$ATI
ATI INC Stock $ati

$ati Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000101896318000004 Filed on February 20, 2018

Income Statement

Concept	2017 Q4	2017 Q3	2017 Q2
Revenue	$909.9M	$869.1M	$880.2M
YoY Change	14.29%	12.8%	8.6%
Cost Of Revenue	$767.3M	$763.8M	$755.9M
YoY Change	9.8%	6.04%	-0.84%
Gross Profit	$142.6M	$105.3M	$124.3M
YoY Change	46.56%	109.76%	157.88%
Gross Profit Margin	15.67%	12.12%	14.12%
Selling, General & Admin	$60.50M	$64.60M	$65.00M
YoY Change	-7.35%	6.78%	9.61%
% of Gross Profit	42.43%	61.35%	52.29%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$40.10M	$40.10M	$40.30M
YoY Change	0.0%	-5.42%	-7.78%
% of Gross Profit	28.12%	38.08%	32.42%
Operating Expenses	$60.50M	$64.60M	$65.00M
YoY Change	-7.35%	6.78%	9.61%
Operating Profit	$82.10M	-$73.70M	$59.30M
YoY Change	156.56%	-85.23%	-590.08%
Interest Expense	-$31.60M	-$34.20M	-$34.50M
YoY Change	-3.66%	4.91%	13.86%
% of Operating Profit	-38.49%		-58.18%
Other Income/Expense, Net	-$13.10M	$200.0K	$200.0K
YoY Change	-2283.33%		-80.0%
Pretax Income	$400.0K	-$121.3M	$11.30M
YoY Change	-101.39%	-77.18%	-127.29%
Income Tax	-$700.0K	-$1.900M	-$2.100M
% Of Pretax Income	-175.0%		-18.58%
Net Earnings	$1.700M	-$121.2M	$10.10M
YoY Change	-82.83%	-77.17%	-153.72%
Net Earnings / Revenue	0.19%	-13.95%	1.15%
Basic Earnings Per Share	$0.01	-$1.12	$0.09
Diluted Earnings Per Share	$0.01	-$1.12	$0.09
COMMON SHARES
Basic Shares Outstanding	118.6M shares	108.9M shares	108.9M shares
Diluted Shares Outstanding		107.7M shares	128.3M shares

Balance Sheet

Concept	2017 Q4	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$141.6M	$124.9M	$154.6M
YoY Change	-38.33%	-33.78%	-52.08%
Cash & Equivalents	$141.6M	$124.9M	$154.6M
Short-Term Investments
Other Short-Term Assets	$52.70M	$52.20M	$30.70M
YoY Change	10.25%	27.94%	-29.1%
Inventory	$1.176B	$1.101B	$1.076B
Prepaid Expenses
Receivables	$545.3M	$525.9M	$538.6M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.916B	$1.804B	$1.800B
YoY Change	8.45%	2.38%	-7.8%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.496B	$2.491B	$2.492B
YoY Change	-0.13%	-0.93%	-15.77%
Goodwill	$531.4M	$531.9M	$643.5M
YoY Change	-17.21%	-17.46%	-0.53%
Intangibles
YoY Change
Long-Term Investments	$0.00	$0.00	$0.00
YoY Change
Other Assets	$242.6M	$248.2M	$250.4M
YoY Change	-7.65%	-8.55%	-17.31%
Total Long-Term Assets	$3.270B	$3.271B	$3.386B
YoY Change	-3.93%	-4.64%	-13.37%
TOTAL ASSETS
Total Short-Term Assets	$1.916B	$1.804B	$1.800B
Total Long-Term Assets	$3.270B	$3.271B	$3.386B
Total Assets	$5.185B	$5.075B	$5.186B
YoY Change	0.3%	-2.26%	-11.51%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$420.1M	$350.5M	$355.5M
YoY Change	42.75%	22.9%	15.35%
Accrued Expenses	$282.4M	$286.7M	$278.0M
YoY Change	-8.7%	-7.78%	-4.4%
Deferred Revenue	$69.70M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$10.10M	$36.40M	$67.50M
YoY Change	-90.39%	574.07%	907.46%
Total Short-Term Liabilities	$712.6M	$673.6M	$701.0M
YoY Change	0.55%	11.99%	15.73%
LONG-TERM LIABILITIES
Long-Term Debt	$1.531B	$1.878B	$1.877B
YoY Change	-13.62%	0.39%	0.35%
Other Long-Term Liabilities	$73.20M	$80.80M	$83.30M
YoY Change	-12.23%	-6.26%	-7.34%
Total Long-Term Liabilities	$73.20M	$80.80M	$83.30M
YoY Change	-12.23%	-6.26%	-7.34%
TOTAL LIABILITIES
Total Short-Term Liabilities	$712.6M	$673.6M	$701.0M
Total Long-Term Liabilities	$73.20M	$80.80M	$83.30M
Total Liabilities	$3.341B	$3.628B	$3.672B
YoY Change	-10.32%	-0.06%	-2.39%
SHAREHOLDERS EQUITY
Retained Earnings	$1.184B	$1.183B	$1.304B
YoY Change	-7.27%	-6.67%	-27.84%
Common Stock	$1.609B	$1.207B	$1.202B
YoY Change	34.11%	1.1%	1.11%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$26.10M	$25.90M	$25.40M
YoY Change	-6.79%	-7.17%	-8.3%
Treasury Stock Shares	838.0K shares	832.1K shares	815.5K shares
Shareholders Equity	$1.739B	$1.348B	$1.414B
YoY Change
Total Liabilities & Shareholders Equity	$5.185B	$5.075B	$5.186B
YoY Change	0.3%	-2.26%	-11.51%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	$1.700M	-$121.2M	$10.10M
YoY Change	-82.83%	-77.17%	-153.72%
Depreciation, Depletion And Amortization	$40.10M	$40.10M	$40.30M
YoY Change	0.0%	-5.42%	-7.78%
Cash From Operating Activities	$76.20M	$31.70M	$24.70M
YoY Change	12.06%	-140.59%	-11.47%
INVESTING ACTIVITIES
Capital Expenditures	-$37.40M	-$30.00M	-$30.50M
YoY Change	37.0%	1.35%	-59.76%
Acquisitions
YoY Change
Other Investing Activities	-$100.0K	-$100.0K	$700.0K
YoY Change	-200.0%	-133.33%	-30.0%
Cash From Investing Activities	-$37.50M	-$30.10M	-$29.80M
YoY Change	37.87%	2.73%	-60.16%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-22.00M	-31.30M	-100.0K
YoY Change	-5600.0%	18.11%	-100.05%
NET CHANGE
Cash From Operating Activities	76.20M	31.70M	24.70M
Cash From Investing Activities	-37.50M	-30.10M	-29.80M
Cash From Financing Activities	-22.00M	-31.30M	-100.0K
Net Change In Cash	16.70M	-29.70M	-5.200M
YoY Change	-59.47%	-77.82%	-103.14%
FREE CASH FLOW
Cash From Operating Activities	$76.20M	$31.70M	$24.70M
Capital Expenditures	-$37.40M	-$30.00M	-$30.50M
Free Cash Flow	$113.6M	$61.70M	$55.20M
YoY Change	19.2%	-227.22%	-46.77%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q4	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	25000000	USD
CY2015Q4	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	19400000	USD
CY2016Q4	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	9700000	USD
CY2017Q4	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	17300000	USD
CY2015	ati	Corporate Expenses CorporateExpenses	44700000	USD
CY2016	ati	Corporate Expenses CorporateExpenses	43400000	USD
CY2017	ati	Corporate Expenses CorporateExpenses	50500000	USD
CY2016Q4	ati	Deferred Tax Liabilities Inventory DeferredTaxLiabilitiesInventory	77600000	USD
CY2017Q4	ati	Deferred Tax Liabilities Inventory DeferredTaxLiabilitiesInventory	50000000	USD
CY2015	ati	Effective Income Tax Rate Reconciliation Foreign Exchange EffectiveIncomeTaxRateReconciliationForeignExchange	0	USD
CY2016	ati	Effective Income Tax Rate Reconciliation Foreign Exchange EffectiveIncomeTaxRateReconciliationForeignExchange	0	USD
CY2017	ati	Effective Income Tax Rate Reconciliation Foreign Exchange EffectiveIncomeTaxRateReconciliationForeignExchange	2600000	USD
CY2015	ati	Effective Income Tax Rate Reconciliation Withholding Taxes EffectiveIncomeTaxRateReconciliationWithholdingTaxes	0	USD
CY2016	ati	Effective Income Tax Rate Reconciliation Withholding Taxes EffectiveIncomeTaxRateReconciliationWithholdingTaxes	0	USD
CY2017	ati	Effective Income Tax Rate Reconciliation Withholding Taxes EffectiveIncomeTaxRateReconciliationWithholdingTaxes	2200000	USD
CY2015	ati	Employee Stock Plans EmployeeStockPlans	-12200000	USD
CY2016Q4	ati	Entity Wide Disclosure On Geographic Areas Total Assets Attributed To Individual Countries Percentage Amount EntityWideDisclosureOnGeographicAreasTotalAssetsAttributedToIndividualCountriesPercentageAmount	1
CY2017Q4	ati	Entity Wide Disclosure On Geographic Areas Total Assets Attributed To Individual Countries Percentage Amount EntityWideDisclosureOnGeographicAreasTotalAssetsAttributedToIndividualCountriesPercentageAmount	1
CY2016	ati	Employee Stock Plans EmployeeStockPlans	-18300000	USD
CY2017	ati	Employee Stock Plans EmployeeStockPlans	-12400000	USD
CY2017Q4	ati	Environmental Remediation Obligation Federal Superfund Sites EnvironmentalRemediationObligationFederalSuperfundSites	2000000	USD
CY2017Q4	ati	Environmental Remediation Obligation For Formerly Owned Sites EnvironmentalRemediationObligationForFormerlyOwnedSites	8000000	USD
CY2017	ati	Employees Percent Coveredby Collective Bargaining Agreements EmployeesPercentCoveredbyCollectiveBargainingAgreements	0.40
CY2017	ati	Employees Percent Non U.S. EmployeesPercentNonU.S.	0.15
CY2015	ati	Entity Wide Disclosure On Geographic Areas Revenue From External Foreign Customers Attributed To Entitys Country Of Domicile EntityWideDisclosureOnGeographicAreasRevenueFromExternalForeignCustomersAttributedToEntitysCountryOfDomicile	1215800000	USD
CY2016	ati	Entity Wide Disclosure On Geographic Areas Revenue From External Foreign Customers Attributed To Entitys Country Of Domicile EntityWideDisclosureOnGeographicAreasRevenueFromExternalForeignCustomersAttributedToEntitysCountryOfDomicile	971400000	USD
CY2017	ati	Entity Wide Disclosure On Geographic Areas Revenue From External Foreign Customers Attributed To Entitys Country Of Domicile EntityWideDisclosureOnGeographicAreasRevenueFromExternalForeignCustomersAttributedToEntitysCountryOfDomicile	1078600000	USD
CY2015Q4	ati	Entity Wide Disclosure On Geographic Areas Total Assets Attributed To Individual Countries Percentage Amount EntityWideDisclosureOnGeographicAreasTotalAssetsAttributedToIndividualCountriesPercentageAmount	1
CY2017Q4	ati	Environmental Remediation Obligation For Owned Or Controlled Sites With Closed Operations EnvironmentalRemediationObligationForOwnedOrControlledSitesWithClosedOperations	1000000	USD
CY2017Q4	ati	Environmental Remediation Obligations For Ongoing Operations EnvironmentalRemediationObligationsForOngoingOperations	1000000	USD
CY2016Q1	ati	Income Taxes Above Below Normal IncomeTaxesAboveBelowNormal	12000000	USD
CY2016Q2	ati	Income Taxes Above Below Normal IncomeTaxesAboveBelowNormal	-11400000	USD
CY2016Q4	ati	Income Taxes Above Below Normal IncomeTaxesAboveBelowNormal	-32400000	USD
CY2017	ati	Increase Decreasein Employee Benefit Liabilities IncreaseDecreaseinEmployeeBenefitLiabilities	-3700000	USD
CY2015	ati	Interest Expense Net InterestExpenseNet	110200000	USD
CY2016	ati	Interest Expense Net InterestExpenseNet	124000000	USD
CY2017	ati	Interest Expense Net InterestExpenseNet	133800000	USD
CY2015	ati	Inventory Net Realizable Value Reserve Period Charge InventoryNetRealizableValueReservePeriodCharge	131500000	USD
CY2016	ati	Inventory Net Realizable Value Reserve Period Charge InventoryNetRealizableValueReservePeriodCharge	-39900000	USD
CY2017	ati	Inventory Net Realizable Value Reserve Period Charge InventoryNetRealizableValueReservePeriodCharge	-54000000	USD
CY2015	ati	Lifo Provision Benefitand Changein Debit Lifonr Vreservenet LifoProvisionBenefitandChangeinDebitLIFONRVreservenet	-100000	USD
CY2016	ati	Lifo Provision Benefitand Changein Debit Lifonr Vreservenet LifoProvisionBenefitandChangeinDebitLIFONRVreservenet	-800000	USD
CY2017	ati	Lifo Provision Benefitand Changein Debit Lifonr Vreservenet LifoProvisionBenefitandChangeinDebitLIFONRVreservenet	200000	USD
CY2017	ati	Maximum Amount Of Time Hedged For Nickel Requirements MaximumAmountOfTimeHedgedForNickelRequirements	2021
CY2015	ati	Netreceiptspaymentsonintercompanyactivity Netreceiptspaymentsonintercompanyactivity	0	USD
CY2016	ati	Netreceiptspaymentsonintercompanyactivity Netreceiptspaymentsonintercompanyactivity	0	USD
CY2017	ati	Netreceiptspaymentsonintercompanyactivity Netreceiptspaymentsonintercompanyactivity	0	USD
CY2015	ati	Numberof Yearsin Cumulative Loss Profit Position NumberofYearsinCumulativeLossProfitPosition	3	year
CY2015	ati	Other Comprehensive Income Lossbefore Reclassifications Netof Tax Attributableto Noncontrolling Interest OtherComprehensiveIncomeLossbeforeReclassificationsNetofTaxAttributabletoNoncontrollingInterest	-5600000	USD
CY2016	ati	Other Comprehensive Income Lossbefore Reclassifications Netof Tax Attributableto Noncontrolling Interest OtherComprehensiveIncomeLossbeforeReclassificationsNetofTaxAttributabletoNoncontrollingInterest	-9700000	USD
CY2017	ati	Other Comprehensive Income Lossbefore Reclassifications Netof Tax Attributableto Noncontrolling Interest OtherComprehensiveIncomeLossbeforeReclassificationsNetofTaxAttributabletoNoncontrollingInterest	7600000	USD
CY2015	ati	Other Expense OtherExpense	22100000	USD
CY2016	ati	Other Expense OtherExpense	34600000	USD
CY2017	ati	Other Expense OtherExpense	34000000	USD
CY2015	ati	Other Other Nonoperating Income Expense OtherOtherNonoperatingIncomeExpense	-400000	USD
CY2016	ati	Other Other Nonoperating Income Expense OtherOtherNonoperatingIncomeExpense	0	USD
CY2017	ati	Other Other Nonoperating Income Expense OtherOtherNonoperatingIncomeExpense	0	USD
CY2017	ati	Percentage Of Raw Material Usage Hedged PercentageOfRawMaterialUsageHedged	0.20
CY2015	ati	Proceeds Paymentsfrom Intercompany Activites Investing Activities ProceedsPaymentsfromIntercompanyActivitesInvestingActivities	0	USD
CY2016	ati	Proceeds Paymentsfrom Intercompany Activites Investing Activities ProceedsPaymentsfromIntercompanyActivitesInvestingActivities	0	USD
CY2017	ati	Proceeds Paymentsfrom Intercompany Activites Investing Activities ProceedsPaymentsfromIntercompanyActivitesInvestingActivities	0	USD
CY2017	ati	Projected Retirement Benefit Expense In Next Year ProjectedRetirementBenefitExpenseInNextYear	52000000	USD
CY2015	ati	Reclassificationfrom Accumulated Other Comprehensive Income Current Period Netof Tax Attributableto Noncontrolling Interest ReclassificationfromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetofTaxAttributabletoNoncontrollingInterest	0	USD
CY2016	ati	Reclassificationfrom Accumulated Other Comprehensive Income Current Period Netof Tax Attributableto Noncontrolling Interest ReclassificationfromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetofTaxAttributabletoNoncontrollingInterest	0	USD
CY2017	ati	Reclassificationfrom Accumulated Other Comprehensive Income Current Period Netof Tax Attributableto Noncontrolling Interest ReclassificationfromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetofTaxAttributabletoNoncontrollingInterest	0	USD
CY2015	ati	Rent Royaltyand Other Income RentRoyaltyandOtherIncome	2000000	USD
CY2017	ati	Rent Royaltyand Other Income RentRoyaltyandOtherIncome	3500000	USD
CY2016	ati	Rent Royaltyand Other Income RentRoyaltyandOtherIncome	1400000	USD
CY2015	ati	Segment Operating Profit Loss SegmentOperatingProfitLoss	-84800000	USD
CY2016	ati	Segment Operating Profit Loss SegmentOperatingProfitLoss	5700000	USD
CY2017	ati	Segment Operating Profit Loss SegmentOperatingProfitLoss	283400000	USD
CY2015	ati	Restructuringandothercharges Restructuringandothercharges	89700000	USD
CY2016	ati	Restructuringandothercharges Restructuringandothercharges	538500000	USD
CY2017	ati	Restructuringandothercharges Restructuringandothercharges	0	USD
CY2017	ati	Tax Cutsand Jobs Actof2017 Changein Tax Rate Deferred Tax Asset Valuation Allowance Increase Decrease TaxCutsandJobsActof2017ChangeinTaxRateDeferredTaxAssetValuationAllowanceIncreaseDecrease	1500000	USD
CY2017	ati	Tax Cutsand Jobs Actof2017 Changein Tax Rate Deferred Tax Liability Income Tax Expense Benefit TaxCutsandJobsActof2017ChangeinTaxRateDeferredTaxLiabilityIncomeTaxExpenseBenefit	2600000	USD
CY2017	ati	Retained Earnings Equity Method Undistributed Earnings RetainedEarningsEquityMethodUndistributedEarnings	10000000	USD
CY2015	ati	Revenue From International Sales RevenueFromInternationalSales	1577000000	USD
CY2016	ati	Revenue From International Sales RevenueFromInternationalSales	1277100000	USD
CY2017	ati	Revenue From International Sales RevenueFromInternationalSales	1454500000	USD
CY2015	ati	Segment Corporate Expenses Closed Companies Environmental Costs SegmentCorporateExpensesClosedCompaniesEnvironmentalCosts	4500000	USD
CY2016	ati	Segment Corporate Expenses Closed Companies Environmental Costs SegmentCorporateExpensesClosedCompaniesEnvironmentalCosts	5800000	USD
CY2017	ati	Segment Corporate Expenses Closed Companies Environmental Costs SegmentCorporateExpensesClosedCompaniesEnvironmentalCosts	2900000	USD
CY2015	ati	Segment Corporate Expenses Other SegmentCorporateExpensesOther	15300000	USD
CY2016	ati	Segment Corporate Expenses Other SegmentCorporateExpensesOther	23800000	USD
CY2017	ati	Segment Corporate Expenses Other SegmentCorporateExpensesOther	22700000	USD
CY2017	ati	Tax Cutsand Jobs Actof2017 Mandatory Repatriationof Foreign Earnings Income TaxCutsandJobsActof2017MandatoryRepatriationofForeignEarningsIncome	100000000	USD
CY2016Q4	ati	Total Debt TotalDebt	1877000000	USD
CY2017Q4	ati	Total Debt TotalDebt	1540700000	USD
CY2017Q4	ati	Unrecognized Tax Benefits Reductionof Operating Loss Carryforwards UnrecognizedTaxBenefitsReductionofOperatingLossCarryforwards	11700000	USD
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0001018963
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	125661001	shares
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	8600	employee
CY2017Q2	dei	Entity Public Float EntityPublicFloat	1900000000	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	ALLEGHENY TECHNOLOGIES INCORPORATED
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	294300000	USD
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	420100000	USD
CY2016Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	452100000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	545300000	USD
CY2016Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	1500000	USD
CY2017Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	1200000	USD
CY2017Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	12000000	USD
CY2017Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	7000000	USD
CY2016Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	827900000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1978100000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7300000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	5900000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000000	USD
CY2016Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	309300000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	282400000	USD
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1859300000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-931400000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1014500000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1093700000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1027800000	USD
CY2016Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1188800000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1596300000	USD
CY2015	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	800000	shares
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	13100000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	20800000	shares
CY2015Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	25000000	USD
CY2016Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	23300000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	23500000	USD
CY2016	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	700000	USD
CY2017	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	800000	USD
CY2016	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	2000000	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	700000	USD
CY2016	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-400000	USD
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	100000	USD
CY2015Q4	us-gaap	Assets Assets	5751700000	USD
CY2016Q4	us-gaap	Assets Assets	5170000000	USD
CY2017Q4	us-gaap	Assets Assets	5185400000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	1766500000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	1915700000	USD
CY2016Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	829600000	USD
CY2017Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	844500000	USD
CY2016Q4	us-gaap	Cash Cash	164100000	USD
CY2017Q4	us-gaap	Cash Cash	140200000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	269500000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	149800000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	229600000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	141600000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-119700000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	79800000	USD
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CY2017	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-7600000	USD
CY2015	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.62
CY2016	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.24
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	109695171	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	126695171	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	108925254	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	125857197	shares
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	11000000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	12700000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-461000000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-720100000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-26000000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6400000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	4100000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	19800000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-454600000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-716000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-6200000	USD
CY2016Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	87400000	USD
CY2017Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	90700000	USD
CY2015	us-gaap	Cost Of Goods Sold CostOfGoodsSold	3659300000	USD
CY2016	us-gaap	Cost Of Goods Sold CostOfGoodsSold	2972100000	USD
CY2017	us-gaap	Cost Of Goods Sold CostOfGoodsSold	3076100000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-60700000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	500000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-800000	USD
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9400000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	14400000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6200000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-51700000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	13400000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4100000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-400000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1500000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1300000	USD
CY2016Q4	us-gaap	Debt Current DebtCurrent	105100000	USD
CY2017Q4	us-gaap	Debt Current DebtCurrent	10100000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-90900000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-115800000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2400000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	17100000	USD
CY2017Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	13100000	USD
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	100000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1000000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1100000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-60400000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-120300000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10900000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	734200000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	471000000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	15600000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	9700000	USD
CY2015	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-118000000	USD
CY2016	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-119800000	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-1400000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	30400000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3500000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-14400000	USD
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CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	742900000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	730600000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	468900000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	407800000	USD
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CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	107400000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	55900000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	56700000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	92600000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	25700000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	13800000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	294900000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	158000000	USD
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CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	291400000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	274000000	USD
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CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2100000	USD
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CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	38700000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	43900000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	7000000	USD
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CY2017Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	697000000	USD
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CY2017Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	-76500000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Prior Service Cost Credit Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear	-2500000	USD
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CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	34500000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	35500000	USD
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CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	170300000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	160800000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	9100000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	16500000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	18700000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	5500000	USD
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CY2016Q4	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
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CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	53700000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	10000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	10000000	USD
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CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	10000000	USD
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CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-7300000	USD
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CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	500000	USD
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CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-37000000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	641900000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	531400000	USD
CY2016Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	126600000	USD
CY2017Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	241000000	USD
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CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	114400000	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	114400000	USD
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CY2017	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	-110500000	USD
CY2015	us-gaap	Gross Profit GrossProfit	60300000	USD
CY2016Q1	us-gaap	Gross Profit GrossProfit	-33200000	USD
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CY2016Q3	us-gaap	Gross Profit GrossProfit	50200000	USD
CY2016Q4	us-gaap	Gross Profit GrossProfit	97300000	USD
CY2016	us-gaap	Gross Profit GrossProfit	162500000	USD
CY2017Q1	us-gaap	Gross Profit GrossProfit	112800000	USD
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CY2017Q3	us-gaap	Gross Profit GrossProfit	93300000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	130600000	USD
CY2017	us-gaap	Gross Profit GrossProfit	449000000	USD
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CY2016	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-640900000	USD
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CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-534600000	USD
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CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-119800000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-478000000	USD
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CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-86500000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	56600000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	48100000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	33300000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-3.53
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CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-112100000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-106900000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-6800000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	74500000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	171500000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-14500000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2017Q4	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-4100000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-4100000	USD
CY2015	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-11200000	USD
CY2016	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-5300000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-7200000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-167300000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-256900000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-30300000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	36600000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	4500000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	5100000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1100000	USD
CY2015	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-5400000	USD
CY2016	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	3400000	USD
CY2017	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-5200000	USD
CY2015	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	13400000	USD
CY2016	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	2100000	USD
CY2017	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	14200000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-20600000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-26800000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	0	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	10800000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	8600000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	10400000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-211300000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2015	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	14300000	USD
CY2016	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-80000000	USD
CY2017	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-110300000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-52500000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1900000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3300000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-51200000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	125800000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-203300000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	51800000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	93200000	USD
CY2015	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	55800000	USD
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	9300000	USD
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-1900000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-201200000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-234700000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	139200000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	19000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-600000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-10100000	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2015	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2200000	USD
CY2016	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	4700000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2600000	USD
CY2015	us-gaap	Interest Expense Debt InterestExpenseDebt	111400000	USD
CY2016	us-gaap	Interest Expense Debt InterestExpenseDebt	125400000	USD
CY2017	us-gaap	Interest Expense Debt InterestExpenseDebt	134900000	USD
CY2015	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2016	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2017	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2015	us-gaap	Interest Paid InterestPaid	113400000	USD
CY2016	us-gaap	Interest Paid InterestPaid	127200000	USD
CY2017	us-gaap	Interest Paid InterestPaid	133800000	USD
CY2016Q4	us-gaap	Interest Payable Current InterestPayableCurrent	40400000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	36200000	USD
CY2016Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	161700000	USD
CY2017Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	165000000	USD
CY2016Q4	us-gaap	Inventory Gross InventoryGross	1149200000	USD
CY2017Q4	us-gaap	Inventory Gross InventoryGross	1283300000	USD
CY2016Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	-97300000	USD
CY2017Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	-43100000	USD
CY2015	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	-131600000	USD
CY2016	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	39100000	USD
CY2017	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	54200000	USD
CY2016Q4	us-gaap	Inventory Net InventoryNet	1037000000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	1176100000	USD
CY2016Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	149600000	USD
CY2017Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	162800000	USD
CY2016Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	169000000	USD
CY2017Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	121500000	USD
CY2016Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	837900000	USD
CY2017Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	955500000	USD
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	1200000	USD
CY2016	us-gaap	Investment Income Interest InvestmentIncomeInterest	1400000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	1100000	USD
CY2016Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	736300000	USD
CY2017Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	821200000	USD
CY2016Q4	us-gaap	Land Land	31400000	USD
CY2017Q4	us-gaap	Land Land	31700000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	23100000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	22600000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	21100000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	3725200000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	3340900000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5170000000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5185400000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	708700000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	712600000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1771900000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1530600000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	10100000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	387700000.0	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	500500000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1100000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	4500000	USD
CY2017Q4	us-gaap	Loss Contingency Range Of Possible Loss Portion Not Accrued LossContingencyRangeOfPossibleLossPortionNotAccrued	15000000	USD
CY2016Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	3497200000	USD
CY2017Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	3597600000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	89600000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	105100000	USD
CY2015	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	16000000	USD
CY2016	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	16000000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-119600000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	131400000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-43700000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	22400000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	-377900000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	-101200000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	-18800000	USD
CY2016	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	100000	USD
CY2016Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	65500000	USD
CY2017Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	1400000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-106000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	323500000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9200000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-145100000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-200000000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	-530800000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	9900000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-640900000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	17500000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	10100000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	-121200000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	1700000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-91900000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12000000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	13800000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12200000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-378200000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-640900000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-91900000	USD
CY2017	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	3700000	USD
CY2016Q4	us-gaap	Notes Payable Related Parties Classified Current NotesPayableRelatedPartiesClassifiedCurrent	0	USD
CY2017Q4	us-gaap	Notes Payable Related Parties Classified Current NotesPayableRelatedPartiesClassifiedCurrent	0	USD
CY2016Q4	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	0	USD
CY2017Q4	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	0	USD
CY2016Q4	us-gaap	Notes Receivable Related Parties Current NotesReceivableRelatedPartiesCurrent	0	USD
CY2017Q4	us-gaap	Notes Receivable Related Parties Current NotesReceivableRelatedPartiesCurrent	0	USD
CY2016Q4	us-gaap	Notes Receivable Related Parties Noncurrent NotesReceivableRelatedPartiesNoncurrent	0	USD
CY2017Q4	us-gaap	Notes Receivable Related Parties Noncurrent NotesReceivableRelatedPartiesNoncurrent	0	USD
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	-369400000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	-612400000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	80300000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	20000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	6200000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	11300000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	6200000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	12500000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	13500000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	13900000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	47800000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	52700000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	262700000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	242600000	USD
CY2015	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-37000000	USD
CY2016	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-47100000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	39100000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-400000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-1600000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-121700000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-130400000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	10100000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-32000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	19600000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	7100000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-19500000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	9500000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-37000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-47100000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	39100000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	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	0	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	0	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-88700000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-88900000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	73500000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-5600000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-9700000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	7600000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-83100000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-79200000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	65900000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	19700000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	61400000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-27300000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-95800000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-92100000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-42700000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-5100000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-43900000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	18200000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-7900000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	7200000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-75000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-75000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-71600000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-33300000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	21200000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	14300000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	83400000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	73200000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1600000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2400000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4000000	USD
CY2016Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	317700000	USD
CY2017Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	317800000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	100000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2200000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3100000	USD
CY2015	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	1400000	USD
CY2016	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	0	USD
CY2017	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	4800000	USD
CY2016	us-gaap	Payments For Restructuring PaymentsForRestructuring	23800000	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	28800000	USD
CY2015	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2016	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2017	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	35800000	USD
CY2015	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	10400000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	800000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	66500000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	25800000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
CY2015	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	16000000	USD
CY2016	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	16000000	USD
CY2017	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	8000000	USD
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	500000	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	0	USD
CY2015	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	144500000	USD
CY2016	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	202200000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	122700000	USD
CY2015	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2016	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	12200000	USD
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2016Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2016Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2016Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2015	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	63300000	USD
CY2016	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	10500000	USD
CY2017	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	7100000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	397800000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	387500000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	8500000	USD
CY2015	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2016	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	3700000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	100000	USD
CY2015	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	1500000	USD
CY2016	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	3100000	USD
CY2017	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	1600000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	-365900000	USD
CY2016Q1	us-gaap	Profit Loss ProfitLoss	-98100000	USD
CY2016Q2	us-gaap	Profit Loss ProfitLoss	-15500000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	-527200000	USD
CY2016Q4	us-gaap	Profit Loss ProfitLoss	13700000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	-627100000	USD
CY2017Q1	us-gaap	Profit Loss ProfitLoss	21100000	USD
CY2017Q2	us-gaap	Profit Loss ProfitLoss	13400000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	-119400000	USD
CY2017Q4	us-gaap	Profit Loss ProfitLoss	5200000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-79700000	USD
CY2016Q4	us-gaap	Progress Payments Netted Against Inventory For Long Term Contracts Or Programs ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms	40500000	USD
CY2017Q4	us-gaap	Progress Payments Netted Against Inventory For Long Term Contracts Or Programs ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms	28800000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4358200000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4473800000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2498900000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2495700000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-38600000	USD
CY2016	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-51200000	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-55800000	USD
CY2015Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	12100000	USD
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	0	USD
CY2015	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	23600000	USD
CY2016	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2700000	USD
CY2017	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	353000000	USD
CY2015	us-gaap	Research And Development Arrangement Contract To Perform For Others Costs Incurred Gross ResearchAndDevelopmentArrangementContractToPerformForOthersCostsIncurredGross	1500000	USD
CY2016	us-gaap	Research And Development Arrangement Contract To Perform For Others Costs Incurred Gross ResearchAndDevelopmentArrangementContractToPerformForOthersCostsIncurredGross	2200000	USD
CY2017	us-gaap	Research And Development Arrangement Contract To Perform For Others Costs Incurred Gross ResearchAndDevelopmentArrangementContractToPerformForOthersCostsIncurredGross	1400000	USD
CY2015	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14200000	USD
CY2016	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14700000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	13300000	USD
CY2016	us-gaap	Restructuring Charges RestructuringCharges	48800000	USD
CY2015	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	54500000	USD
CY2016	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	471300000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	0	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1277100000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1184300000	USD
CY2015	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	3719600000	USD
CY2017	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	0	USD
CY2015Q4	us-gaap	Restructuring Reserve RestructuringReserve	8100000	USD
CY2016Q4	us-gaap	Restructuring Reserve RestructuringReserve	33100000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	1600000	USD
CY2017	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-2700000	USD
CY2015	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	64300000	USD
CY2016	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	527200000	USD
CY2016Q1	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	757500000	USD
CY2016Q2	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	810500000	USD
CY2016Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	770500000	USD
CY2016Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	796100000	USD
CY2016	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	3134600000	USD
CY2017Q1	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	865900000	USD
CY2017Q2	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	880200000	USD
CY2017Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	869100000	USD
CY2017Q4	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	909900000	USD
CY2017	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	3525100000	USD
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	238800000	USD
CY2016	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	247700000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	254300000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	370000	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	328000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	270000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	10800000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	9600000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	7700000
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	669000	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	682000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	378000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	20800000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	8400000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7100000
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1376000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1652000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1852000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1320000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	47800000
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	57000000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	51500000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	32500000
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	23000	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	154000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	640000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	800000
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	4300000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	18400000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	5600000	shares
CY2017Q4	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	24.00
CY2017Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	1000000	USD
CY2017Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	17000000	shares
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	397800000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1355200000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1739400000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2709300000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2184400000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1444800000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1844500000	USD
CY2015	us-gaap	Temporary Equity Issue Period Increase Or Decrease TemporaryEquityIssuePeriodIncreaseOrDecrease	0	USD
CY2015	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	-300000	USD
CY2016	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	0	USD
CY2017	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	0	USD
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	769917	shares
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	837974	shares
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	28000000	USD
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	26100000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	76800000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	19600000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22700000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14700000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	200000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	700000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	62100000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	4200000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	7600000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	3600000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	3200000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1300000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	600000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	700000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4300000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	7900000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	500000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1100000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	400000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	6000000	USD
CY2017Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	62800000	USD
CY2016Q3	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-173100000	USD
CY2016Q4	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	22500000	USD
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	107300000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	107300000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110100000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	107300000	shares
CY2016Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	109000000	shares
CY2016Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108900000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108900000	shares
CY2016Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108900000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	107300000	shares
CY2017Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108800000	shares
CY2017Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108900000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	108900000	shares
CY2017Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	118600000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	110100000	shares
CY2017	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	1200000	USD
CY2017	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company markets its products to a diverse customer base, principally throughout the United States. No single customer accounted for more than 10% of sales for any year presented. The principal end markets for the ATI’s products are customers in the aerospace & defense, oil & gas, electrical energy, automotive, construction and mining, food equipment and appliances, and medical markets.</font></div></div>
CY2017	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Pending Accounting Pronouncements</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In February 2018, the FASB issued limited changes to accounting standards to address the income tax accounting for certain provisions of the Tax Cuts and Jobs Act (the “Tax Act”).  Accounting standards require the effect of a change in tax laws or rates on deferred tax assets and liabilities to be included in income from continuing operations in the reporting period that the change was enacted, including tax effects that were initially recognized directly in other comprehensive income at the previous rate. This results in stranded amounts in accumulated other comprehensive income (AOCI) related to the income tax rate differential, as the net-of-tax AOCI balance is not adjusted for the tax rate change.  This new accounting guidance provides the option to make a one-time reclassification from AOCI to retained earnings for stranded tax effects resulting from the newly enacted U.S. federal tax rate under the Tax Act, calculated on the basis of the difference between the historical and newly enacted U.S. federal tax rate on deferred tax assets and liabilities related to items within AOCI.  Adoption of the new accounting guidance is not required, and the Company has elected not to adopt this new guidance.  </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In August 2017, the FASB issued changes to its accounting guidance for derivatives and hedging, which changes both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. Some changes resulting from this new guidance include the elimination of the concept of recognizing periodic hedge ineffectiveness for cash flow hedges, changes to the recognition and presentation of changes in the fair value of the hedging instrument, enhancement of the ability to use the critical-terms-match method for the cash flow hedge of groups of forecasted transactions when the timing of the hedged transactions does not perfectly match the hedging instrument’s maturity date, and the addition of new disclosure requirements and amendments to existing ones. This new guidance is effective for the Company’s 2019 fiscal year, with early adoption permitted and all transition requirements and elections being applied to hedging relationships existing on the date of adoption. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In March 2017, the FASB issued changes to the accounting for defined benefit pension and other postretirement benefit expenses. This new guidance requires the disaggregation of the service cost component from the other components of net benefit cost. The service cost component of net benefit cost is to be reported in the same line item on the consolidated statement of operations as other compensation costs arising from services rendered by the pertinent employees, while the other components of net benefit cost are to be presented in the consolidated statement of operations separately, outside a subtotal of operating income. The amendments also provide explicit guidance to allow only the service cost component of net benefit cost to be eligible for capitalization. This new guidance is effective for the Company’s 2018 fiscal year, with the adoption of the change in presentation of net benefit cost in the consolidated statement of operations to be applied retrospectively, and the change in capitalization for only service cost applied prospectively. The guidance allows a practical expedient that permits the use of the amounts disclosed in the retirement benefits footnote for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements. The Company will adopt this new guidance in the first quarter of fiscal year 2018 using this practical expedient. </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company expects such adoption to have a material impact to reported operating income in the consolidated statement of operations due to the change in presentation of non-service cost expense components. For example, applying the practical expedient to fiscal year 2017 results, operating income for 2017 would be </font><font style="font-family:inherit;font-size:10pt;">$54.3 million</font><font style="font-family:inherit;font-size:10pt;"> higher, with the reclassification of this amount representing the other components of net benefit cost to a newly-created non-operating retirement benefit expense category, with no net impact to the reported 2017 loss before income taxes. This statement of operations change in presentation of net benefit cost will not affect ATI’s measure of segment operating profit; all defined benefit pension and other postretirement benefit expense attributable to business segment operations remains a component of business segment financial performance. The Company expects to have a one-time, unfavorable impact of approximately </font><font style="font-family:inherit;font-size:10pt;">$6 million</font><font style="font-family:inherit;font-size:10pt;"> to pre-tax reported results in the first quarter of 2018 upon adoption primarily affecting the Flat Rolled Products business segment, due to the change limiting only the service cost component of net benefit cost to be capitalizable into inventory. </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In February 2016, the FASB issued new guidance on the accounting for leases. This new guidance will require that a lessee recognize assets and liabilities on the balance sheet for all leases with a lease term of more than twelve months, with the result being the recognition of a right of use asset and a lease liability. The new lease accounting requirements are effective for the Company’s 2019 fiscal year with a modified retrospective transition approach required, with early adoption permitted. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In May 2014, the FASB issued changes to revenue recognition with customers, which is required to be adopted by the Company in fiscal year 2018. This update provides a five-step analysis of transactions to determine when and how revenue is recognized, along with expanded disclosure requirements. An entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company will adopt this accounting standard update using the modified retrospective method, with the cumulative effect of initially applying this update recognized in the first reporting period of 2018. The Company has evaluated the impact of this standard on individual customer contracts and based on this evaluation determined that there are several customer agreements involving production of parts and components in the High Performance Materials and Components segment that require revenue to be recognized over time due to there being no alternative use for the product without significant economic loss and an enforceable right to payment including a normal profit margin from the customer in the event of contract termination. Over-time recognition is a change from current accounting, which is at a point-in-time for these products. As a result, the Company will recognize a </font><font style="font-family:inherit;font-size:10pt;">$15.5 million</font><font style="font-family:inherit;font-size:10pt;"> increase to retained earnings at the beginning of the 2018 fiscal year for the cumulative effect of applying the over-time revenue recognition to prior periods, representing the favorable impact to prior results had the over-time revenue recognition method been applied. Due to certain customer agreements with limited duration, 2018 gross profit is now expected to be lower by approximately </font><font style="font-family:inherit;font-size:10pt;">$5 million</font><font style="font-family:inherit;font-size:10pt;"> as a result of the cumulative effect adjustment for over-time recognition. There is no other significant impact to the Company upon adoption, with the exception of reclassifications to contract assets and liabilities on the consolidated balances sheet. As of January 1, 2018, total assets and total liabilities both increased by approximately </font><font style="font-family:inherit;font-size:10pt;">$33 million</font><font style="font-family:inherit;font-size:10pt;">, representing the reclassification of amounts recorded previously in accounts receivable and inventory to contract liabilities on the consolidated balance sheet. The Company also expects an increase to financial statement footnote disclosures in 2018 regarding revenues, contract assets and contract liabilities as a result of this accounting standard update.</font></div></div>
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Risks and Uncertainties and Use of Estimates</font></div><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of consolidated financial statements in conformity with United States generally accepted accounting principles requires management to make estimates and assumptions that affect reported amounts of assets and liabilities at the date of the financial statements, as well as the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates. Management believes that the estimates are reasonable. Certain prior year amounts have been reclassified in order to conform with the </font><font style="font-family:inherit;font-size:10pt;">2017</font><font style="font-family:inherit;font-size:10pt;"> presentation.</font></div><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"></font></div></div>

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$ATI
ATI INC Stock $ati

2017 Q4 Form 10-K Financial Statement

#000101896318000004 Filed on February 20, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ATI ATI INC Stock $ati

2017 Q4 Form 10-K Financial Statement

#000101896318000004 Filed on February 20, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ATI
ATI INC Stock $ati