$J
JACOBS SOLUTIONS INC. Stock $j

$j Overview Financials Valuation SEC Filings Company Website

2019 Q3 Form 10-K Financial Statement

#000005298819000069 Filed on November 25, 2019

Income Statement

Concept	2019 Q3	2019	2018 Q4
Revenue	$3.393B	$12.74B	$3.084B
YoY Change	-18.1%	-14.99%	12.13%
Cost Of Revenue	$2.727B	$10.26B	$2.515B
YoY Change	14.32%	21.85%	74.44%
Gross Profit	$665.5M	$2.477B	$568.5M
YoY Change	9.78%	14.75%	66.19%
Gross Profit Margin	19.61%	19.45%	18.44%
Selling, General & Admin	$480.6M	$2.072B	$455.4M
YoY Change	7.9%	17.0%	31.33%
% of Gross Profit	72.22%	83.66%	80.1%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$43.30M	$169.3M	$39.60M
YoY Change	-15.76%	-14.75%	0.25%
% of Gross Profit	6.51%	6.83%	6.97%
Operating Expenses	$480.7M	$2.072B	$455.4M
YoY Change	7.93%	17.0%	31.33%
Operating Profit	$99.09M	$404.9M	$113.1M
YoY Change	-38.4%	4.49%	-2522.48%
Interest Expense	-$7.800M	$83.87M	$25.33M
YoY Change	-68.29%	9.26%	257.09%
% of Operating Profit	-7.87%	20.72%	22.39%
Other Income/Expense, Net	-$37.70M	-$53.89M	-$20.94M
YoY Change	-718.03%	-4.55%	929.96%
Pretax Income	$53.54M	$351.0M	$92.19M
YoY Change	-72.94%	6.04%	119.94%
Income Tax	-$12.30M	$36.95M	$22.80M
% Of Pretax Income	-22.97%	10.53%	24.73%
Net Earnings	$142.3M	$848.0M	$124.3M
YoY Change	-479.12%	418.86%	5646.46%
Net Earnings / Revenue	4.19%	6.66%	4.03%
Basic Earnings Per Share	$1.06	$6.14	$0.87
Diluted Earnings Per Share	$1.04	$6.08	$0.86
COMMON SHARES
Basic Shares Outstanding	135.5M shares	137.9M shares	142.2M shares
Diluted Shares Outstanding		139.2M shares	143.6M shares

Balance Sheet

Concept	2019 Q3	2019	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$631.0M	$631.0M	$887.0M
YoY Change	-18.26%	-18.26%	-16.32%
Cash & Equivalents	$631.1M	$631.0M	$886.7M
Short-Term Investments
Other Short-Term Assets	$641.0M	$641.0M	$1.330B
YoY Change	-49.53%	-49.53%	585.57%
Inventory
Prepaid Expenses	$189.4M		$129.0M
Receivables	$2.840B	$2.840B	$2.682B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.112B	$4.112B	$4.899B
YoY Change	-9.76%	-9.77%	7.74%
LONG-TERM ASSETS
Property, Plant & Equipment	$308.1M	$308.0M	$256.5M
YoY Change	19.5%	19.38%	-55.32%
Goodwill	$5.433B		$4.771B
YoY Change	13.28%
Intangibles	$665.1M		$552.0M
YoY Change	16.08%
Long-Term Investments		$158.0M
YoY Change
Other Assets	$7.043B	$787.0M	$7.790B
YoY Change	-10.07%	-68.05%	738.53%
Total Long-Term Assets	$7.351B	$7.351B	$8.046B
YoY Change	-9.13%	-9.12%	-1.21%
TOTAL ASSETS
Total Short-Term Assets	$4.112B	$4.112B	$4.899B
Total Long-Term Assets	$7.351B	$7.351B	$8.046B
Total Assets	$11.46B	$11.46B	$12.95B
YoY Change	-9.36%	-9.35%	2.0%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.073B	$1.073B	$895.4M
YoY Change	38.19%	38.27%	-5.45%
Accrued Expenses	$1.387B	$1.098B	$994.1M
YoY Change	18.85%	-5.91%	-32.51%
Deferred Revenue
YoY Change
Short-Term Debt	$200.0M	$200.0M	$3.000M
YoY Change	6566.67%	6566.67%	-40.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$3.074B	$3.074B	$3.095B
YoY Change	-2.29%	-2.29%	1.04%
LONG-TERM LIABILITIES
Long-Term Debt	$1.201B	$1.201B	$2.669B
YoY Change	-43.98%	-43.98%	3.13%
Other Long-Term Liabilities	$1.419B	$1.186B	$1.341B
YoY Change	0.5%	-16.01%	24.28%
Total Long-Term Liabilities	$1.201B	$2.387B	$2.669B
YoY Change	-43.98%	-32.87%	-27.22%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.074B	$3.074B	$3.095B
Total Long-Term Liabilities	$1.201B	$2.387B	$2.669B
Total Liabilities	$4.275B	$5.748B	$5.764B
YoY Change	-19.19%	-15.36%	-15.53%
SHAREHOLDERS EQUITY
Retained Earnings	$3.939B		$3.797B
YoY Change	3.39%
Common Stock	$2.692B		$2.813B
YoY Change	-5.57%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$5.715B	$5.715B	$5.753B
YoY Change
Total Liabilities & Shareholders Equity	$11.46B	$11.46B	$12.95B
YoY Change	-9.36%	-9.35%	2.0%

Cashflow Statement

Concept	2019 Q3	2019	2018 Q4
OPERATING ACTIVITIES
Net Income	$142.3M	$848.0M	$124.3M
YoY Change	-479.12%	418.86%	5646.46%
Depreciation, Depletion And Amortization	$43.30M	$169.3M	$39.60M
YoY Change	-15.76%	-14.75%	0.25%
Cash From Operating Activities	-$146.1M	-$366.4M	-$224.7M
YoY Change	-168.85%	-176.16%	-579.25%
INVESTING ACTIVITIES
Capital Expenditures	-$29.30M	$136.0M	$20.72M
YoY Change	-6.98%	43.31%	-7.7%
Acquisitions		$575.1M	$0.00
YoY Change		-61.36%	-100.0%
Other Investing Activities	-$300.0K	$2.288B	-$1.900M
YoY Change	-94.64%	-254.33%	-99.86%
Cash From Investing Activities	-$29.60M	$2.152B	-$22.60M
YoY Change	-20.22%	-236.43%	-98.37%
FINANCING ACTIVITIES
Cash Dividend Paid		$106.4M	$28.60M
YoY Change		22.9%	57.65%
Common Stock Issuance & Retirement, Net		$788.7M	$134.2M
YoY Change		-1658.64%	-1028.58%
Debt Paid & Issued, Net		$3.997B	$323.8M
YoY Change		-12.58%	-70.3%
Cash From Financing Activities	-178.0M	-$1.969B	$345.7M
YoY Change	-9.83%	-272.35%	-78.73%
NET CHANGE
Cash From Operating Activities	-146.1M	-$366.4M	-$224.7M
Cash From Investing Activities	-29.60M	$2.152B	-$22.60M
Cash From Financing Activities	-178.0M	-$1.969B	$345.7M
Net Change In Cash	-353.7M	-$162.3M	$120.5M
YoY Change	1486.1%	-944.95%	-57.53%
FREE CASH FLOW
Cash From Operating Activities	-$146.1M	-$366.4M	-$224.7M
Capital Expenditures	-$29.30M	$136.0M	$20.72M
Free Cash Flow	-$116.8M	-$502.4M	-$245.4M
YoY Change	-147.93%	-230.07%	-1104.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-27
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000052988
CY2019	jec	Dispositionof Business Deferred Taxes DispositionofBusinessDeferredTaxes	5402000	USD
CY2019	jec	Other Comprehensive Income Loss Defined Benefit Planafter Reclassification Adjustment Excluding Dispositionof Business Tax OtherComprehensiveIncomeLossDefinedBenefitPlanafterReclassificationAdjustmentExcludingDispositionofBusinessTax	25348000	USD
CY2017	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeLowerRangeLimit	37.03
CY2018	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeLowerRangeLimit	35.93
CY2019	jec	Share Based Compensation Shares Authorized Under Stock Option Plans Exercised Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedPriceRangeLowerRangeLimit	36.88
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CY2017	jec	Stock Issued During Period Deferred Income Tax Expense Benefit StockIssuedDuringPeriodDeferredIncomeTaxExpenseBenefit	1015000	USD
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CY2019Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	952000	USD
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CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-09-27
CY2019	dei	Entity File Number EntityFileNumber	1-7463
CY2019	dei	Entity Registrant Name EntityRegistrantName	Jacobs Engineering Group Inc.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-4081636
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	1999 Bryan Street
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 1200
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CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
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CY2019	dei	City Area Code CityAreaCode	214
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CY2019	dei	Security12b Title Security12bTitle	Common Stock
CY2019	dei	Trading Symbol TradingSymbol	JEC
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
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CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-56462000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-988000	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 Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.21
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.08
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.42
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	330981000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	243154000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36954000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	325632000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	73103000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	314005000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	5349000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	170051000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	559214000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	167793000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	117324000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	873219000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	173142000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	287375000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	23045000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	9534000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-116000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	290960000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-4185000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	170167000	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
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	-6236000	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
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	123560000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	847979000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	163431000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	293727000	USD
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
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.41
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
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.02
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.14
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.43
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
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.40
CY2018	us-gaap	Profit Loss ProfitLoss	173142000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-17058000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-24380000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-30182000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	16199000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	24470000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-110109000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	287375000	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
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-140527000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	1369000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	118000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	-1350000	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
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-123427000	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
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-18450000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	568000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-859000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	90000	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 Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-153189000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-42920000	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
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	244455000	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
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-6352000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	737870000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10242000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	250807000	USD
CY2016Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4330182000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	287375000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-140527000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-99047000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-1440000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4559000	USD
CY2017	jec	Noncontrolling Interest Increase Decrease From Business Combination NoncontrollingInterestIncreaseDecreaseFromBusinessCombination	445000	USD
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	72765000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	15555000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	100585000	USD
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	110992000	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	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 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	Jec Dispositionof Business Jec_DispositionofBusiness	67037000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-84456000	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 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	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
CY2019	us-gaap	Profit Loss ProfitLoss	873219000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	173142000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	287375000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	90171000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	117856000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	76418000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	79098000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80731000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	46095000	USD
CY2019	jec	Gain Losson Saleof Businessand Investments GainLossonSaleofBusinessandInvestments	935110000	USD
CY2018	jec	Gain Losson Saleof Businessand Investments GainLossonSaleofBusinessandInvestments	0	USD
CY2017	jec	Gain Losson Saleof Businessand Investments GainLossonSaleofBusinessandInvestments	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
CY2017	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	10058000	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
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	69137000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	79242000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	38764000	USD
CY2019	jec	Excess Tax Expense Benefit From Share Based Compensation Operating Activities ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities	0	USD
CY2018	jec	Excess Tax Expense Benefit From Share Based Compensation Operating Activities ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities	0	USD
CY2017	jec	Excess Tax Expense Benefit From Share Based Compensation Operating Activities ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities	2877000	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
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7788000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-6222000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-17491000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-14876000	USD
CY2019	us-gaap	Pension Expense PensionExpense	-33087000	USD
CY2018	us-gaap	Pension Expense PensionExpense	5414000	USD
CY2017	us-gaap	Pension Expense PensionExpense	-9955000	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
CY2017	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-36663000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	401770000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	435198000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-75441000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	13117000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	19134000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	23755000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	295146000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	183057000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	153961000	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
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	4264000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-305716000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-37746000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-56279000	USD
CY2019	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	333876000	USD
CY2018	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	6268000	USD
CY2017	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	-31976000	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
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	575110000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	118060000	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
CY2017	us-gaap	Increase Decrease In Other Deferred Liability IncreaseDecreaseInOtherDeferredLiability	-33547000	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
CY2017	jec	Increase Decrease In Noncurrent Assets And Other Net IncreaseDecreaseInNoncurrentAssetsAndOtherNet	-17259000	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
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	574881000	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
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2387000	USD
CY2019	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	8761000	USD
CY2018	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	5416000	USD
CY2017	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	-31701000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1488336000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	150190000	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
CY2017	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2019	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	-2801425000	USD
CY2018	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	-7736000	USD
CY2017	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	2036000	USD
CY2019	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	1113000	USD
CY2018	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	0	USD
CY2017	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	0	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
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-236198000	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
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1694023000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3996970000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	4572182000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1846797000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	200001000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	712000	USD
CY2017	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	1347000	USD
CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	28566000	USD
CY2018	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	3391000	USD
CY2017	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	702000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3915000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	64958000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	53584000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	62645000	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
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	97180000	USD
CY2019	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	2877000	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
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-242580000	USD
CY2017Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	774151000	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
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	106396000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	86569000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	58793000	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
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
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	22332000	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
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	118435000	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
CY2016Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	655716000	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
CY2016Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	166330000	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
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	607821000	USD
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	Lines_of_Business
CY2019	jec	Revenue From Cost Reimbursable Contracts Percentage RevenueFromCostReimbursableContractsPercentage	0.76
CY2018	jec	Revenue From Cost Reimbursable Contracts Percentage RevenueFromCostReimbursableContractsPercentage	0.74
CY2017	jec	Revenue From Cost Reimbursable Contracts Percentage RevenueFromCostReimbursableContractsPercentage	0.76
CY2019	jec	Revenue From Fixed Price Contracts Percentage RevenueFromFixedPriceContractsPercentage	0.24
CY2018	jec	Revenue From Fixed Price Contracts Percentage RevenueFromFixedPriceContractsPercentage	0.26
CY2017	jec	Revenue From Fixed Price Contracts Percentage RevenueFromFixedPriceContractsPercentage	0.24
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="line-height:120%;padding-top:16px;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;text-decoration:underline;">Concentrations of Credit Risk</span></div><div style="line-height:120%;padding-top:8px;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">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>
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:16px;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;text-decoration:underline;">Use of Estimates and Assumptions</span></div><div style="line-height:120%;padding-top:8px;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">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>
CY2019Q3	jec	Employee Right To Purchase Stock At Discount Rate EmployeeRightToPurchaseStockAtDiscountRate	0.05
CY2019	jec	Aggregate Purchase Price Paid For Shares Sold AggregatePurchasePricePaidForSharesSold	27295425	USD
CY2018	jec	Aggregate Purchase Price Paid For Shares Sold AggregatePurchasePricePaidForSharesSold	23831467	USD
CY2017	jec	Aggregate Purchase Price Paid For Shares Sold AggregatePurchasePricePaidForSharesSold	23190491	USD
CY2019	jec	Aggregate Number Of Shares Sold AggregateNumberOfSharesSold	389423	shares
CY2018	jec	Aggregate Number Of Shares Sold AggregateNumberOfSharesSold	394304	shares
CY2017	jec	Aggregate Number Of Shares Sold AggregateNumberOfSharesSold	443300	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	30950000	shares
CY2019Q3	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	6146619	shares
CY2019Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	926606	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	5220013	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	5631371	shares
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3577512	shares
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.69
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	906648	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	43.79
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	154039	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	48.79
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2516825	shares
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	46.19
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	636019	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	46.93
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
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.53
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2017Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	1992022	shares
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	38700000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
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
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	37800000	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
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	14713000	USD
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
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	926606	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y3M14D
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	45.48
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	860114	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	45.75
CY2017	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	120689000	shares
CY2019	jec	Weighted Average Number Diluted Shares Allocated To Participating Securities WeightedAverageNumberDilutedSharesAllocatedToParticipatingSecurities	197000	shares
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	290960000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-4185000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	170167000	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
CY2017	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	-1783000	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
CY2017	us-gaap	Undistributed Earnings Loss From Continuing Operations Available To Common Shareholders Basic UndistributedEarningsLossFromContinuingOperationsAvailableToCommonShareholdersBasic	168384000	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
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	123560000	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
CY2017	us-gaap	Undistributed Discontinued Operation Earnings Loss Basic UndistributedDiscontinuedOperationEarningsLossBasic	-1294000	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
CY2017	us-gaap	Undistributed Earnings Loss From Discontinued Operations Available To Common Shareholders Basic UndistributedEarningsLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	122266000	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
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	290650000	USD
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
CY2018	jec	Weighted Average Number Diluted Shares Allocated To Participating Securities WeightedAverageNumberDilutedSharesAllocatedToParticipatingSecurities	646000	shares
CY2017	jec	Weighted Average Number Diluted Shares Allocated To Participating Securities WeightedAverageNumberDilutedSharesAllocatedToParticipatingSecurities	1319000	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
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	119370000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1299000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	777000	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
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	120147000	shares
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
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.41
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	4.03
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.09
CY2019Q3	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	250000000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.14
CY2015Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	4005007000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.43
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000.0	USD
CY2019Q1	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	250000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.21
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.02
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.03
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.40
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
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.08
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.42
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1176	shares
CY2015Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000	USD
CY2015Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000	USD
CY2015Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	61.74
CY2015Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	4005007000	shares
CY2019Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	393700000	USD
CY2019Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000.0	USD
CY2019Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000	USD
CY2019Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	86.43
CY2019Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	7014633000	shares
CY2019Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	7014633000	shares
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.17
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	612000000	USD
CY2019	jec	Goodwill Adjustments During Period GoodwillAdjustmentsDuringPeriod	51000000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	26000000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	5433000000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	4796000000	USD
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
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2019Q2	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	136000000.0	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	572952000	USD
CY2019	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	179000000	USD
CY2019	us-gaap	Finite Lived Intangible Assets Purchase Accounting Adjustments FiniteLivedIntangibleAssetsPurchaseAccountingAdjustments	-883000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	79098000	USD
CY2019	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	6895000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	665076000	USD
CY2019	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P8Y
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	86600000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	82800000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	81700000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	81400000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	81400000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	247200000	USD
CY2019Q3	jec	Amount After Amortization Of Assets Excluding Financial Assets And Goodwill AmountAfterAmortizationOfAssetsExcludingFinancialAssetsAndGoodwill	661100000	USD
CY2019Q2	jec	Amendedand Restated Stockand Asset Purchase Agreement Modified Lockup Share Consideration Percent AmendedandRestatedStockandAssetPurchaseAgreementModifiedLockupShareConsiderationPercent	0.099
CY2019	us-gaap	Discontinued Operation Period Of Continuing Involvement After Disposal DiscontinuedOperationPeriodOfContinuingInvolvementAfterDisposal	P1Y
CY2019Q3	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	71800000	USD
CY2018Q3	us-gaap	Restructuring Reserve RestructuringReserve	102297000	USD
CY2019	jec	Restructuring Reserve Increase From Business Acquisition RestructuringReserveIncreaseFromBusinessAcquisition	6884000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	311470000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	244181000	USD
CY2019Q3	us-gaap	Restructuring Reserve RestructuringReserve	162702000	USD
CY2019Q3	us-gaap	Restructuring And Related Cost Cost Incurred To Date1 RestructuringAndRelatedCostCostIncurredToDate1	477742000	USD
CY2019Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	2535000	USD
CY2018Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	4998000	USD
CY2019Q3	us-gaap	Other Long Term Debt OtherLongTermDebt	0	USD
CY2018Q3	us-gaap	Other Long Term Debt OtherLongTermDebt	36000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1201245000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2144167000	USD
CY2019	us-gaap	Interest Paid InterestPaid	81582000	USD
CY2018	us-gaap	Interest Paid InterestPaid	68467000	USD
CY2017	us-gaap	Interest Paid InterestPaid	12862000	USD
CY2019Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	2840209000	USD
CY2019Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	952000	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	918202000	USD
CY2019Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	414208000	USD
CY2019Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	2573000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	350300000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	13400000000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.480
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.520
CY2019	jec	Defined Contribution Plan Savings Plans Contributions DefinedContributionPlanSavingsPlansContributions	103375000	USD
CY2018	jec	Defined Contribution Plan Savings Plans Contributions DefinedContributionPlanSavingsPlansContributions	113135000	USD
CY2017	jec	Defined Contribution Plan Savings Plans Contributions DefinedContributionPlanSavingsPlansContributions	82882000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	2395000	USD
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	4445000	USD
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	4368000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25549000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	49829000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	22825000	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
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7481000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	57156000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	20858000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9194000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	89344000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	69141000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	39500000	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
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	22854000	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
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1832000	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
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	8917000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-52390000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	256491000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	33603000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36954000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	325632000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	73103000	USD
CY2019	jec	Measurement Period Adjustments On Effective Tax Rate MeasurementPeriodAdjustmentsOnEffectiveTaxRate	P1Y
CY2018Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense	144400000	USD
CY2019	jec	Income Tax Expense Differential Losses Netted Against Uncertain Tax Positions IncomeTaxExpenseDifferentialLossesNettedAgainstUncertainTaxPositions	24400000	USD
CY2019	jec	Tax Cuts And Jobs Act Of2017 Provisional Information Repatriationof Foreign Earnings Taxon Post1986 Earnings TaxCutsAndJobsActOf2017ProvisionalInformationRepatriationofForeignEarningsTaxonPost1986Earnings	800000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	56854000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	39777000	USD
CY2019Q3	jec	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOtherEmployeeBenefits	149276000	USD
CY2018Q3	jec	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOtherEmployeeBenefits	135713000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	241033000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	149256000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	84553000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	145931000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	13881000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	13972000	USD
CY2019Q3	jec	Deferred Tax Assets Deferred Income Expense DeferredTaxAssetsDeferredIncomeExpense	62318000	USD
CY2018Q3	jec	Deferred Tax Assets Deferred Income Expense DeferredTaxAssetsDeferredIncomeExpense	144383000	USD
CY2019Q3	jec	Deferred Tax Assets Deferred Rent DeferredTaxAssetsDeferredRent	21847000	USD
CY2018Q3	jec	Deferred Tax Assets Deferred Rent DeferredTaxAssetsDeferredRent	5654000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	8205000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	5289000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3821000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	153257000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	256948000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	488531000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	383027000	USD
CY2019Q3	jec	Deferred Tax Liabilities Depreciation And Amortization DeferredTaxLiabilitiesDepreciationAndAmortization	177002000	USD
CY2018Q3	jec	Deferred Tax Liabilities Depreciation And Amortization DeferredTaxLiabilitiesDepreciationAndAmortization	159312000	USD
CY2019Q3	jec	Deferred Tax Liabilities Self Insurance Programs DeferredTaxLiabilitiesSelfInsurancePrograms		USD
CY2018Q3	jec	Deferred Tax Liabilities Self Insurance Programs DeferredTaxLiabilitiesSelfInsurancePrograms	0	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	29761000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	48578000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	246000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8345000	USD
CY2019Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	207009000	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	216235000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	281522000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	166792000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	153300000	USD
CY2018	jec	Estimated Valuation Allowance For Income Tax EstimatedValuationAllowanceForIncomeTax	256900000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-103700000	USD
CY2019	jec	Income Tax Reconciliation Benefit From Foreign Valuation Allowance Release IncomeTaxReconciliationBenefitFromForeignValuationAllowanceRelease	-29100000	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
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1800000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	jec	Income Tax Reconciliation Benefit From Foreign Valuation Allowance Release IncomeTaxReconciliationBenefitFromForeignValuationAllowanceRelease	-29100000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	15700000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies Foreign IncomeTaxReconciliationTaxContingenciesForeign	17900000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-6900000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	36600000	USD
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
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	85104000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
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
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6983000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
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
CY2017	jec	Income Tax Reconciliation Exclusion Of Tax On Non Controlling Interests IncomeTaxReconciliationExclusionOfTaxOnNonControllingInterests	2223000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Exclusion Of Tax On Non Controlling Interests EffectiveIncomeTaxRateReconciliationExclusionOfTaxOnNonControllingInterests	0.009
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
CY2017	jec	Income Tax Reconciliation Difference In Tax Rates Of Foreign Operations IncomeTaxReconciliationDifferenceInTaxRatesOfForeignOperations	-880000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Difference In Tax Rates Of Foreign Operations EffectiveIncomeTaxRateReconciliationDifferenceInTaxRatesOfForeignOperations	-0.004
CY2019	jec	Income Tax Reconciliation Benefit From Foreign Valuation Allowance Release IncomeTaxReconciliationBenefitFromForeignValuationAllowanceRelease	-29125000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Benefit From Foreign Valuation Allowance Release EffectiveIncomeTaxRateReconciliationBenefitFromForeignValuationAllowanceRelease	-0.083
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
CY2017	jec	Income Tax Reconciliation Benefit From Foreign Valuation Allowance Release IncomeTaxReconciliationBenefitFromForeignValuationAllowanceRelease	-3085000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Benefit From Foreign Valuation Allowance Release EffectiveIncomeTaxRateReconciliationBenefitFromForeignValuationAllowanceRelease	-0.013
CY2019	jec	Income Tax Reconciliation Nontaxable Income From Foreign Affiliate IncomeTaxReconciliationNontaxableIncomeFromForeignAffiliate	0	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Uk Tax Rate Change On Deferred Tax Assets EffectiveIncomeTaxRateReconciliationUKTaxRateChangeOnDeferredTaxAssets	0
CY2018	jec	Income Tax Reconciliation Nontaxable Income From Foreign Affiliate IncomeTaxReconciliationNontaxableIncomeFromForeignAffiliate	0	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Uk Tax Rate Change On Deferred Tax Assets EffectiveIncomeTaxRateReconciliationUKTaxRateChangeOnDeferredTaxAssets	0
CY2017	jec	Income Tax Reconciliation Nontaxable Income From Foreign Affiliate IncomeTaxReconciliationNontaxableIncomeFromForeignAffiliate	-1320000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Uk Tax Rate Change On Deferred Tax Assets EffectiveIncomeTaxRateReconciliationUKTaxRateChangeOnDeferredTaxAssets	-0.005
CY2019	jec	Income Tax Reconciliation Us Tax Cost Of Foreign Operations IncomeTaxReconciliationUSTaxCostOfForeignOperations	-17760000	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Nontaxable Income From Foreign Affiliate EffectiveIncomeTaxRateReconciliationNontaxableIncomeFromForeignAffiliate	-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
CY2017	jec	Income Tax Reconciliation Us Tax Cost Of Foreign Operations IncomeTaxReconciliationUSTaxCostOfForeignOperations	10147000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Us Tax Cost Of Foreign Operations EffectiveIncomeTaxRateReconciliationUSTaxCostOfForeignOperations	0.042
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
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	4862000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.020
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
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	16337000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0.067
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
CY2017	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Amount	0	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Tax Credit Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCreditTaxCutsandJobsActof2017Percent	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
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
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
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-5624000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.023
CY2019	jec	Income Tax Reconciliation Irs One Seven Nine D Deduction IncomeTaxReconciliationIRSOneSevenNineDDeduction	-2957000	USD
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
CY2017	jec	Income Tax Reconciliation Irs One Seven Nine D Deduction IncomeTaxReconciliationIRSOneSevenNineDDeduction	-2613000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Irs One Seven Nine D Deduction EffectiveIncomeTaxRateReconciliationIRSOneSevenNineDDeduction	-0.011
CY2019	jec	Income Tax Reconciliation Irs One Nine Nine D Deduction IncomeTaxReconciliationIRSOneNineNineDDeduction	0	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Irs One Nine Nine D Deduction EffectiveIncomeTaxRateReconciliationIRSOneNineNineDDeduction	0
CY2018	jec	Income Tax Reconciliation Irs One Nine Nine D Deduction IncomeTaxReconciliationIRSOneNineNineDDeduction	0	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Irs One Nine Nine D Deduction EffectiveIncomeTaxRateReconciliationIRSOneNineNineDDeduction	0
CY2017	jec	Income Tax Reconciliation Irs One Nine Nine D Deduction IncomeTaxReconciliationIRSOneNineNineDDeduction	-1647000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Irs One Nine Nine D Deduction EffectiveIncomeTaxRateReconciliationIRSOneNineNineDDeduction	-0.007
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
CY2017	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Amount EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationAmount	1255000	USD
CY2017	jec	Effective Income Tax Rate Reconciliation Disallowed Officers Compensation Percent EffectiveIncomeTaxRateReconciliationDisallowedOfficersCompensationPercent	0.005
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
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-1783000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.007
CY2019	jec	Income Tax Reconciliation Foreign Partnership Income Loss IncomeTaxReconciliationForeignPartnershipIncomeLoss	0	USD
CY2019	jec	Effective Income Tax Rate Reconciliation Foreign Partnership Income Loss EffectiveIncomeTaxRateReconciliationForeignPartnershipIncomeLoss	0
CY2018	jec	Income Tax Reconciliation Foreign Partnership Income Loss IncomeTaxReconciliationForeignPartnershipIncomeLoss	3678000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Foreign Partnership Income Loss EffectiveIncomeTaxRateReconciliationForeignPartnershipIncomeLoss	0.011
CY2017	jec	Effective Income Tax Rate Reconciliation Foreign Partnership Income Loss EffectiveIncomeTaxRateReconciliationForeignPartnershipIncomeLoss	0.003
CY2017	jec	Income Tax Reconciliation Foreign Partnership Income Loss IncomeTaxReconciliationForeignPartnershipIncomeLoss	725000	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
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1114000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36954000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.105
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1405000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
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
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-4108000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.017
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	325632000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.984
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	73103000	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.301
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.105
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.984
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	119100000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	104200000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.984
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.301
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	139800000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	104200000	USD
CY2018	jec	Effective Income Tax Rate Reconciliation Foreign Income Tax Rateto New Us Statutory Rateof Prior Year Differential Amount EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRatetoNewUSStatutoryRateofPriorYearDifferentialAmount	19800000	USD
CY2018	jec	Income Tax Reconciliation Irs One Seven Nine D Deduction IncomeTaxReconciliationIRSOneSevenNineDDeduction	-4600000	USD
CY2018	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	2800000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	5700000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	291700000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	44300000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	78400000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	350959000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	7455000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	330981000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	243154000	USD
CY2019	jec	Tax Cuts And Jobs Act Of2017 Provisional Information Repatriationof Foreign Earnings Income Tax Expense TaxCutsAndJobsActOf2017ProvisionalInformationRepatriationofForeignEarningsIncomeTaxExpense	29800000	USD
CY2019Q3	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	51100000	USD
CY2018Q3	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	56300000	USD
CY2019Q3	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	4300000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	179140000	USD
CY2017Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	38580000	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44167000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Acquisition UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition	31004000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	137912000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	9780000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5900000	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
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	237000	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
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4524000	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
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	7200000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	104355000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	179140000	USD
CY2017Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	38580000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	131250000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	190287000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	172017000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	151452000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	116381000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	352194000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	1113581000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	31884000	USD
CY2019Q3	jec	Operating Leases Future Minimum Payments Due Including Sublease Income OperatingLeasesFutureMinimumPaymentsDueIncludingSubleaseIncome	1081697000	USD
CY2019	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	167365000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	169931000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	96875000	USD
CY2019	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	11514000	USD
CY2018	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	5087000	USD
CY2017	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	3160000	USD
CY2019	jec	Net Rent NetRent	155851000	USD
CY2018	jec	Net Rent NetRent	164844000	USD
CY2017	jec	Net Rent NetRent	93715000	USD
CY2019Q3	us-gaap	Billed Contract Receivables BilledContractReceivables	1222339000	USD
CY2018Q3	us-gaap	Billed Contract Receivables BilledContractReceivables	1107250000	USD
CY2019Q3	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	1216028000	USD
CY2018Q3	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	1393246000	USD
CY2019Q3	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	401842000	USD
CY2018Q3	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	13438000	USD
CY2019Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	2840209000	USD
CY2018Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	2513934000	USD
CY2019Q3	us-gaap	Due From Other Related Parties Current DueFromOtherRelatedPartiesCurrent	630975000	USD
CY2018Q3	us-gaap	Due From Other Related Parties Current DueFromOtherRelatedPartiesCurrent	472846000	USD
CY2019	jec	Billed Receivables Collection Period BilledReceivablesCollectionPeriod	P12M
CY2019	jec	Unbilled Amounts Billed And Collected UnbilledAmountsBilledAndCollected	P12M
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	804931000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	712961000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	496788000	USD
CY2018Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	455102000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	308143000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	257859000	USD
CY2019Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	219948000	USD
CY2018Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	280337000	USD
CY2019Q3	us-gaap	Investments Investments	157919000	USD
CY2018Q3	us-gaap	Investments Investments	150052000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	514633000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	319405000	USD
CY2019Q3	us-gaap	Other Assets OtherAssets	25702000	USD
CY2018Q3	us-gaap	Other Assets OtherAssets	11060000	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	918202000	USD
CY2018Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	760854000	USD
CY2019Q3	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	677313000	USD
CY2018Q3	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	633404000	USD
CY2019Q3	jec	Project Related Accruals ProjectRelatedAccruals	58835000	USD
CY2018Q3	jec	Project Related Accruals ProjectRelatedAccruals	40378000	USD
CY2019Q3	jec	Non Project Related Accruals NonProjectRelatedAccruals	258312000	USD
CY2018Q3	jec	Non Project Related Accruals NonProjectRelatedAccruals	295463000	USD
CY2019Q3	jec	Insurance Liabilities InsuranceLiabilities	83968000	USD
CY2018Q3	jec	Insurance Liabilities InsuranceLiabilities	58666000	USD
CY2019Q3	jec	Sales And Other Similar Taxes SalesAndOtherSimilarTaxes	34390000	USD
CY2018Q3	jec	Sales And Other Similar Taxes SalesAndOtherSimilarTaxes	58728000	USD
CY2019Q3	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	68914000	USD
CY2018Q3	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	58252000	USD
CY2019Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	23439000	USD
CY2018Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	22111000	USD
CY2019Q3	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	179208000	USD
CY2018Q3	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	0	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1384379000	USD
CY2018Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1167002000	USD
CY2019Q3	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	398499000	USD
CY2018Q3	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	329604000	USD
CY2019Q3	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	177401000	USD
CY2018Q3	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	216068000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	233111000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	152613000	USD
CY2019Q3	jec	Deferred Miscellaneous Liabilities DeferredMiscellaneousLiabilities	609994000	USD
CY2018Q3	jec	Deferred Miscellaneous Liabilities DeferredMiscellaneousLiabilities	562692000	USD
CY2019Q3	us-gaap	Deferred Long Term Liability Charges DeferredLongTermLiabilityCharges	1419005000	USD
CY2018Q3	us-gaap	Deferred Long Term Liability Charges DeferredLongTermLiabilityCharges	1260977000	USD
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3
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
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	6330126000	USD
CY2019	jec	Restructuring And Other Charges RestructuringAndOtherCharges	337066000	USD
CY2018	jec	Restructuring And Other Charges RestructuringAndOtherCharges	153951000	USD
CY2017	jec	Restructuring And Other Charges RestructuringAndOtherCharges	91648000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	404851000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	387443000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	244142000	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
CY2017	jec	Other Nonoperating Income Expense Excluding Disposal Group Not Discontinued Operation Gain Loss On Disposal OtherNonoperatingIncomeExpenseExcludingDisposalGroupNotDiscontinuedOperationGainLossOnDisposal	-988000	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
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	243154000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	12737868000	USD
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	64800000	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
CY2017	us-gaap	Disposal Group Including Discontinued Operation Other Expense DisposalGroupIncludingDiscontinuedOperationOtherExpense	29100000	USD
CY2019	us-gaap	Depreciation And Amortization Discontinued Operations DepreciationAndAmortizationDiscontinuedOperations	79100000	USD
CY2018	us-gaap	Depreciation And Amortization Discontinued Operations DepreciationAndAmortizationDiscontinuedOperations	68100000	USD
CY2019	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	35000000.0	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	35400000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	10579773000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	6330126000	USD
CY2019Q3	us-gaap	Noncurrent Assets NoncurrentAssets	308143000	USD
CY2018Q3	us-gaap	Noncurrent Assets NoncurrentAssets	257859000	USD
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
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
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
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
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.42
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
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	4.03
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
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
CY2017Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1783999000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2870295000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2933623000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2991856000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	10579773000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-4670000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	68755000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	162512000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	48587000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	160846000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	387443000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-6703000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	48651000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	146633000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	142400000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	330981000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-33903000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	150222000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-37541000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-3205000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	115459000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-73002000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	5349000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-34234000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-6290000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	113336000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-76997000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-4185000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	2163000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	163431000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.27
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.04
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.79
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.54
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.03
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.29
CY2018Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.39
CY2018Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.26
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.28
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.21
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.05
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2017Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.27
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.04
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.79
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.54
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.03
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.29
CY2018Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.39
CY2018Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.26
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.28
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.21
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.05
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.18
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
CY2017Q4	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	0.73
CY2018Q1	jec	Restructuring And Other Charges RestructuringAndOtherCharges	130300000	USD
CY2018Q1	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	0.91
CY2018Q2	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	0.45
CY2018Q3	jec	Effect Of Restructuring And Other Charges On Earnings Per Diluted Share EffectOfRestructuringAndOtherChargesOnEarningsPerDilutedShare	1.67

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$J
JACOBS SOLUTIONS INC. Stock $j

2019 Q3 Form 10-K Financial Statement

#000005298819000069 Filed on November 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$J JACOBS SOLUTIONS INC. Stock $j

2019 Q3 Form 10-K Financial Statement

#000005298819000069 Filed on November 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$J
JACOBS SOLUTIONS INC. Stock $j