$CMC
COMMERCIAL METALS Co Stock $cmc

$cmc Overview Financials Valuation SEC Filings Company Website

2018 Form 10-K Financial Statement

#000002244418000035 Filed on October 25, 2018

Income Statement

Concept	2018	2017 Q3	2017 Q2
Revenue	$4.644B	$1.261B	$1.261B
YoY Change	1.62%	14.36%	13.5%
Cost Of Revenue	$4.022B	$977.1M	$896.3M
YoY Change	21.03%	1078.65%	-14.8%
Gross Profit	$622.2M	$119.3M	$148.4M
YoY Change	-50.11%	-24.7%	-9.68%
Gross Profit Margin	13.4%	9.46%	11.77%
Selling, General & Admin	$401.5M	$105.0M	$93.42M
YoY Change	3.64%	43.64%	-18.66%
% of Gross Profit	64.53%	88.02%	62.93%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$131.7M	$32.10M	$32.20M
YoY Change	5.27%	1.9%	0.94%
% of Gross Profit	21.16%	26.91%	21.69%
Operating Expenses	$401.5M	$105.0M	$93.42M
YoY Change	3.64%	43.64%	-18.66%
Operating Profit	$220.7M	$14.29M	$55.02M
YoY Change	-74.32%	-83.25%	11.16%
Interest Expense	$40.96M	$6.400M	$12.45M
YoY Change	-7.23%	-135.16%	-15.53%
% of Operating Profit	18.56%	44.8%	22.62%
Other Income/Expense, Net
YoY Change
Pretax Income	$86.73M	-$16.00M	$42.57M
YoY Change	240.04%	-20.4%	-7.02%
Income Tax	$30.15M	-$6.000M	$11.01M
% Of Pretax Income	34.76%		25.85%
Net Earnings	$138.5M	-$29.54M	$39.27M
YoY Change	198.94%	22449.62%	103.16%
Net Earnings / Revenue	2.98%	-2.34%	3.11%
Basic Earnings Per Share	$1.19	-$0.25	$0.34
Diluted Earnings Per Share	$1.17	-$0.25	$0.34
COMMON SHARES
Basic Shares Outstanding	116.8M shares		115.9M shares
Diluted Shares Outstanding	118.1M shares		117.2M shares

Balance Sheet

Concept	2018	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$622.5M	$252.6M	$275.8M
YoY Change	146.44%	-51.19%	-43.0%
Cash & Equivalents	$622.5M	$285.9M	$275.8M
Short-Term Investments
Other Short-Term Assets	$116.2M	$140.1M	$108.2M
YoY Change	-73.42%	26.86%	-25.33%
Inventory	$589.0M	$462.6M	$798.0M
Prepaid Expenses
Receivables	$749.5M	$561.4M	$870.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$2.077B	$1.714B	$2.052B
YoY Change	21.2%	-16.32%	1.02%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.075B	$1.052B	$1.017B
YoY Change	2.22%	17.5%	14.24%
Goodwill		$64.92M	$66.76M
YoY Change		-2.2%	0.65%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$97.70M	$144.6M	$139.0M
YoY Change	-25.93%	19.22%	12.96%
Total Long-Term Assets	$1.251B	$1.261B	$1.223B
YoY Change	-0.8%	16.48%	13.26%
TOTAL ASSETS
Total Short-Term Assets	$2.077B	$1.714B	$2.052B
Total Long-Term Assets	$1.251B	$1.261B	$1.223B
Total Assets	$3.328B	$2.975B	$3.275B
YoY Change	11.87%	-4.97%	5.27%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$261.3M	$226.5M	$346.5M
YoY Change	15.36%	-6.98%	46.39%
Accrued Expenses	$242.3M	$275.0M	$258.3M
YoY Change	-4.79%	4.52%	9.44%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$19.70M	$19.20M	$311.7M
YoY Change	2.6%	-93.88%	2759.63%
Total Short-Term Liabilities	$541.9M	$608.4M	$916.5M
YoY Change	-10.93%	-25.9%	88.05%
LONG-TERM LIABILITIES
Long-Term Debt	$1.139B	$805.6M	$751.7M
YoY Change	41.34%	6.29%	-29.6%
Other Long-Term Liabilities	$116.3M	$111.0M	$126.9M
YoY Change	4.77%	-8.51%	9.52%
Total Long-Term Liabilities	$1.255B	$111.0M	$126.9M
YoY Change	36.91%	-8.51%	9.52%
TOTAL LIABILITIES
Total Short-Term Liabilities	$541.9M	$608.4M	$916.5M
Total Long-Term Liabilities	$1.255B	$111.0M	$126.9M
Total Liabilities	$1.835B	$1.574B	$1.857B
YoY Change	16.55%	-10.73%	6.26%
SHAREHOLDERS EQUITY
Retained Earnings		$1.364B	$1.407B
YoY Change		-0.67%	1.47%
Common Stock		$350.5M	$339.8M
YoY Change		-2.64%	-4.7%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$232.1M	$232.2M
YoY Change		-8.21%	-8.23%
Treasury Stock Shares		13.27M shares	13.27M shares
Shareholders Equity	$1.493B	$1.401B	$1.418B
YoY Change
Total Liabilities & Shareholders Equity	$3.328B	$2.975B	$3.275B
YoY Change	11.87%	-4.97%	5.27%

Cashflow Statement

Concept	2018	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	$138.5M	-$29.54M	$39.27M
YoY Change	198.94%	22449.62%	103.16%
Depreciation, Depletion And Amortization	$131.7M	$32.10M	$32.20M
YoY Change	5.27%	1.9%	0.94%
Cash From Operating Activities	-$433.9M	-$542.2M	$6.900M
YoY Change	-17.08%	-777.75%	-96.04%
INVESTING ACTIVITIES
Capital Expenditures	$174.7M	-$51.00M	-$71.30M
YoY Change	-18.05%	-13.27%	69.36%
Acquisitions	$6.980M
YoY Change	-87.55%
Other Investing Activities	$696.6M	$853.3M	-$41.90M
YoY Change	-13.82%	1448.64%	-8480.0%
Cash From Investing Activities	$521.9M	$802.3M	-$113.2M
YoY Change	-12.3%	-21213.16%	172.12%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$0.00
YoY Change
Debt Paid & Issued, Net	$19.97M
YoY Change	-97.2%
Cash From Financing Activities	$259.4M	-271.3M	-13.90M
YoY Change	-179.95%	1243.07%	-54.72%
NET CHANGE
Cash From Operating Activities	-$433.9M	-542.2M	6.900M
Cash From Investing Activities	$521.9M	802.3M	-113.2M
Cash From Financing Activities	$259.4M	-271.3M	-13.90M
Net Change In Cash	$346.7M	-11.20M	-120.2M
YoY Change	-236.61%	-120.0%	-218.07%
FREE CASH FLOW
Cash From Operating Activities	-$433.9M	-$542.2M	$6.900M
Capital Expenditures	$174.7M	-$51.00M	-$71.30M
Free Cash Flow	-$608.6M	-$491.2M	$78.20M
YoY Change	-17.36%	-453.89%	-63.83%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2016	cmc	Adjusted Operating Profit Loss From Continuing Operation AdjustedOperatingProfitLossFromContinuingOperation	305237000	USD
CY2017	cmc	Adjusted Operating Profit Loss From Continuing Operation AdjustedOperatingProfitLossFromContinuingOperation	235822000	USD
CY2018	cmc	Adjusted Operating Profit Loss From Continuing Operation AdjustedOperatingProfitLossFromContinuingOperation	352221000	USD
CY2017Q4	cmc	Annual Melt Capacity AnnualMeltCapacity	7200000	t
CY2016	cmc	Asset Impairment Charges From Continuing Operations AssetImpairmentChargesFromContinuingOperations	40028000	USD
CY2017	cmc	Asset Impairment Charges From Continuing Operations AssetImpairmentChargesFromContinuingOperations	1730000	USD
CY2018	cmc	Asset Impairment Charges From Continuing Operations AssetImpairmentChargesFromContinuingOperations	14372000	USD
CY2017Q3	cmc	Brp Liability BRPLiability	12005000	USD
CY2018Q3	cmc	Brp Liability BRPLiability	15301000	USD
CY2018	cmc	Blended Federal Statutory Income Tax Rate Percent BlendedFederalStatutoryIncomeTaxRatePercent	0.257	pure
CY2018	cmc	Bonus Depreciationfor Certain Capital Expenditures Percent BonusDepreciationforCertainCapitalExpendituresPercent	1	pure
CY2016	cmc	Capital Lease Obligations Incurredandchangesinaccountspayablesrelatedtopropertyplantandequipment CapitalLeaseObligationsIncurredandchangesinaccountspayablesrelatedtopropertyplantandequipment	29763000	USD
CY2017	cmc	Capital Lease Obligations Incurredandchangesinaccountspayablesrelatedtopropertyplantandequipment CapitalLeaseObligationsIncurredandchangesinaccountspayablesrelatedtopropertyplantandequipment	51330000	USD
CY2018	cmc	Capital Lease Obligations Incurredandchangesinaccountspayablesrelatedtopropertyplantandequipment CapitalLeaseObligationsIncurredandchangesinaccountspayablesrelatedtopropertyplantandequipment	32274000	USD
CY2016	cmc	Current Federal Tax Expense Benefit From Continuing And Discontinued Operations CurrentFederalTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	5224000	USD
CY2017	cmc	Current Federal Tax Expense Benefit From Continuing And Discontinued Operations CurrentFederalTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	11345000	USD
CY2018	cmc	Current Federal Tax Expense Benefit From Continuing And Discontinued Operations CurrentFederalTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	20210000	USD
CY2016	cmc	Current Foreign Tax Expense Benefit From Continuing And Discontinued Operations CurrentForeignTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	6991000	USD
CY2017	cmc	Current Foreign Tax Expense Benefit From Continuing And Discontinued Operations CurrentForeignTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	9464000	USD
CY2018	cmc	Current Foreign Tax Expense Benefit From Continuing And Discontinued Operations CurrentForeignTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	18308000	USD
CY2016	cmc	Current Income Tax Expense Benefit From Continuing And Discontinued Operations CurrentIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	16345000	USD
CY2017	cmc	Current Income Tax Expense Benefit From Continuing And Discontinued Operations CurrentIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	23463000	USD
CY2018	cmc	Current Income Tax Expense Benefit From Continuing And Discontinued Operations CurrentIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	40781000	USD
CY2016	cmc	Current State And Local Tax Expense Benefit From Continuing And Discontinued Operations CurrentStateAndLocalTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	4130000	USD
CY2017	cmc	Current State And Local Tax Expense Benefit From Continuing And Discontinued Operations CurrentStateAndLocalTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	2654000	USD
CY2018	cmc	Current State And Local Tax Expense Benefit From Continuing And Discontinued Operations CurrentStateAndLocalTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	2263000	USD
CY2016	cmc	Deferred Federal Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredFederalIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-4423000	USD
CY2017	cmc	Deferred Federal Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredFederalIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-13548000	USD
CY2018	cmc	Deferred Federal Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredFederalIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-11501000	USD
CY2016	cmc	Deferred Foreign Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredForeignIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	254000	USD
CY2017	cmc	Deferred Foreign Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredForeignIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-917000	USD
CY2018	cmc	Deferred Foreign Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredForeignIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-169000	USD
CY2016	cmc	Deferred Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-3866000	USD
CY2017	cmc	Deferred Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-14184000	USD
CY2018	cmc	Deferred Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	-10668000	USD
CY2016	cmc	Deferred State And Local Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredStateAndLocalIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	303000	USD
CY2017	cmc	Deferred State And Local Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredStateAndLocalIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	281000	USD
CY2018	cmc	Deferred State And Local Income Tax Expense Benefit From Continuing And Discontinued Operations DeferredStateAndLocalIncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	1002000	USD
CY2016	cmc	Depreciation Amortization And Asset Impairment Charges DepreciationAmortizationAndAssetImpairmentCharges	-126259000	USD
CY2017	cmc	Depreciation Amortization And Asset Impairment Charges DepreciationAmortizationAndAssetImpairmentCharges	-124490000	USD
CY2018	cmc	Depreciation Amortization And Asset Impairment Charges DepreciationAmortizationAndAssetImpairmentCharges	-131508000	USD
CY2016	cmc	Disposal Group Including Discontinued Operations Impairment DisposalGroupIncludingDiscontinuedOperationsImpairment	15800000	USD
CY2017	cmc	Disposal Group Including Discontinued Operations Impairment DisposalGroupIncludingDiscontinuedOperationsImpairment	4200000	USD
CY2018	cmc	Disposal Group Including Discontinued Operations Impairment DisposalGroupIncludingDiscontinuedOperationsImpairment	2100000	USD
CY2016	cmc	Effective Income Tax Rate Reconciliation Impairmenton Valuationof Subsidiaries EffectiveIncomeTaxRateReconciliationImpairmentonValuationofSubsidiaries	60204000	USD
CY2017	cmc	Effective Income Tax Rate Reconciliation Impairmenton Valuationof Subsidiaries EffectiveIncomeTaxRateReconciliationImpairmentonValuationofSubsidiaries	92321000	USD
CY2018	cmc	Effective Income Tax Rate Reconciliation Impairmenton Valuationof Subsidiaries EffectiveIncomeTaxRateReconciliationImpairmentonValuationofSubsidiaries	-22315000	USD
CY2016	cmc	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Tax Balances EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxBalances	0	USD
CY2017	cmc	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Tax Balances EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxBalances	0	USD
CY2018	cmc	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Tax Balances EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxBalances	25515000	USD
CY2016	cmc	Effective Income Tax Rate Reconciliation Toll Chargeand Related Foreign Tax Credits EffectiveIncomeTaxRateReconciliationTollChargeandRelatedForeignTaxCredits	0	USD
CY2017	cmc	Effective Income Tax Rate Reconciliation Toll Chargeand Related Foreign Tax Credits EffectiveIncomeTaxRateReconciliationTollChargeandRelatedForeignTaxCredits	0	USD
CY2018	cmc	Effective Income Tax Rate Reconciliation Toll Chargeand Related Foreign Tax Credits EffectiveIncomeTaxRateReconciliationTollChargeandRelatedForeignTaxCredits	29466000	USD
CY2016	cmc	Effective Income Tax Rate Reconciliationdeferredcompensation EffectiveIncomeTaxRateReconciliationdeferredcompensation	-1375000	USD
CY2017	cmc	Effective Income Tax Rate Reconciliationdeferredcompensation EffectiveIncomeTaxRateReconciliationdeferredcompensation	-2101000	USD
CY2018	cmc	Effective Income Tax Rate Reconciliationdeferredcompensation EffectiveIncomeTaxRateReconciliationdeferredcompensation	-2036000	USD
CY2016	cmc	Effective Tax Rate Reconciliation Worthless Stock Amount EffectiveTaxRateReconciliationWorthlessStockAmount	0	USD
CY2017	cmc	Effective Tax Rate Reconciliation Worthless Stock Amount EffectiveTaxRateReconciliationWorthlessStockAmount	0	USD
CY2018	cmc	Effective Tax Rate Reconciliation Worthless Stock Amount EffectiveTaxRateReconciliationWorthlessStockAmount	-6084000	USD
CY2017	cmc	Goodwill Acquired During Period Gross GoodwillAcquiredDuringPeriodGross	306000	USD
CY2018	cmc	Goodwill Gross Disposedof During Period GoodwillGrossDisposedofDuringPeriod	-208000	USD
CY2017	cmc	Goodwill Gross Foreign Currency Translation Gain Loss GoodwillGrossForeignCurrencyTranslationGainLoss	232000	USD
CY2018	cmc	Goodwill Gross Foreign Currency Translation Gain Loss GoodwillGrossForeignCurrencyTranslationGainLoss	-96000	USD
CY2018	cmc	Goodwill Gross Impairment Loss GoodwillGrossImpairmentLoss	515000	USD
CY2018	cmc	Goodwill Gross Reclassificationto Assetsof Discontinued Operations GoodwillGrossReclassificationtoAssetsofDiscontinuedOperations	1982000	USD
CY2018	cmc	Goodwill Impairment Dispositions GoodwillImpairmentDispositions	208000	USD
CY2018	cmc	Goodwill Impairment Reclassificationto Assetsof Discontinued Operations GoodwillImpairmentReclassificationtoAssetsofDiscontinuedOperations	1982000	USD
CY2017	cmc	Goodwillimpairmentforeigncurrencytranslationgainloss Goodwillimpairmentforeigncurrencytranslationgainloss	-14000	USD
CY2018	cmc	Goodwillimpairmentforeigncurrencytranslationgainloss Goodwillimpairmentforeigncurrencytranslationgainloss	6000	USD
CY2016	cmc	Income Tax Expense Benefit From Continuing And Discontinued Operations IncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	12479000	USD
CY2017	cmc	Income Tax Expense Benefit From Continuing And Discontinued Operations IncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	9279000	USD
CY2018	cmc	Income Tax Expense Benefit From Continuing And Discontinued Operations IncomeTaxExpenseBenefitFromContinuingAndDiscontinuedOperations	30113000	USD
CY2016	cmc	Incometaxreconciliationtaxreorganization Incometaxreconciliationtaxreorganization	-10264000	USD
CY2017	cmc	Incometaxreconciliationtaxreorganization Incometaxreconciliationtaxreorganization	-659000	USD
CY2018	cmc	Incometaxreconciliationtaxreorganization Incometaxreconciliationtaxreorganization	-3187000	USD
CY2016	cmc	Increase Decrease In Accounts Receivable Sold Repurchased IncreaseDecreaseInAccountsReceivableSoldRepurchased	-19472000	USD
CY2017	cmc	Increase Decrease In Accounts Receivable Sold Repurchased IncreaseDecreaseInAccountsReceivableSoldRepurchased	81731000	USD
CY2018	cmc	Increase Decrease In Accounts Receivable Sold Repurchased IncreaseDecreaseInAccountsReceivableSoldRepurchased	-77853000	USD
CY2016	cmc	Increase Decrease In Documentary Letters Of Credit IncreaseDecreaseInDocumentaryLettersOfCredit	-41468000	USD
CY2017	cmc	Increase Decrease In Documentary Letters Of Credit IncreaseDecreaseInDocumentaryLettersOfCredit	22000	USD
CY2018	cmc	Increase Decrease In Documentary Letters Of Credit IncreaseDecreaseInDocumentaryLettersOfCredit	18000	USD
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2017Q3	cmc	Longterm Debtand Capital Lease Obligations Net LongtermDebtandCapitalLeaseObligationsNet	824762000	USD
CY2018Q3	cmc	Longterm Debtand Capital Lease Obligations Net LongtermDebtandCapitalLeaseObligationsNet	1158365000	USD
CY2018Q1	cmc	Minimum Percentage Of Share Ownership Deemed Affiliates MinimumPercentageOfShareOwnershipDeemedAffiliates	0.10	pure
CY2018Q3	cmc	Numberof Electric Arc Furnace Micro Mills NumberofElectricArcFurnaceMicroMills	2	micro_mill
CY2018Q3	cmc	Numberof Electric Arc Furnace Mini Mills NumberofElectricArcFurnaceMiniMills	4	mini_mill
CY2018	cmc	Numberof Fair Value Hierarchy NumberofFairValueHierarchy	3	levels
CY2016	cmc	Proceeds Paymentsfrom Issuanceof Sharesunder Incentiveand Sharebased Compensation Plans Including Tax Withholdings ProceedsPaymentsfromIssuanceofSharesunderIncentiveandSharebasedCompensationPlansIncludingTaxWithholdings	-6034000	USD
CY2017	cmc	Proceeds Paymentsfrom Issuanceof Sharesunder Incentiveand Sharebased Compensation Plans Including Tax Withholdings ProceedsPaymentsfromIssuanceofSharesunderIncentiveandSharebasedCompensationPlansIncludingTaxWithholdings	-5498000	USD
CY2018	cmc	Proceeds Paymentsfrom Issuanceof Sharesunder Incentiveand Sharebased Compensation Plans Including Tax Withholdings ProceedsPaymentsfromIssuanceofSharesunderIncentiveandSharebasedCompensationPlansIncludingTaxWithholdings	-9302000	USD
CY2017Q3	cmc	Severance Liability SeveranceLiability	16900000	USD
CY2018	cmc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit	11000000	USD
CY2018	cmc	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Deferred Tax Liability Provisional Income Tax Benefit TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxBenefit	37400000	USD
CY2017	cmc	Terminationofaccountsreceivables Terminationofaccountsreceivables	-1600000	USD
CY2018Q3	cmc	Total Debt Excluding Hedge Accounting Adjustment TotalDebtExcludingHedgeAccountingAdjustment	1170129000	USD
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--08-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-08-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000022444
CY2018Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	117025790	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
CY2018Q1	dei	Entity Public Float EntityPublicFloat	2819645907	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	COMMERCIAL METALS CO
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	750725338
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2018	dei	Trading Symbol TradingSymbol	CMC
CY2017Q3	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	226456000	USD
CY2018Q3	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	261258000	USD
CY2017Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	561411000	USD
CY2018Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	749484000	USD
CY2017Q3	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	4300000	USD
CY2018Q3	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	4000000	USD
CY2017Q3	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	30639000	USD
CY2018Q3	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	26946000	USD
CY2017Q3	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	2100000	USD
CY2018Q3	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	1900000	USD
CY2017Q3	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	21561000	USD
CY2018Q3	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	23462000	USD
CY2017Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	274972000	USD
CY2018Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	259022000	USD
CY2017Q3	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	76407000	USD
CY2018Q3	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	106123000	USD
CY2017Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1521016000	USD
CY2018Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1595834000	USD
CY2015Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-113535000	USD
CY2016Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-112914000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-81513000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-93677000	USD
CY2017Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	349258000	USD
CY2018Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	352674000	USD
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CY2017	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1638000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	15248000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	21278000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15001000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16168000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26400000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	30300000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23900000	USD
CY2017Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4186000	USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4489000	USD
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CY2018	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	0	USD
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CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2200000	USD
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CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
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CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	8238000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	15053000	USD
CY2017Q3	us-gaap	Assets Assets	2975131000	USD
CY2018Q3	us-gaap	Assets Assets	3328304000	USD
CY2017Q3	us-gaap	Assets Current AssetsCurrent	1713900000	USD
CY2018Q3	us-gaap	Assets Current AssetsCurrent	2077205000	USD
CY2017Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	297110000	USD
CY2018Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	710000	USD
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CY2018Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	631501000	USD
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CY2017Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	252595000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	622473000	USD
CY2015Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	485705000	USD
CY2016Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	539702000	USD
CY2017Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	285881000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	632615000	USD
CY2016	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	53997000	USD
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CY2016	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-1113000	USD
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CY2018	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	1530000	USD
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CY2018	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	-1530000	USD
CY2017Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.48
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CY2018Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
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CY2018Q3	us-gaap	Common Stock Value CommonStockValue	1290000	USD
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CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	126342000	USD
CY2017Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	258109000	USD
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CY2017Q3	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	43200000	USD
CY2018Q3	us-gaap	Contract Receivable Retainage ContractReceivableRetainage	41800000	USD
CY2016	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	3021862000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	3322711000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	4021558000	USD
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CY2017Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	832077000	USD
CY2018Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1170129000	USD
CY2017Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	7315000	USD
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CY2018Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	324491000	USD
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CY2018Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	55937000	USD
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CY2018Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	469000	USD
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CY2018Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	83879000	USD
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CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	131659000	USD
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CY2018Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	2288000	USD
CY2017Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	8510000	USD
CY2018Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1396000	USD
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CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	55514000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	56076000	USD
CY2016	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	14426000	USD
CY2017	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-14542000	USD
CY2018	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	7103000	USD
CY2016	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-8736000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-9840000	USD
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	3235000	USD
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CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-703000	USD
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CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
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CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	-1697000	USD
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CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	USD
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CY2018Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6480000	USD
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CY2018Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	20502000	USD
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CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-15600000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	2000000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1800000	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	2591000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-6049000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1322000	USD
CY2016	us-gaap	Gain Loss On Securitization Of Financial Assets GainLossOnSecuritizationOfFinancialAssets	-1700000	USD
CY2017	us-gaap	Gain Loss On Securitization Of Financial Assets GainLossOnSecuritizationOfFinancialAssets	-900000	USD
CY2018	us-gaap	Gain Loss On Securitization Of Financial Assets GainLossOnSecuritizationOfFinancialAssets	-1100000	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-11480000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-22672000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2016Q3	us-gaap	Goodwill Goodwill	66373000	USD
CY2017Q3	us-gaap	Goodwill Goodwill	64915000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	64310000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	306000	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	218000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-90000	USD
CY2016Q3	us-gaap	Goodwill Gross GoodwillGross	76772000	USD
CY2017Q3	us-gaap	Goodwill Gross GoodwillGross	77310000	USD
CY2018Q3	us-gaap	Goodwill Gross GoodwillGross	74509000	USD
CY2016Q3	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	10399000	USD
CY2017Q3	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	12395000	USD
CY2018Q3	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	10199000	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1982000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	515000	USD
CY2016Q4	us-gaap	Gross Profit GrossProfit	116389000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	137247000	USD
CY2017Q2	us-gaap	Gross Profit GrossProfit	148436000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	119286000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	143017000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	127167000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	168570000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	183411000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	55829000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	25506000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	86731000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	20148000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	39945000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	78653000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	75977000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	65451000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	165384000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	62001000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	50175000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	135237000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.54
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.43
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.16
CY2016	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.53
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.43
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.14
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-7239000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-3843000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	3269000	USD
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.06
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.03
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.03
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.06
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.03
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.03
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13976000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15276000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30147000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	75822000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	113135000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-20839000	USD
CY2016	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	4694000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	1407000	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	0	USD
CY2016	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-1719000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-7518000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-5973000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	26592000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22908000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	42471000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	0	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	18926000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	5053000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2042000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	407000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2185000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1490000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2317000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	1357000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	1034000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	4707000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	16063000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	19259000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	17414000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	50201000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	30963000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	7198000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-43577000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	93478000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-20163000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-142510000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	78527000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	10802000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-209555000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	98835000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	43198000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-12486000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	63785000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	15423000	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1412336	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1709942	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1323265	shares
CY2016	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	3600000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	9800000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	7300000	USD
CY2016	us-gaap	Interest Expense InterestExpense	62973000	USD
CY2017	us-gaap	Interest Expense InterestExpense	44151000	USD
CY2018	us-gaap	Interest Expense InterestExpense	40957000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	74715000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	65672000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	39972000	USD
CY2017Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	7735000	USD
CY2018Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	13840000	USD
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	1407000	USD
CY2017Q3	us-gaap	Inventory Net InventoryNet	462648000	USD
CY2018Q3	us-gaap	Inventory Net InventoryNet	589005000	USD
CY2017Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	116800000	USD
CY2018Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	19746000	USD
CY2018Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	177700000	USD
CY2016	us-gaap	Inventory Write Down InventoryWriteDown	15555000	USD
CY2017	us-gaap	Inventory Write Down InventoryWriteDown	21529000	USD
CY2017Q3	us-gaap	Land Land	81570000	USD
CY2018Q3	us-gaap	Land Land	85288000	USD
CY2017Q3	us-gaap	Liabilities Liabilities	1574201000	USD
CY2018Q3	us-gaap	Liabilities Liabilities	1834721000	USD
CY2017Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2975131000	USD
CY2018Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3328304000	USD
CY2017Q3	us-gaap	Liabilities Current LiabilitiesCurrent	608438000	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	541943000	USD
CY2017Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	87828000	USD
CY2018Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	1917000	USD
CY2017Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	805580000	USD
CY2018Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1138619000	USD
CY2017Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	19182000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	666239000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	19746000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	332860000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	123802000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	12256000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	15226000	USD
CY2017Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	1720299000	USD
CY2018Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	1918342000	USD
CY2017Q3	us-gaap	Minority Interest MinorityInterest	173000	USD
CY2018Q3	us-gaap	Minority Interest MinorityInterest	186000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-377718000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-324493000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	259432000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-153870000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-102587000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-70675000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	586865000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	174472000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	158680000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	54762000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	6275000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	30332000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	39266000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	-29540000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	46332000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	36810000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	10169000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	39965000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	51560000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	138506000	USD
CY2018	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Quantification NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification	-259000	USD
CY2016Q3	us-gaap	Noncurrent Assets NoncurrentAssets	987419000	USD
CY2017Q3	us-gaap	Noncurrent Assets NoncurrentAssets	1159876000	USD
CY2018Q3	us-gaap	Noncurrent Assets NoncurrentAssets	1172607000	USD
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	4	segments
CY2018Q3	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	65144000	USD
CY2018Q3	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	22714000	USD
CY2018Q3	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	6063000	USD
CY2018Q3	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	8338000	USD
CY2018Q3	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	10692000	USD
CY2018Q3	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	15477000	USD
CY2018Q3	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	1860000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	40700000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	37300000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	38000000	USD
CY2017Q3	us-gaap	Other Assets Current OtherAssetsCurrent	140136000	USD
CY2018Q3	us-gaap	Other Assets Current OtherAssetsCurrent	115533000	USD
CY2017Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	144639000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	111751000	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-132000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	439000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-138000	USD
CY2016	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-11771000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	30509000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-13938000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-58000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-70000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-62000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-9951000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	32190000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-14454000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-119000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-599000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-231000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	826000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	31477000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-11859000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-12597000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-968000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-2079000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	621000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	31401000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12164000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	86000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-523000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	74000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	1737000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	1355000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	279000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-104000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-154000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-126000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-140000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	27000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	273000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	1618000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	756000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	48000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1618000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	756000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	48000	USD
CY2017Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	111023000	USD
CY2018Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	116325000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	30595000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2016	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	11127000	USD
CY2017	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	22672000	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
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CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4449000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	5254000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	55342000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	55514000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	56076000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	56080000	USD
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CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	163332000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	213120000	USD
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CY2016	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	420300000	USD
CY2017	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	293600000	USD
CY2018	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	327700000	USD
CY2018Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1
CY2018Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	2000000	shares
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CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6049000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2510000	USD
CY2016	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-10432000	USD
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CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	762000	USD
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CY2017Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2572693000	USD
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CY2017Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1051677000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1075038000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6878000	USD
CY2016	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	400800000	USD
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CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	5113000	USD
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CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	8103000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	54762000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	46332000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	138506000	USD
CY2018	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-2563000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	211394000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	711850000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	19967000	USD
CY2016Q3	us-gaap	Restricted Cash RestrictedCash	22158000	USD
CY2017Q3	us-gaap	Restricted Cash RestrictedCash	33286000	USD
CY2018Q3	us-gaap	Restricted Cash RestrictedCash	10142000	USD
CY2017Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1363806000	USD
CY2018Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1446495000	USD
CY2016	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3596068000	USD
CY2016Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	852928000	USD
CY2017Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	862298000	USD
CY2017Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1044713000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1084130000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3844069000	USD
CY2017Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1076533000	USD
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1054268000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1204484000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1308438000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	4643723000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	383748000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	387354000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	401452000	USD
CY2017	us-gaap	Severance Costs1 SeveranceCosts1	17500000	USD
CY2018	us-gaap	Severance Costs1 SeveranceCosts1	6700000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	26335000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	30311000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	23929000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	21300000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	24400000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	30300000	USD
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	10862031	shares
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-6034000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-5373000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-9301000	USD
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CY2018Q3	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	27600000	USD
CY2016	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	30595000	USD
CY2017Q3	us-gaap	Stockholders Equity StockholdersEquity	1400757000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	1493397000	USD
CY2015Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1381374000	USD
CY2016Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1367431000	USD
CY2017Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1400930000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1493583000	USD
CY2017Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	13266928	shares
CY2018Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	12045106	shares
CY2017Q3	us-gaap	Treasury Stock Value TreasuryStockValue	232084000	USD
CY2018Q3	us-gaap	Treasury Stock Value TreasuryStockValue	213385000	USD
CY2018Q3	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	616800000	USD
CY2013Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	27349000	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	9522000	USD
CY2017Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	9283000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3121000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	17827000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	239000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	8028000	USD
CY2017Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1200000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3121000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1255000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	5400000	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	116623826	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	117364408	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	118145848	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	115211490	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	115654466	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	116822583	shares
CY2018	us-gaap	Nature Of Operations NatureOfOperations	<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;font-weight:bold;">NOTE 1. NATURE OF OPERATIONS</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;"> </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Nature of Operations</font><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;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As a vertically integrated organization, Commercial Metals Company ("CMC," and together with its consolidated subsidiaries, the "Company") manufactures, recycles, and markets steel and metal products, related materials and services through a network including </font><font style="font-family:inherit;font-size:10pt;">four</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">electric arc furnace ("EAF") mini mills</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">two</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">EAF micro mills</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">a</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">rerolling mill</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">steel fabrication and processing plants</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">construction-related product warehouses</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">metal recycling facilities</font><font style="font-family:inherit;font-size:10pt;"> in the </font><font style="font-family:inherit;font-size:10pt;">U.S. and Poland</font><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;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company has </font><font style="font-family:inherit;font-size:10pt;">four</font><font style="font-family:inherit;font-size:10pt;"> reportable segments: </font><font style="font-family:inherit;font-size:10pt;">Americas Recycling</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">Americas Mills</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">Americas Fabrication</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">International Mill</font><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;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Americas Recycling</font><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;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Americas Recycling segment processes scrap metals for use as a raw material by manufacturers of new metal products. This segment sells scrap metals to steel mills and foundries, aluminum sheet and ingot manufacturers, brass and bronze ingot makers, copper refineries and mills, secondary lead smelters, specialty steel mills, high temperature alloy manufacturers and other consumers. </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Americas Mills</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;"> </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;">The Americas Mills segment, through our </font><font style="font-family:inherit;font-size:10pt;">three</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">EAF mini mills</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">two</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">EAF micro mills</font><font style="font-family:inherit;font-size:10pt;">, and </font><font style="font-family:inherit;font-size:10pt;">rerolling mill</font><font style="font-family:inherit;font-size:10pt;">, manufactures finished long steel products including reinforcing bar ("rebar"), merchant bar, light structural, and other special sections as well as semi-finished billets for re-rolling and forging applications. This segment's products are sold to the construction, service center, transportation, steel warehousing, fabrication, energy, petrochemical and original equipment manufacturing industries. The Americas Mills segment also includes </font><font style="font-family:inherit;font-size:10pt;">eight</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;font-weight:normal;">scrap metal processing facilities</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">two</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;font-weight:normal;">scrap metal shredders</font><font style="font-family:inherit;font-size:10pt;"> that directly support the steel mills.</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Americas Fabrication</font><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;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Americas Fabrication segment consists of the Company's rebar fabrication operations, fence post manufacturing facilities, construction-related product facilities and facilities that heat-treat steel to strengthen and provide flexibility. Fabricated steel products are used primarily in the construction of commercial and non-commercial buildings, hospitals, convention centers, industrial plants, power plants, highways, bridges, arenas, stadiums and dams. </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">International Mill</font><font style="font-family:inherit;font-size:10pt;font-style:italic;"> </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The International Mill segment is comprised of the Company's mini mill, recycling and fabrication operations in Poland. This segment manufactures rebar, merchant bar, and wire rod as well as semi-finished billets. In addition, this segment's fabrication operations sell fabricated rebar, fabricated mesh, assembled rebar cages and other rebar by-products. The International Mill's products are sold primarily to fabricators, manufacturers, distributors and construction companies.</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;font-weight:bold;">Use of Estimates</font><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;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of the Company's consolidated financial statements in accordance with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of net sales and expenses during the reporting period. Significant items subject to such estimates and assumptions include the valuation of assets received in acquisitions; the carrying value of inventory and long-lived assets, including goodwill; valuation allowances for receivables and deferred income taxes; percentage of completion accounting method for revenue recognition; share-based compensation; potential litigation claims and settlements; environmental liabilities; and the carrying value of assets held for sale. Actual results could differ significantly from these estimates and assumptions.</font></div></div>

Files In Submission

Name	View Source	Status
0000022444-18-000035-index-headers.html	Edgar Link	pending
0000022444-18-000035-index.html	Edgar Link	pending
0000022444-18-000035.txt	Edgar Link	pending
0000022444-18-000035-xbrl.zip	Edgar Link	pending
cmc-20180831.xml	Edgar Link	completed
cmc-20180831.xsd	Edgar Link	pending
cmc-20180831_cal.xml	Edgar Link	unprocessable
cmc-20180831_def.xml	Edgar Link	unprocessable
cmc-20180831_lab.xml	Edgar Link	unprocessable
cmc-20180831_pre.xml	Edgar Link	unprocessable
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$CMC
COMMERCIAL METALS Co Stock $cmc

2018 Form 10-K Financial Statement

#000002244418000035 Filed on October 25, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMC COMMERCIAL METALS Co Stock $cmc

2018 Form 10-K Financial Statement

#000002244418000035 Filed on October 25, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMC
COMMERCIAL METALS Co Stock $cmc