000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	163431000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.69
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.11
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.03
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.05
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	4.03
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.21
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.74
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.14
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.67
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.09
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.03
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.04
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	4.00
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.21
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.08
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
CY2020	us-gaap	Profit Loss ProfitLoss	523867000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	873219000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	173142000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	64052000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	15972000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-109877000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-21883000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	1369000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	118000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	157632000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	27231000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-33165000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-140291000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-136990000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	3722000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-7285000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	568000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-859000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	13357000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	30750000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-17058000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-16920000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-30182000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	16199000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-16245000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-110109000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-153189000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	507622000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	763110000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	19953000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	32022000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	25240000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9711000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	475600000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	737870000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10242000	USD
CY2017Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4487351000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	173142000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-109877000	USD
CY2018	jec	Other Comprehensive Income Loss Defined Benefit Plan After Reclassification Adjustment And Disposals Tax OtherComprehensiveIncomeLossDefinedBenefitPlanAfterReclassificationAdjustmentAndDisposalsTax	17058000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	34129000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-859000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	977000	USD
CY2018	jec	Noncontrolling Interest Increase Decrease From Business Combination NoncontrollingInterestIncreaseDecreaseFromBusinessCombination	37146000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	85608000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4686000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	79242000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1403777000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2981000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5944354000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	873219000	USD
CY2019	jec	Dispositionof Business Deferred Taxes DispositionofBusinessDeferredTaxes	5402000	USD
CY2019	jec	Jec Dispositionof Business Jec_DispositionofBusiness	67037000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	10825000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-84456000	USD
CY2019	jec	Other Comprehensive Income Loss Defined Benefit Plan After Reclassification Adjustment And Disposals Tax OtherComprehensiveIncomeLossDefinedBenefitPlanAfterReclassificationAdjustmentAndDisposalsTax	25348000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	139218000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	568000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	801000	USD
CY2019	jec	Noncontrolling Interest Increase Decrease From Business Combination NoncontrollingInterestIncreaseDecreaseFromBusinessCombination	-1113000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	92980000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	15555000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	69137000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	38317000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	853676000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5768658000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	523867000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	3722000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	60330000	USD
CY2020	jec	Other Comprehensive Income Loss Defined Benefit Plan After Reclassification Adjustment And Disposals Tax OtherComprehensiveIncomeLossDefinedBenefitPlanAfterReclassificationAdjustmentAndDisposalsTax	-13357000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	61977000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-7285000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-14598000	USD
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	99921000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	41032000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	48150000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	9441000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	337251000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5855667000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	523867000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	873219000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	173142000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	91070000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	90171000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	117856000	USD
CY2020	jec	Disposal Group Including Discontinued Operations Amortization Of Intangible Assets DisposalGroupIncludingDiscontinuedOperationsAmortizationOfIntangibleAssets	90563000	USD
CY2019	jec	Disposal Group Including Discontinued Operations Amortization Of Intangible Assets DisposalGroupIncludingDiscontinuedOperationsAmortizationOfIntangibleAssets	79098000	USD
CY2018	jec	Disposal Group Including Discontinued Operations Amortization Of Intangible Assets DisposalGroupIncludingDiscontinuedOperationsAmortizationOfIntangibleAssets	80731000	USD
CY2020	jec	Gain Losson Saleof Businessand Investments GainLossonSaleofBusinessandInvestments	110236000	USD
CY2019	jec	Gain Losson Saleof Businessand Investments GainLossonSaleofBusinessandInvestments	935110000	USD
CY2018	jec	Gain Losson Saleof Businessand Investments GainLossonSaleofBusinessandInvestments	0	USD
CY2020	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-9608000	USD
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-20967000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-103623000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-78108000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	48150000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	69137000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	79242000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-9172000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8784000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2639000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-766000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-6222000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-17491000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	162238000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	us-gaap	Pension Expense PensionExpense	4598000	USD
CY2019	us-gaap	Pension Expense PensionExpense	-33087000	USD
CY2018	us-gaap	Pension Expense PensionExpense	5414000	USD
CY2020	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-82275000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	105939000	USD
CY2018	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-288126000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	107784000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	67894000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	428930000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	27280000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	13117000	USD
CY2020	us-gaap	Increase Decrease In Other Deferred Liability IncreaseDecreaseInOtherDeferredLiability	-64390000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	19134000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-92838000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	295146000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	183057000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	35194000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-294995000	USD
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	68970000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-27849000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-305716000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-37746000	USD
CY2019	us-gaap	Increase Decrease In Other Deferred Liability IncreaseDecreaseInOtherDeferredLiability	-106256000	USD
CY2018	us-gaap	Increase Decrease In Other Deferred Liability IncreaseDecreaseInOtherDeferredLiability	-79280000	USD
CY2020	jec	Increase Decrease In Noncurrent Assets And Other Net IncreaseDecreaseInNoncurrentAssetsAndOtherNet	-85710000	USD
CY2019	jec	Increase Decrease In Noncurrent Assets And Other Net IncreaseDecreaseInNoncurrentAssetsAndOtherNet	-3753000	USD
CY2018	jec	Increase Decrease In Noncurrent Assets And Other Net IncreaseDecreaseInNoncurrentAssetsAndOtherNet	-13885000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	806849000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-366436000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	481152000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	118269000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	135977000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	94884000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	96000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	7177000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3293000	USD
CY2020	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	12278000	USD
CY2019	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	8761000	USD
CY2018	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	5416000	USD
CY2020	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	293580000	USD
CY2019	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	575110000	USD
CY2018	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	1488336000	USD
CY2020	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2019	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	64708000	USD
CY2018	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2020	us-gaap	Payments For Proceeds From Previous Acquisition PaymentsForProceedsFromPreviousAcquisition	5061000	USD
CY2019	us-gaap	Payments For Proceeds From Previous Acquisition PaymentsForProceedsFromPreviousAcquisition	-2801425000	USD
CY2018	us-gaap	Payments For Proceeds From Previous Acquisition PaymentsForProceedsFromPreviousAcquisition	-7736000	USD
CY2020	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	0	USD
CY2019	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	1113000	USD
CY2018	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-429092000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2152349000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1577607000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2986661000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2782193000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	5784355000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2521467000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3996970000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	4572182000	USD
CY2020	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	78000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	200001000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	712000	USD
CY2020	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	200008000	USD
CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	28566000	USD
CY2018	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	3391000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1807000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3915000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	37235000	USD
CY2020	jec	Revenue From Fixed Price Contracts Percentage RevenueFromFixedPriceContractsPercentage	0.24
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	64958000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	53584000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	337251000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	853676000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2981000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	27794000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	26641000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	31108000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	143962000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	106396000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	86569000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-208315000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1969012000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1142420000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	61914000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	20809000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-26758000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	862424000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	231356000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-162290000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	19207000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	631068000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	793358000	USD
CY2017Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	774151000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	631068000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	793358000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	0	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	0	USD
CY2017Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	158488000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	862424000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	631068000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	634870000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020	jec	Revenue From Cost Reimbursable Contracts Percentage RevenueFromCostReimbursableContractsPercentage	0.76
CY2019	jec	Revenue From Cost Reimbursable Contracts Percentage RevenueFromCostReimbursableContractsPercentage	0.76
CY2018	jec	Revenue From Cost Reimbursable Contracts Percentage RevenueFromCostReimbursableContractsPercentage	0.74
CY2019	jec	Revenue From Fixed Price Contracts Percentage RevenueFromFixedPriceContractsPercentage	0.24
CY2018	jec	Revenue From Fixed Price Contracts Percentage RevenueFromFixedPriceContractsPercentage	0.26
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Jacobs Chronos',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;text-decoration:underline">Concentrations of Credit Risk</span></div><div style="margin-top:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Jacobs Chronos',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our cash balances and cash equivalents are maintained in accounts held by major banks and financial institutions located in North America, South America, Europe, the Middle East, India, Australia, Africa and Asia. In the normal course of business, and consistent with industry practices, we grant credit to our clients without requiring collateral. Concentrations of credit risk is the risk that, if we extend a significant amount of credit to clients in a specific geographic area or industry, we may experience disproportionately high levels of default if those clients are adversely affected by factors particular to their geographic area or industry. Concentrations of credit risk relative to trade receivables are limited due to our diverse client base, which includes the U.S. federal government and multi-national corporations operating in a broad range of industries and geographic areas. Additionally, in order to mitigate credit risk, we continually evaluate the credit worthiness of our major commercial clients.</span></div>
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	767000000.0	USD
CY2019Q3	jec	Operating Lease Reclassification Lease Incentives And Deferred Rent OperatingLeaseReclassificationLeaseIncentivesAndDeferredRent	82300000	USD
CY2019Q3	jec	Business Exit Cost Lease Cease Use Liabilities BusinessExitCostLeaseCeaseUseLiabilities	141400000	USD
CY2019Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	180700000	USD
CY2019Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	810100000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Jacobs Chronos',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;text-decoration:underline">Use of Estimates and Assumptions</span></div><div style="margin-top:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Jacobs Chronos',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with U.S. GAAP requires us to employ estimates and make assumptions that affect the reported amounts of certain assets and liabilities; the revenues and expenses reported for the periods covered by the financial statements; and certain amounts disclosed in these Notes to the Consolidated Financial Statements. Although such estimates and assumptions are based on management’s most recent assessment of the underlying facts and circumstances utilizing the most current information available and past experience, actual results could differ significantly from those estimates and assumptions. Our estimates, judgments and assumptions are evaluated periodically and adjusted accordingly.</span></div>
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	13566975000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	12737868000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	10579773000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	410000000.0	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	350300000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	14600000000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.50
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.50
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	353861000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	290960000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-4185000	USD
CY2020	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	-72000	USD
CY2019	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	-415000	USD
CY2018	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	0	USD
CY2020	us-gaap	Undistributed Earnings Loss From Continuing Operations Available To Common Shareholders Basic UndistributedEarningsLossFromContinuingOperationsAvailableToCommonShareholdersBasic	353789000	USD
CY2019	us-gaap	Undistributed Earnings Loss From Continuing Operations Available To Common Shareholders Basic UndistributedEarningsLossFromContinuingOperationsAvailableToCommonShareholdersBasic	290545000	USD
CY2018	us-gaap	Undistributed Earnings Loss From Continuing Operations Available To Common Shareholders Basic UndistributedEarningsLossFromContinuingOperationsAvailableToCommonShareholdersBasic	-4185000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	137984000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	557019000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	167616000	USD
CY2020	us-gaap	Undistributed Discontinued Operation Earnings Loss Basic UndistributedDiscontinuedOperationEarningsLossBasic	-28000	USD
CY2019	us-gaap	Undistributed Discontinued Operation Earnings Loss Basic UndistributedDiscontinuedOperationEarningsLossBasic	-795000	USD
CY2018	us-gaap	Undistributed Discontinued Operation Earnings Loss Basic UndistributedDiscontinuedOperationEarningsLossBasic	-808000	USD
CY2020	us-gaap	Undistributed Earnings Loss From Discontinued Operations Available To Common Shareholders Basic UndistributedEarningsLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	137956000	USD
CY2019	us-gaap	Undistributed Earnings Loss From Discontinued Operations Available To Common Shareholders Basic UndistributedEarningsLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	556224000	USD
CY2018	us-gaap	Undistributed Earnings Loss From Discontinued Operations Available To Common Shareholders Basic UndistributedEarningsLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	166808000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	491745000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	846769000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	162623000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	131541000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	138104000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	138182000	shares
CY2020	jec	Weighted Average Number Diluted Shares Allocated To Participating Securities WeightedAverageNumberDilutedSharesAllocatedToParticipatingSecurities	27000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1299000	shares
CY2019	jec	Weighted Average Number Diluted Shares Allocated To Participating Securities WeightedAverageNumberDilutedSharesAllocatedToParticipatingSecurities	197000	shares
CY2018	jec	Weighted Average Number Diluted Shares Allocated To Participating Securities WeightedAverageNumberDilutedSharesAllocatedToParticipatingSecurities	646000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	131514000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	137907000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	137536000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1207000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	132721000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139206000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	137536000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.69
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.11
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.03
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.05
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	4.03
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.21
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.74
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.14
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.04
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000.0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.67
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.09
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.03
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	4.00
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.21
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.08
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1176	shares
CY2019Q1	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	500000000	USD
CY2019	jec	Number Of Financial Institutions NumberOfFinancialInstitutions	2	financial_institution
CY2019Q2	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	250000000	USD
CY2019Q4	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	250000000	USD
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000	USD
CY2019Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	81.68
CY2019Q1	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	4129003000	shares
CY2019Q1	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	4129003000	shares
CY2020Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	57900000	USD
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000.0	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.19
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.19
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.19
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.19
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.17
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.17
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.17
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.17
CY2019Q3	us-gaap	Goodwill Goodwill	5433000000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	206000000	USD
CY2020	jec	Goodwill Adjustments During Period GoodwillAdjustmentsDuringPeriod	2000000	USD
CY2020	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	6000000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-4000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	5639000000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	665076000	USD
CY2020	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	80010000	USD
CY2020	us-gaap	Finite Lived Intangible Assets Purchase Accounting Adjustments FiniteLivedIntangibleAssetsPurchaseAccountingAdjustments	-668000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	90563000	USD
CY2020	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	-4485000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	658340000	USD
CY2020	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P8Y
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	90700000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	89700000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	89400000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	89200000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	88800000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	210500000	USD
CY2020Q4	jec	Amount After Amortization Of Assets Excluding Financial Assets And Goodwill AmountAfterAmortizationOfAssetsExcludingFinancialAssetsAndGoodwill	658300000	USD
CY2020Q4	jec	Non Project Related Accruals NonProjectRelatedAccruals	237204000	USD
CY2019Q3	jec	Non Project Related Accruals NonProjectRelatedAccruals	258312000	USD
CY2020Q4	us-gaap	Billed Contract Receivables BilledContractReceivables	1294204000	USD
CY2019Q3	us-gaap	Billed Contract Receivables BilledContractReceivables	1222339000	USD
CY2020Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	1449184000	USD
CY2019Q3	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	1216028000	USD
CY2020Q4	us-gaap	Deposit Contracts Assets DepositContractsAssets	423922000	USD
CY2019Q3	us-gaap	Deposit Contracts Assets DepositContractsAssets	401842000	USD
CY2020Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	3167310000	USD
CY2019Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	2840209000	USD
CY2020Q4	us-gaap	Due From Other Related Parties Current DueFromOtherRelatedPartiesCurrent	600207000	USD
CY2019Q3	us-gaap	Due From Other Related Parties Current DueFromOtherRelatedPartiesCurrent	630975000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	787258000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	804931000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	467887000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	496788000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	319371000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	308143000	USD
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	319371000	USD
CY2019Q3	us-gaap	Noncurrent Assets NoncurrentAssets	308143000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	746637000	USD
CY2019Q3	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	677313000	USD
CY2020Q4	jec	Project Related Accruals ProjectRelatedAccruals	60531000	USD
CY2019Q3	jec	Project Related Accruals ProjectRelatedAccruals	58835000	USD
CY2020Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	25524000	USD
CY2019Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	23439000	USD
CY2020Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	0	USD
CY2020Q4	jec	Insurance Liabilities InsuranceLiabilities	75267000	USD
CY2019Q3	jec	Insurance Liabilities InsuranceLiabilities	83968000	USD
CY2020Q4	jec	Sales And Other Similar Taxes SalesAndOtherSimilarTaxes	104720000	USD
CY2019Q3	jec	Sales And Other Similar Taxes SalesAndOtherSimilarTaxes	34390000	USD
CY2020Q4	us-gaap	Lease Incentive Payable Current LeaseIncentivePayableCurrent	0	USD
CY2019Q3	us-gaap	Lease Incentive Payable Current LeaseIncentivePayableCurrent	68914000	USD
CY2019Q3	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	179208000	USD
CY2020Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2019Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	2573000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1249883000	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1386952000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	49829000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-37030000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25549000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-5021000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6639000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1546000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	41616000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	57156000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	20858000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-435000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	89344000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	69141000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	53485000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6607000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	230358000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7133000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	20408000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	17318000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4863000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-79405000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	8815000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	55755000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-52390000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	256491000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	55320000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36954000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	325632000	USD
CY2018Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Measurement Period Adjustment Income Tax Expense Benefit TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentIncomeTaxExpenseBenefit	144400000	USD
CY2019	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Deferred Tax Asset Income Tax Expense TaxCutsAndJobsActOf2017ChangeInTaxRateDeferredTaxAssetIncomeTaxExpense	24400000	USD
CY2020	jec	Income Tax Expense Differential Losses Netted Against Uncertain Tax Positions IncomeTaxExpenseDifferentialLossesNettedAgainstUncertainTaxPositions	14300000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	55949000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	56854000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	8205000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	140578000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	153257000	USD
CY2020Q4	jec	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOtherEmployeeBenefits	132613000	USD
CY2019Q3	jec	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOtherEmployeeBenefits	149276000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	197987000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	241033000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	87259000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	84553000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	6808000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	13881000	USD
CY2020Q4	jec	Deferred Tax Assets Deferred Income Expense DeferredTaxAssetsDeferredIncomeExpense	70733000	USD
CY2019Q3	jec	Deferred Tax Assets Deferred Income Expense DeferredTaxAssetsDeferredIncomeExpense	51579000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	49848000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	23204000	USD
CY2020Q4	jec	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	154979000	USD
CY2020Q4	jec	Deferred Tax Assets Deferred Rent DeferredTaxAssetsDeferredRent	0	USD
CY2019Q3	jec	Deferred Tax Assets Deferred Rent DeferredTaxAssetsDeferredRent	21847000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	11974000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	627572000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	497175000	USD
CY2020Q4	jec	Deferred Tax Liabilities Depreciation And Amortization DeferredTaxLiabilitiesDepreciationAndAmortization	240097000	USD
CY2019Q3	jec	Deferred Tax Liabilities Depreciation And Amortization DeferredTaxLiabilitiesDepreciationAndAmortization	177002000	USD
CY2020Q4	jec	Deferred Tax Assets Lease Right Of Use Assets DeferredTaxAssetsLeaseRightOfUseAssets	89824000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	17295000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	29761000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	66082000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6593000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8890000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	419891000	USD
CY2019Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	215653000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	207681000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	281522000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	140600000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	153300000	USD
CY2020	jec	Valuation Allowance Deferred Tax Asset Increase Decrease Over Period ValuationAllowanceDeferredTaxAssetIncreaseDecreaseOverPeriod	-12700000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	198000000.0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	241000000.0	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	10200000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	7900000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	2200000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	92652000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	73701000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	81421000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.246
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	7254000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.016
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	10183000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	15772000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.048
CY2020	jec	Income Tax Reconciliation Exclusion Of Tax On Non Controlling Interests IncomeTaxReconciliationExclusionOfTaxOnNonControllingInterests	-6622000	USD
CY2020	jec	Effective Income Tax Rate Reconciliation Exclusion Of Tax On Non Controlling Interests EffectiveIncomeTaxRateReconciliationExclusionOfTaxOnNonControllingInterests	-0.015
CY2019	jec	Income Tax Reconciliation Exclusion Of Tax On Non Controlling Interests IncomeTaxReconciliationExclusionOfTaxOnNonControllingInterests	-4839000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Exclusion Of Tax On Non Controlling Interests EffectiveIncomeTaxRateReconciliationExclusionOfTaxOnNonControllingInterests	-0.014
CY2018	jec	Income Tax Reconciliation Exclusion Of Tax On Non Controlling Interests IncomeTaxReconciliationExclusionOfTaxOnNonControllingInterests	-2389000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Exclusion Of Tax On Non Controlling Interests EffectiveIncomeTaxRateReconciliationExclusionOfTaxOnNonControllingInterests	-0.007
CY2020	jec	Income Tax Reconciliation Difference In Tax Rates Of Foreign Operations IncomeTaxReconciliationDifferenceInTaxRatesOfForeignOperations	-6267000	USD
CY2020	jec	Effective Income Tax Rate Reconciliation Difference In Tax Rates Of Foreign Operations EffectiveIncomeTaxRateReconciliationDifferenceInTaxRatesOfForeignOperations	-0.014
CY2019	jec	Income Tax Reconciliation Difference In Tax Rates Of Foreign Operations IncomeTaxReconciliationDifferenceInTaxRatesOfForeignOperations	1083000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Difference In Tax Rates Of Foreign Operations EffectiveIncomeTaxRateReconciliationDifferenceInTaxRatesOfForeignOperations	0.003
CY2018	jec	Income Tax Reconciliation Difference In Tax Rates Of Foreign Operations IncomeTaxReconciliationDifferenceInTaxRatesOfForeignOperations	2815000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Difference In Tax Rates Of Foreign Operations EffectiveIncomeTaxRateReconciliationDifferenceInTaxRatesOfForeignOperations	0.009
CY2020	jec	Income Tax Reconciliation Benefit From Foreign Valuation Allowance Release IncomeTaxReconciliationBenefitFromForeignValuationAllowanceRelease	-16861000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Benefit From Foreign Valuation Allowance Release EffectiveIncomeTaxRateReconciliationBenefitFromForeignValuationAllowanceRelease	-0.083
CY2020	jec	Effective Income Tax Rate Reconciliation Benefit From Foreign Valuation Allowance Release EffectiveIncomeTaxRateReconciliationBenefitFromForeignValuationAllowanceRelease	-0.038
CY2019	jec	Income Tax Reconciliation Benefit From Foreign Valuation Allowance Release IncomeTaxReconciliationBenefitFromForeignValuationAllowanceRelease	-29125000	USD
CY2018	jec	Income Tax Reconciliation Benefit From Foreign Valuation Allowance Release IncomeTaxReconciliationBenefitFromForeignValuationAllowanceRelease	-5088000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Benefit From Foreign Valuation Allowance Release EffectiveIncomeTaxRateReconciliationBenefitFromForeignValuationAllowanceRelease	-0.015
CY2020	jec	Income Tax Reconciliation Us Tax Cost Of Foreign Operations IncomeTaxReconciliationUSTaxCostOfForeignOperations	42992000	USD
CY2020	jec	Effective Income Tax Rate Reconciliation Nontaxable Income From Foreign Affiliate EffectiveIncomeTaxRateReconciliationNontaxableIncomeFromForeignAffiliate	0.097
CY2019	jec	Income Tax Reconciliation Us Tax Cost Of Foreign Operations IncomeTaxReconciliationUSTaxCostOfForeignOperations	-17760000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Us Tax Cost Of Foreign Operations EffectiveIncomeTaxRateReconciliationUSTaxCostOfForeignOperations	-0.051
CY2018	jec	Income Tax Reconciliation Us Tax Cost Of Foreign Operations IncomeTaxReconciliationUSTaxCostOfForeignOperations	4030000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Us Tax Cost Of Foreign Operations EffectiveIncomeTaxRateReconciliationUSTaxCostOfForeignOperations	0.012
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	19864000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.045
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-45802000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.131
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1757000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.006
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	26471000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0.060
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	15682000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0.045
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	21735000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0.066
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-6811000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.015
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2020	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Amount	0	USD
CY2020	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Percent	0
CY2019	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Amount	-36674000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Percent	-0.104
CY2018	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Amount	-155756000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Percent	-0.471
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-207000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.001
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	104221000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.315
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-11338000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.026
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-6883000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.020
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-1402000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.004
CY2020	jec	Income Tax Reconciliation Irs One Seven Nine D Deduction IncomeTaxReconciliationIRSOneSevenNineDDeduction	-7267000	USD
CY2020	jec	Effective Income Tax Rate Reconciliation Irs One Seven Nine D Deduction EffectiveIncomeTaxRateReconciliationIRSOneSevenNineDDeduction	-0.016
CY2019	jec	Income Tax Reconciliation Irs One Seven Nine D Deduction IncomeTaxReconciliationIRSOneSevenNineDDeduction	-2957000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-4938000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.014
CY2019	jec	Effective Income Tax Rate Reconciliation Irs One Seven Nine D Deduction EffectiveIncomeTaxRateReconciliationIRSOneSevenNineDDeduction	-0.008
CY2018	jec	Income Tax Reconciliation Irs One Seven Nine D Deduction IncomeTaxReconciliationIRSOneSevenNineDDeduction	-4557000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Irs One Seven Nine D Deduction EffectiveIncomeTaxRateReconciliationIRSOneSevenNineDDeduction	-0.014
CY2020	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Amount EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationAmount	5081000	USD
CY2020	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Percent EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationPercent	0.012
CY2019	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Amount EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationAmount	5568000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Percent EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationPercent	0.016
CY2018	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Amount EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationAmount	1510000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Percent EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationPercent	0.005
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-10234000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.023
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-7864000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.022
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-2158000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.007
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-788000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2564000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	104355000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	179140000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.008
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-13208000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.030
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-10191000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.028
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-7769000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.024
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	55320000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.125
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36954000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.105
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	325632000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.984
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	39800000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	291700000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	44300000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	441203000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	350959000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	330981000	USD
CY2020	jec	Tax Cuts And Jobs Act Of2017 Provisional Information Repatriationof Foreign Earnings Income Tax Expense TaxCutsAndJobsActOf2017ProvisionalInformationRepatriationofForeignEarningsIncomeTaxExpense	16200000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	86200000	USD
CY2020Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	40400000	USD
CY2019Q3	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	51100000	USD
CY2020Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	5500000	USD
CY2017Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	38580000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Acquisition UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition	31004000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	179140000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	137912000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1064000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	7455000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	9780000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	7472000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1994000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	5561000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	6695000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	49849000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	8962000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3712000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3381000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3731000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	102484000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	104355000	USD
CY2018	us-gaap	Interest Paid InterestPaid	68467000	USD
CY2020Q4	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	71100000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1679000	USD
CY2019Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	2535000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1676941000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1201245000	USD
CY2020	us-gaap	Interest Paid InterestPaid	58257000	USD
CY2019	us-gaap	Interest Paid InterestPaid	81582000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	169967000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	35083000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	14719000	USD
CY2020	us-gaap	Lease Cost LeaseCost	190331000	USD
CY2020	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	195345000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	66761000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.027
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	184967000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	95164000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	899514000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	163166000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	144668000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	127472000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	107866000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	266539000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	994678000	USD
CY2020Q4	jec	Employee Right To Purchase Stock At Discount Rate EmployeeRightToPurchaseStockAtDiscountRate	0.05
CY2020	jec	Aggregate Purchase Price Paid For Shares Sold AggregatePurchasePricePaidForSharesSold	27812601	USD
CY2019	jec	Aggregate Purchase Price Paid For Shares Sold AggregatePurchasePricePaidForSharesSold	27295425	USD
CY2018	jec	Aggregate Purchase Price Paid For Shares Sold AggregatePurchasePricePaidForSharesSold	23831467	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	30950000	shares
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	5632447	shares
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	706489	shares
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	4445000	USD
CY2020Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	194933000	USD
CY2019Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	219948000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	4925958	shares
CY2018	jec	Aggregate Number Of Shares Sold AggregateNumberOfSharesSold	394304	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	5220013	shares
CY2020	jec	Aggregate Number Of Shares Sold AggregateNumberOfSharesSold	333078	shares
CY2019	jec	Aggregate Number Of Shares Sold AggregateNumberOfSharesSold	389423	shares
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2516825	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.53
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	46.93
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	46.19
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	636019	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	114047	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	52.26
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1766759	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	828529	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	45.63
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	11624	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	42.10
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	926606	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.48
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	212467	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	44.05
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	7650	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	45.31
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	706489	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.91
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	9400000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	9986000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	27720000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	13931000	USD
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	34100000	USD
CY2020	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	32.51
CY2020	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	60.43
CY2019	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	32.51
CY2019	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	60.43
CY2018	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	32.51
CY2018	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	60.43
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	706489	shares
CY2019Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	860114	shares
CY2018Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	1557900	shares
CY2020	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeLowerRangeLimit	37.03
CY2020	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeUpperRangeLimit	60.08
CY2019	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeLowerRangeLimit	36.88
CY2019	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeUpperRangeLimit	60.43
CY2018	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeLowerRangeLimit	35.93
CY2018	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeUpperRangeLimit	61.26
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.91
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	706489	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	45.91
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	706489	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y10M17D
CY2020	jec	Defined Contribution Plan Savings Plans Contributions DefinedContributionPlanSavingsPlansContributions	91833000	USD
CY2019	jec	Defined Contribution Plan Savings Plans Contributions DefinedContributionPlanSavingsPlansContributions	114006000	USD
CY2018	jec	Defined Contribution Plan Savings Plans Contributions DefinedContributionPlanSavingsPlansContributions	113135000	USD
CY2020	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	203000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	2395000	USD
CY2019Q3	us-gaap	Restructuring Reserve RestructuringReserve	162702000	USD
CY2020	us-gaap	Depreciation And Amortization Discontinued Operations DepreciationAndAmortizationDiscontinuedOperations	90600000	USD
CY2020	jec	Restructuring Reserve Increase From Business Acquisition RestructuringReserveIncreaseFromBusinessAcquisition	116797000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	324183000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	317234000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	52854000	USD
CY2020Q4	us-gaap	Restructuring And Related Cost Cost Incurred To Date1 RestructuringAndRelatedCostCostIncurredToDate1	801924000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	13566975000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	12737868000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	10579773000	USD
CY2020	jec	Restructuring And Other Charges RestructuringAndOtherCharges	327413000	USD
CY2019	jec	Restructuring And Other Charges RestructuringAndOtherCharges	355235000	USD
CY2018	jec	Restructuring And Other Charges RestructuringAndOtherCharges	234387000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	535973000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	404851000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	387443000	USD
CY2020	jec	Other Nonoperating Income Expense Excluding Disposal Group Not Discontinued Operation Gain Loss On Disposal OtherNonoperatingIncomeExpenseExcludingDisposalGroupNotDiscontinuedOperationGainLossOnDisposal	-94770000	USD
CY2019	jec	Other Nonoperating Income Expense Excluding Disposal Group Not Discontinued Operation Gain Loss On Disposal OtherNonoperatingIncomeExpenseExcludingDisposalGroupNotDiscontinuedOperationGainLossOnDisposal	-53892000	USD
CY2018	jec	Other Nonoperating Income Expense Excluding Disposal Group Not Discontinued Operation Gain Loss On Disposal OtherNonoperatingIncomeExpenseExcludingDisposalGroupNotDiscontinuedOperationGainLossOnDisposal	-56462000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	441203000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	350959000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	330981000	USD
CY2019	us-gaap	Disposal Group Including Discontinued Operation Other Expense DisposalGroupIncludingDiscontinuedOperationOtherExpense	14800000	USD
CY2018	us-gaap	Disposal Group Including Discontinued Operation Other Expense DisposalGroupIncludingDiscontinuedOperationOtherExpense	25600000	USD
CY2019	us-gaap	Depreciation And Amortization Discontinued Operations DepreciationAndAmortizationDiscontinuedOperations	79100000	USD
CY2018	us-gaap	Depreciation And Amortization Discontinued Operations DepreciationAndAmortizationDiscontinuedOperations	68100000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3360049000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3427180000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3260057000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3519689000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	13566975000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	151345000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	167778000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	194376000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	22474000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	535973000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	254169000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-176805000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	303681000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	60158000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	441203000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	185680000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-115683000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	236007000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	79879000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	385883000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	179423000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-121967000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	226886000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	69519000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	353861000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	257010000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-92087000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	244929000	USD
	us-gaap	Net Income Loss NetIncomeLoss	81993000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	491845000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.35
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.92
CY2020Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.74
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.53
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.69
CY2019Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.58
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.23
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.14
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.10
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.05
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.69
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.88
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.74
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.33
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.92
CY2020Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.73
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.53
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.67
CY2019Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.58
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.23
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.14
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.09
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.04
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.91
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.69
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3083788000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3091596000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3169622000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3392862000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	12737868000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	113130000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	102681000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	89954000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	99086000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	404851000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	92191000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	111832000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	93399000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	53537000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	350959000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	69433000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	119779000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	95380000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	29413000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	314005000	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.42
CY2018Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	64894000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	114755000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	89365000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	21946000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	290960000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	124296000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	56917000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	524442000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	142324000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	847979000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.45
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.83
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.65
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.16
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.11
CY2018Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.42
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	4.03
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	3.18
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.89
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.83
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.14
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.45
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.82
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.65
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.16
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.09
CY2018Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.41
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.41
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	3.15
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.88
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	4.00
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.86
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.41
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.80
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.08
CY2019Q4	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	-0.13
CY2020Q1	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	2.31
CY2020Q2	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	-0.47
	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	1.10
CY2018Q4	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	0.33
CY2019Q1	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	0.36
CY2019Q2	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	0.75
CY2019Q3	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	1.32
CY2019Q3	us-gaap	Tax Cuts And Jobs Act Of2017 Measurement Period Adjustment Income Tax Expense Benefit TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentIncomeTaxExpenseBenefit	89700000	USD

Files In Submission

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$J
JACOBS SOLUTIONS INC. Stock $j

2020 Q4 Form 10-K Financial Statement

#000005298820000070 Filed on November 24, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$J JACOBS SOLUTIONS INC. Stock $j

2020 Q4 Form 10-K Financial Statement

#000005298820000070 Filed on November 24, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$J
JACOBS SOLUTIONS INC. Stock $j