$IT
GARTNER INC Stock $it

$it Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000074925119000005 Filed on February 22, 2019

Income Statement

Concept	2018 Q4	2017 Q4	2016 Q4
Revenue	$1.089B	$1.015B	$703.2M
YoY Change	7.33%	44.27%	9.23%
Cost Of Revenue	$407.8M	$398.4M	$279.1M
YoY Change	2.36%	42.74%	8.51%
Gross Profit	$681.0M	$616.1M	$424.2M
YoY Change	10.53%	45.24%	9.73%
Gross Profit Margin	62.54%	60.73%	60.32%
Selling, General & Admin	$488.1M	$467.3M	$289.9M
YoY Change	4.45%	61.19%	12.02%
% of Gross Profit	71.67%	75.85%	68.34%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$52.50M	$71.50M	$16.00M
YoY Change	-26.57%	346.88%	5.26%
% of Gross Profit	7.71%	11.61%	3.77%
Operating Expenses	$540.6M	$538.8M	$305.8M
YoY Change	0.33%	76.19%	11.61%
Operating Profit	$140.4M	$77.30M	$118.4M
YoY Change	81.63%	-34.71%	5.15%
Interest Expense	-$32.10M	-$38.10M	-$12.00M
YoY Change	-15.75%	217.5%	96.72%
% of Operating Profit	-22.86%	-49.29%	-10.14%
Other Income/Expense, Net	$6.600M	$3.600M	$9.500M
YoY Change	83.33%	-62.11%	763.64%
Pretax Income	$111.0M	$28.40M	$106.2M
YoY Change	290.85%	-73.26%	9.82%
Income Tax	$33.00M	-$19.30M	$39.70M
% Of Pretax Income	29.73%	-67.96%	37.38%
Net Earnings	$84.00M	$107.3M	$66.50M
YoY Change	-21.71%	61.35%	1.06%
Net Earnings / Revenue	7.71%	10.58%	9.46%
Basic Earnings Per Share
Diluted Earnings Per Share	$915.0K	$1.113M	$791.7K
COMMON SHARES
Basic Shares Outstanding	90.89M shares	90.65M shares	82.61M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2018 Q4	2017 Q4	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$156.4M	$538.9M	$474.2M
YoY Change	-70.98%	13.64%	27.13%
Cash & Equivalents	$156.4M	$538.9M	$474.2M
Short-Term Investments
Other Short-Term Assets	$400.2M	$872.8M	$225.9M
YoY Change	-54.15%	286.37%	20.67%
Inventory
Prepaid Expenses
Receivables	$1.255B	$1.177B	$643.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.812B	$2.589B	$1.343B
YoY Change	-30.01%	92.72%	17.72%
LONG-TERM ASSETS
Property, Plant & Equipment	$267.7M	$221.5M	$121.6M
YoY Change	20.84%	82.15%	11.84%
Goodwill	$2.923B	$2.987B	$738.5M
YoY Change	-2.15%	304.53%	3.23%
Intangibles	$1.043B	$1.292B	$76.80M
YoY Change	-19.31%	1582.3%	-20.45%
Long-Term Investments
YoY Change
Other Assets	$156.4M	$193.7M	$87.28M
YoY Change	-19.29%	121.98%	-18.34%
Total Long-Term Assets	$424.0M	$415.2M	$210.9M
YoY Change	2.12%	96.92%	-0.11%
TOTAL ASSETS
Total Short-Term Assets	$1.812B	$2.589B	$1.343B
Total Long-Term Assets	$424.0M	$415.2M	$210.9M
Total Assets	$6.201B	$7.283B	$2.367B
YoY Change	-14.85%	207.65%	9.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$37.51M	$49.00M	$41.01M
YoY Change	-23.45%	19.49%	29.9%
Accrued Expenses
YoY Change
Deferred Revenue	$1.745B	$1.630B
YoY Change	7.06%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$165.6M	$379.7M	$30.00M
YoY Change	-56.39%	1165.74%	-14.29%
Total Short-Term Liabilities	$2.621B	$2.823B	$1.460B
YoY Change	-7.14%	93.29%	10.33%
LONG-TERM LIABILITIES
Long-Term Debt	$2.116B	$2.899B	$664.4M
YoY Change	-27.01%	336.36%	-15.24%
Other Long-Term Liabilities	$613.7M	$578.0M	$181.8M
YoY Change	6.17%	217.9%	-6.08%
Total Long-Term Liabilities	$2.730B	$3.477B	$846.2M
YoY Change	-21.49%	310.91%	-13.42%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.621B	$2.823B	$1.460B
Total Long-Term Liabilities	$2.730B	$3.477B	$846.2M
Total Liabilities	$5.351B	$6.300B	$2.306B
YoY Change	-15.06%	173.13%	0.24%
SHAREHOLDERS EQUITY
Retained Earnings	$1.755B	$1.647B	$1.644B
YoY Change	6.57%	0.2%	13.33%
Common Stock	$82.00K	$82.00K	$78.00K
YoY Change	0.0%	5.13%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.689B	$2.427B	$2.397B
YoY Change	10.79%	1.26%	1.67%
Treasury Stock Shares	73.90M shares	72.78M shares	73.58M shares
Shareholders Equity	$850.8M	$983.5M	$60.88M
YoY Change
Total Liabilities & Shareholders Equity	$6.201B	$7.283B	$2.367B
YoY Change	-14.85%	207.65%	9.17%

Cashflow Statement

Concept	2018 Q4	2017 Q4	2016 Q4
OPERATING ACTIVITIES
Net Income	$84.00M	$107.3M	$66.50M
YoY Change	-21.71%	61.35%	1.06%
Depreciation, Depletion And Amortization	$52.50M	$71.50M	$16.00M
YoY Change	-26.57%	346.88%	5.26%
Cash From Operating Activities	$45.20M	$22.20M	$83.30M
YoY Change	103.6%	-73.35%	5.04%
INVESTING ACTIVITIES
Capital Expenditures	-$62.30M	-$35.20M	-$13.00M
YoY Change	76.99%	170.77%	30.0%
Acquisitions		$2.640B
YoY Change
Other Investing Activities	$6.000M	$0.00	-$18.80M
YoY Change		-100.0%	2585.71%
Cash From Investing Activities	-$56.10M	-$35.10M	-$31.90M
YoY Change	59.83%	10.03%	192.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-43.50M	-65.80M	-43.80M
YoY Change	-33.89%	50.23%	-34.14%
NET CHANGE
Cash From Operating Activities	45.20M	22.20M	83.30M
Cash From Investing Activities	-56.10M	-35.10M	-31.90M
Cash From Financing Activities	-43.50M	-65.80M	-43.80M
Net Change In Cash	-54.40M	-78.70M	7.600M
YoY Change	-30.88%	-1135.53%	300.0%
FREE CASH FLOW
Cash From Operating Activities	$45.20M	$22.20M	$83.30M
Capital Expenditures	-$62.30M	-$35.20M	-$13.00M
Free Cash Flow	$107.5M	$57.40M	$96.30M
YoY Change	87.28%	-40.39%	7.84%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000749251
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	89711737	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	11675031229	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	GARTNER INC
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2017Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	2086764000	USD
CY2018Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	3027375000	USD
CY2018Q4	it	Allowance For Doubtful Accounts Receivable Revenue Reserve AllowanceForDoubtfulAccountsReceivableRevenueReserve	7400000	USD
CY2018	it	Amortization Of Deferred Sales Commissions Amortization Period AmortizationOfDeferredSalesCommissionsAmortizationPeriod	P1Y
CY2016Q4	it	Averagemarketpricepershareof Common Stockduringtheyear AveragemarketpricepershareofCommonStockduringtheyear	92.58
CY2017Q4	it	Averagemarketpricepershareof Common Stockduringtheyear AveragemarketpricepershareofCommonStockduringtheyear	116.09
CY2018Q4	it	Averagemarketpricepershareof Common Stockduringtheyear AveragemarketpricepershareofCommonStockduringtheyear	135.60
CY2016	it	Business Combination Acquisitionand Integration Related Costs BusinessCombinationAcquisitionandIntegrationRelatedCosts	42600000	USD
CY2016	it	Business Combination Acquisitionand Integration Related Costs BusinessCombinationAcquisitionandIntegrationRelatedCosts	42598000	USD
CY2017	it	Business Combination Acquisitionand Integration Related Costs BusinessCombinationAcquisitionandIntegrationRelatedCosts	158500000	USD
CY2017	it	Business Combination Acquisitionand Integration Related Costs BusinessCombinationAcquisitionandIntegrationRelatedCosts	158450000	USD
CY2018	it	Business Combination Acquisitionand Integration Related Costs BusinessCombinationAcquisitionandIntegrationRelatedCosts	107197000	USD
CY2018	it	Business Combination Acquisitionand Integration Related Costs BusinessCombinationAcquisitionandIntegrationRelatedCosts	107200000	USD
CY2018Q4	it	Common Stock Numberof Votesper Share CommonStockNumberofVotesperShare	1	vote
CY2017Q4	it	Deferred Tax Assets Accrued Expenses DeferredTaxAssetsAccruedExpenses	80557000	USD
CY2018Q4	it	Deferred Tax Assets Accrued Expenses DeferredTaxAssetsAccruedExpenses	96292000	USD
CY2017Q4	it	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	59502000	USD
CY2018Q4	it	Deferred Tax Assets Operating Loss And Tax Credit Carryforwards DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards	14830000	USD
CY2017Q4	it	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	962000	USD
CY2018Q4	it	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	3421000	USD
CY2018	it	Defined Benefit Plan Accumulated Other Comprehensive Income Loss Deferred Actuarial Loss Weighted Average Amortization Period DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossDeferredActuarialLossWeightedAverageAmortizationPeriod	P13Y
CY2016	it	Defined Benefit Plan Actuarial Gains Losses DefinedBenefitPlanActuarialGainsLosses	1480000	USD
CY2017	it	Defined Benefit Plan Actuarial Gains Losses DefinedBenefitPlanActuarialGainsLosses	690000	USD
CY2018	it	Defined Benefit Plan Actuarial Gains Losses DefinedBenefitPlanActuarialGainsLosses	-430000	USD
CY2017Q4	it	Defined Benefit Plan Reinsurance Asset DefinedBenefitPlanReinsuranceAsset	9100000	USD
CY2018Q4	it	Defined Benefit Plan Reinsurance Asset DefinedBenefitPlanReinsuranceAsset	9000000	USD
CY2016	it	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Percent EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomePercent	0.000
CY2017	it	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Percent EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomePercent	0.000
CY2018	it	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Percent EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomePercent	-0.020
CY2016	it	Effective Income Tax Rate Reconciliation Limitation Of Executive Compensation Percent EffectiveIncomeTaxRateReconciliationLimitationOfExecutiveCompensationPercent	0.000
CY2017	it	Effective Income Tax Rate Reconciliation Limitation Of Executive Compensation Percent EffectiveIncomeTaxRateReconciliationLimitationOfExecutiveCompensationPercent	-0.001
CY2018	it	Effective Income Tax Rate Reconciliation Limitation Of Executive Compensation Percent EffectiveIncomeTaxRateReconciliationLimitationOfExecutiveCompensationPercent	0.027
CY2017	it	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit Per Share EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017IncomeTaxExpenseBenefitPerShare	-0.66
CY2016	it	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.000
CY2017	it	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.418
CY2018	it	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.013
CY2018Q4	it	Finite Lived Intangible Assets Amortization Expense Year Fiveand After FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveandAfter	595276000	USD
CY2017	it	Finite Lived Intangible Assets Classified As Held For Sale FiniteLivedIntangibleAssetsClassifiedAsHeldForSale	250472000	USD
CY2018	it	Finite Lived Intangible Assets Divestitures FiniteLivedIntangibleAssetsDivestitures	46129000	USD
CY2017	it	Finite Lived Intangible Assets Fully Amortized Intangibles FiniteLivedIntangibleAssetsFullyAmortizedIntangibles	4227000	USD
CY2018	it	Finite Lived Intangible Assets Fully Amortized Intangibles FiniteLivedIntangibleAssetsFullyAmortizedIntangibles	15998000	USD
CY2016	it	Income Tax Expense Benefitbefore Other IncomeTaxExpenseBenefitbeforeOther	95408000	USD
CY2017	it	Income Tax Expense Benefitbefore Other IncomeTaxExpenseBenefitbeforeOther	-128932000	USD
CY2018	it	Income Tax Expense Benefitbefore Other IncomeTaxExpenseBenefitbeforeOther	54753000	USD
CY2016	it	Interest Expenseand Other Nonoperating Income InterestExpenseandOtherNonoperatingIncome	16710000	USD
CY2017	it	Interest Expenseand Other Nonoperating Income InterestExpenseandOtherNonoperatingIncome	121488000	USD
CY2018	it	Interest Expenseand Other Nonoperating Income InterestExpenseandOtherNonoperatingIncome	124041000	USD
CY2018Q4	it	Numberof Enterprises Served NumberofEnterprisesServed	15000	enterprise
CY2017Q4	it	Other Liabilities Noncurrent Other OtherLiabilitiesNoncurrentOther	54362000	USD
CY2018Q4	it	Other Liabilities Noncurrent Other OtherLiabilitiesNoncurrentOther	50081000	USD
CY2017Q4	it	Severanceand Retention Bonus Payable SeveranceandRetentionBonusPayable	44685000	USD
CY2018Q4	it	Severanceand Retention Bonus Payable SeveranceandRetentionBonusPayable	28292000	USD
CY2018	it	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodWeightedAverageRemainingContractualTerm	P2Y4M1D
CY2017	it	Stock Issued During Period Value Share Based Compensation And Acquisitions StockIssuedDuringPeriodValueShareBasedCompensationAndAcquisitions	830446000	USD
CY2017Q4	it	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Liability TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalLiability	63600000	USD
CY2018Q4	it	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Liability TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalLiability	8400000	USD
CY2018Q4	it	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Remaining Provisional Liability TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsRemainingProvisionalLiability	10000000	USD
CY2017	it	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Provisional Income Tax Expense Benefit TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit	-123200000	USD
CY2018	it	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Provisional Income Tax Expense Benefit TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit	-13800000	USD
CY2017Q4	it	Taxes Payable Noncurrent TaxesPayableNoncurrent	66386000	USD
CY2018Q4	it	Taxes Payable Noncurrent TaxesPayableNoncurrent	66304000	USD
CY2018	it	Unrecognized Tax Benefits Reductions Resultingfrom Settlementswith Taxing Authoritiesand Lapseof Applicable Statuteof Limitations UnrecognizedTaxBenefitsReductionsResultingfromSettlementswithTaxingAuthoritiesandLapseofApplicableStatuteofLimitations	20000000	USD
CY2018Q4	it	Unrecognized Tax Benefitsthat Would Result Adjustmentsto Other Tax Accounts UnrecognizedTaxBenefitsthatWouldResultAdjustmentstoOtherTaxAccounts	4100000	USD
CY2017Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	666821000	USD
CY2018Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	710113000	USD
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	49000000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	37508000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1176843000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1255118000	USD
CY2017Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	162710000	USD
CY2018Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	170719000	USD
CY2017Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	108969000	USD
CY2018Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	126844000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	210512000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	246697000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1508000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-39867000	USD
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1761383000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1823710000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	46661000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	78943000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	66172000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	46700000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	78900000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	66200000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12700000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7700000	USD
CY2016	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	180200000	USD
CY2017	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	230500000	USD
CY2018	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	304800000	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3082000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	15062000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	13815000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	24797000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	176274000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	187000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	187009000	USD
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	200000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	300000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2017Q4	us-gaap	Assets Assets	7283173000	USD
CY2018Q4	us-gaap	Assets Assets	6201474000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	2588608000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	1811739000	USD
CY2017Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	93590000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	67964000	USD
CY2016Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	210877000	USD
CY2017Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	415249000	USD
CY2018Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	424034000	USD
CY2017Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	542965000	USD
CY2018Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2017Q4	us-gaap	Business Acquisition Percentage Of Voting Interests Acquired BusinessAcquisitionPercentageOfVotingInterestsAcquired	1
CY2017	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	-2.68
CY2018	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.66
CY2016	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	8800000	USD
CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	9900000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	13200000	USD
CY2017Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	26900000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	37400000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	372976000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	474233000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	538908000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	156368000	USD
CY2015Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	412107000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	499354000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	567058000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	158663000	USD
CY2016	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	92887000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	41802000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-401906000	USD
CY2017Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	59000000	USD
CY2018Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	57700000	USD
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0005
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0005
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	156234415	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	163602067	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	82000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	82000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	188301000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	54470000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	80490000	USD
CY2017Q4	us-gaap	Contract With Customer Asset Accumulated Allowance For Credit Loss ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss	26672000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Accumulated Allowance For Credit Loss ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss	26119000	USD
CY2017Q4	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	1162871000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	1262818000	USD
CY2017Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1646403000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1766438000	USD
CY2017Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1630198000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1745244000	USD
CY2017Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	16205000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	21194000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1287800000	USD
CY2016	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	945648000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1320198000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1468800000	USD
CY2016	us-gaap	Costs And Expenses CostsAndExpenses	2139399000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	3317823000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	3715739000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	58616000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	48339000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2817000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	27536000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	38602000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	45042000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	97444000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	87375000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	54828000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	11292000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	434000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6969000	USD
CY2017Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3323062000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2312092000	USD
CY2018Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0417
CY2017Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	44217000	USD
CY2018Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	30405000	USD
CY2017Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	3278845000	USD
CY2018Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	2281687000	USD
CY2016	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	100000	USD
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	400000	USD
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	1700000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-61000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-176046000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	12462000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1626000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-25898000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-13795000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	31067000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	34494000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2036000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-216307000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-75000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	415214000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	320995000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	206338000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	214687000	USD
CY2016	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-2648000	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-217414000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	1524000	USD
CY2017Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	1630198000	USD
CY2018Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	1745244000	USD
CY2017Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	16205000	USD
CY2018Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	21194000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-349000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-14363000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1258000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	195169000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	144867000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	30236000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	14092000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	24874000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	19653000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3200000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3192000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4100000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4066000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	223237000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	180194000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	372542000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	214580000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6584000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	61068000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	35126000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	41926000	USD
CY2017Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	118868000	USD
CY2018Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	96033000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-5797000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-5861000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-5738000	USD
CY2016	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-200000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-350000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-340000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	97525000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	75653000	USD
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0178
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0178
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0181
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0245
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0267
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0266
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0258
CY2015Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	35870000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	38400000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	45450000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	44890000	USD
CY2016	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1640000	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	920000	USD
CY2018	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1400000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	3000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	200000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	12100000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	1200000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	2100000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	1700000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	1600000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	1500000	USD
CY2016	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	375000	USD
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	360000	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	475000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	14465000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	18475000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	19460000	USD
CY2016	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-940000	USD
CY2017	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	4555000	USD
CY2018	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-1765000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-23935000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-26975000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-25430000	USD
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	850000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	765000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	840000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3455000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3575000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3850000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	1400000	USD
CY2016	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2780000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2820000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3145000	USD
CY2016	us-gaap	Defined Benefit Plan Special Termination Benefits DefinedBenefitPlanSpecialTerminationBenefits	0	USD
CY2017	us-gaap	Defined Benefit Plan Special Termination Benefits DefinedBenefitPlanSpecialTerminationBenefits	-860000	USD
CY2018	us-gaap	Defined Benefit Plan Special Termination Benefits DefinedBenefitPlanSpecialTerminationBenefits	-950000	USD
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	22900000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	29800000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	36700000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.04
CY2018	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Amount DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount	7200	USD
CY2016	us-gaap	Depreciation Depreciation	37172000	USD
CY2017	us-gaap	Depreciation Depreciation	63897000	USD
CY2018	us-gaap	Depreciation Depreciation	68592000	USD
CY2018	us-gaap	Depreciation Depreciation	68600000	USD
CY2016	us-gaap	Depreciation And Amortization DepreciationAndAmortization	61969000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	240171000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	255601000	USD
CY2017Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	3860000	USD
CY2018Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-12623000	USD
CY2016	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	7900000	USD
CY2017	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	7100000	USD
CY2018	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	8500000	USD
CY2017Q4	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	142	outstanding_contract
CY2018Q4	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	142	outstanding_contract
CY2016	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	0	USD
CY2017	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	0	USD
CY2018	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	45447000	USD
CY2015Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	0	USD
CY2016Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	0	USD
CY2017Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	10000000	USD
CY2018Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	0	USD
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.34
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.35
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.31
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.33
CY2016	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-5640000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25902000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-6489000	USD
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.329
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.026
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.324
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0.131
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0.122
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.061
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.002
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.030
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.005
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.038
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Disposition Of Business EffectiveIncomeTaxRateReconciliationDispositionOfBusiness	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.059
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.106
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.026
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.079
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.009
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.011
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	-0.035
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.027
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.012
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.035
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.038
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.110
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.053
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.023
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.036
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.000
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.032
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.028
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.157
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	120278000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	143803000	USD
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	79100000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	190960000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	350296000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	129394000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	92801000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	102338000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	122756000	USD
CY2017	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	20724000	USD
CY2018	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	-27994000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	116767000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1482982000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1392861000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1292022000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1042565000	USD
CY2017	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	1600190000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-400000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-5500000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	9200000	USD
CY2016	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2017	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	45447000	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	2500000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017Q4	us-gaap	Goodwill Goodwill	2987294000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	2923136000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2457791000	USD
CY2017	us-gaap	Goodwill Transfers GoodwillTransfers	-212994000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2016Q4	us-gaap	Goodwill Goodwill	738453000	USD
CY2017	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	4044000	USD
CY2018	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	28420000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	182178000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-135757000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	34159000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	106253000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	7940000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	146962000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	288431000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-127817000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	181121000	USD
CY2017	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	900000	USD
CY2018	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	700000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	94849000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-131096000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	58665000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	86300000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	76100000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	95800000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	56440000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	186811000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	55235000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	68661000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	368516000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	115003000	USD
CY2016	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	18673000	USD
CY2017	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	61393000	USD
CY2018	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	31247000	USD
CY2016	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	97979000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	382852000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	187147000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-20005000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	18529000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-11456000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	21604000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-13251000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	50551000	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1249000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1324000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1295000	shares
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1292022000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1042565000	USD
CY2016	us-gaap	Interest Expense InterestExpense	27565000	USD
CY2017	us-gaap	Interest Expense InterestExpense	127947000	USD
CY2018	us-gaap	Interest Expense InterestExpense	126774000	USD
CY2016	us-gaap	Interest Income Operating InterestIncomeOperating	2449000	USD
CY2017	us-gaap	Interest Income Operating InterestIncomeOperating	3011000	USD
CY2018	us-gaap	Interest Income Operating InterestIncomeOperating	2566000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	23400000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	98500000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	117500000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	6299708000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	5350717000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7283173000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6201474000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2822585000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2620935000	USD
CY2017Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	145845000	USD
CY2018Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	379721000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	165578000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	800000000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	102600000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1230000000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	37600000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	139700000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2899124000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2116109000	USD
CY2017Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	29100000	USD
CY2018Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	9000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-174686000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2539830000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1257115000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-98059000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2752545000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	384051000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	365632000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	254517000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	471158000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	193582000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	3279000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	122456000	USD
CY2018Q4	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	100	country
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2017	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	45871000	USD
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	19619000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	305141000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-6329000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	259715000	USD
CY2017Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	115840000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	165374000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	1278328000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	130991000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	106113000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	111117000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	118945000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	121802000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	689360000	USD
CY2018	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	372000000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	38000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	87900000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	93500000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	134421000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	183222000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	65150000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	46222000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	193742000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	156369000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1670000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3892000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-10844000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5986000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	47363000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-31245000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5281000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	51191000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-41966000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5281000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	51191000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-41966000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	965000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	64000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-123000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	2483000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-7770000	USD
CY2017Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	205260000	USD
CY2018Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	235016000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	577999000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	613673000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	8406000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3448000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	167000	USD
CY2016	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	49863000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	110765000	USD
CY2018	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	126873000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	58961000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	41272000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	41300000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	260832000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	260800000	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4975000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	51200000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	51171000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	48196000	USD
CY2017Q4	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2640000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2641780000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	15855000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	23935000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	26975000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	25430000	USD
CY2016	us-gaap	Pension Expense PensionExpense	3500000	USD
CY2017	us-gaap	Pension Expense PensionExpense	3600000	USD
CY2018	us-gaap	Pension Expense PensionExpense	3900000	USD
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	124632000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	165237000	USD
CY2016	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	526779000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	715000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3025000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	9250000	USD
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	11711000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	14689000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	432019000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	514362000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	221507000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	267665000	USD
CY2017	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-5320000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	61585000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	835000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	404438000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1010972000	USD
CY2015Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	13505000	USD
CY2016Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	25121000	USD
CY2017Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	15148000	USD
CY2018Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	2295000	USD
CY2015Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	25626000	USD
CY2016Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2017Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	3002000	USD
CY2018Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2016	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	288431000	USD
CY2017	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	-127817000	USD
CY2018	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	181121000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1647284000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1755432000	USD
CY2016	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2444540000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3311494000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3975454000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2700000000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1620400000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	874500000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	186500000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1089184000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1599004000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1884141000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	46661000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	78943000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	66172000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	P1Y1M
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	4900000	shares
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	10339000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	10181000	USD
CY2018Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1200000000	USD
CY2018Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	900000000	USD
CY2016	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	51762000	USD
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	41272000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	275834000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	-132400000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	60878000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	983465000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	850757000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	46758000	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	19725000	USD
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	72779205	shares
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	1278000	USD
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	73899977	shares
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2426792000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2688600000	USD
CY2018Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	171000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37099000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	60300000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	60269000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	90349000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	10613000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	90300000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	3939000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1769000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	472000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	6400000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	6700000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	10883000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	27371000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	1738000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	24299000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	14691000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1368000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	6293000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	86200000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-6200000	USD
CY2015Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	6900000	USD
CY2016Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	7400000	USD
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	12700000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	7700000	USD
CY2016	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	4750000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	16600000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	12500000	USD
CY2016	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	4850000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	5500000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2016	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	9100000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	16800000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	11300000	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	83820000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	89790000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92122000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	82571000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	88466000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	90827000	shares
CY2017	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	6100000	USD
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Assets that may subject the Company to concentration of credit risk consist primarily of short-term, highly liquid investments classified as cash equivalents, fees receivable, contract assets, interest rate swaps and a pension reinsurance asset. The majority of the Company’s cash equivalent investments and its interest rate swap contracts are with investment grade commercial banks. Fees receivable and contract asset balances deemed to be collectible from customers have limited concentration of credit risk due to our diverse customer base and geographic dispersion. The Company’s pension reinsurance asset (see Note 13 — Employee Benefits) is maintained with a large international insurance company that was rated investment grade as of December 31, </font><font style="font-family:inherit;font-size:10pt;">2018</font><font style="font-family:inherit;font-size:10pt;"> and 2017.</font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of the accompanying consolidated financial statements requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of fees receivable, goodwill, intangible assets and other long-lived assets, as well as tax accruals and other liabilities. In addition, estimates are used in revenue recognition, income tax expense or benefit, performance-based compensation charges, depreciation and amortization. Management believes its use of estimates in the accompanying consolidated financial statements to be reasonable.</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Management continually evaluates and revises its estimates using historical experience and other factors, including the general economic environment and actions it may take in the future. Management adjusts these estimates when facts and circumstances dictate. However, these estimates may involve significant uncertainties and judgments and cannot be determined with precision. In addition, these estimates are based on management’s best judgment at a point in time. As a result, differences between our estimates and actual results could be material and would be reflected in the Company’s consolidated financial statements in future periods.</font></div></div>

Files In Submission

Name	View Source	Status
0000749251-19-000005-index-headers.html	Edgar Link	pending
0000749251-19-000005-index.html	Edgar Link	pending
0000749251-19-000005.txt	Edgar Link	pending
0000749251-19-000005-xbrl.zip	Edgar Link	pending
a2014longtermincentiveplan.htm	Edgar Link	pending
amendedemploymentagreement.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
formofpsuagreement2019.htm	Edgar Link	pending
formofsaragreement2019.htm	Edgar Link	pending
it-12312018x10k.htm	Edgar Link	pending
it-12312018xex211.htm	Edgar Link	pending
it-12312018xex231.htm	Edgar Link	pending
it-12312018xex311.htm	Edgar Link	pending
it-12312018xex312.htm	Edgar Link	pending
it-12312018xex32.htm	Edgar Link	pending
it-20181231.xml	Edgar Link	completed
it-20181231.xsd	Edgar Link	pending
it-20181231_cal.xml	Edgar Link	unprocessable
it-20181231_def.xml	Edgar Link	unprocessable
it-20181231_lab.xml	Edgar Link	unprocessable
it-20181231_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$IT
GARTNER INC Stock $it

2018 Q4 Form 10-K Financial Statement

#000074925119000005 Filed on February 22, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IT GARTNER INC Stock $it

2018 Q4 Form 10-K Financial Statement

#000074925119000005 Filed on February 22, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IT
GARTNER INC Stock $it