$ATI
ATI INC Stock $ati

$ati Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-Q Financial Statement

#000162828021008044 Filed on April 29, 2021

Income Statement

Concept	2021 Q1	2020 Q1
Revenue	$692.5M	$955.5M
YoY Change	-27.52%	-4.91%
Cost Of Revenue	$606.7M	$820.7M
YoY Change	-26.08%	-6.07%
Gross Profit	$85.80M	$134.8M
YoY Change	-36.35%	2.82%
Gross Profit Margin	12.39%	14.11%
Selling, General & Admin	$54.00M	$58.40M
YoY Change	-7.53%	-14.12%
% of Gross Profit	62.94%	43.32%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$36.10M	$37.30M
YoY Change	-3.22%	-3.62%
% of Gross Profit	42.07%	27.67%
Operating Expenses	$54.00M	$58.40M
YoY Change	-7.53%	-14.12%
Operating Profit	$31.80M	$68.40M
YoY Change	-53.51%	8.4%
Interest Expense	-$23.40M	-$25.60M
YoY Change	-8.59%	3.23%
% of Operating Profit	-73.58%	-37.43%
Other Income/Expense, Net	$1.500M	-$900.0K
YoY Change	-266.67%	-68.97%
Pretax Income	$3.100M	$34.40M
YoY Change	-90.99%	101.17%
Income Tax	$5.500M	$10.80M
% Of Pretax Income	177.42%	31.4%
Net Earnings	-$7.900M	$21.10M
YoY Change	-137.44%	40.67%
Net Earnings / Revenue	-1.14%	2.21%
Basic Earnings Per Share	-$0.06	$0.17
Diluted Earnings Per Share	-$0.06	$0.16
COMMON SHARES
Basic Shares Outstanding	126.8M shares	126.1M shares
Diluted Shares Outstanding	126.8M shares	146.4M shares

Balance Sheet

Concept	2021 Q1	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$541.7M	$639.0M
YoY Change	-15.23%	194.47%
Cash & Equivalents	$541.7M	$639.0M
Short-Term Investments
Other Short-Term Assets	$38.00M	$51.00M
YoY Change	-25.49%	-44.98%
Inventory	$1.048B	$1.181B
Prepaid Expenses
Receivables	$423.9M	$593.4M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$2.093B	$2.508B
YoY Change	-16.53%	15.16%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.479B	$2.446B
YoY Change	-39.53%	-1.02%
Goodwill	$241.6M	$520.8M
YoY Change	-53.61%	-2.98%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$254.8M	$332.8M
YoY Change	-23.44%	8.9%
Total Long-Term Assets	$1.975B	$3.299B
YoY Change	-40.13%	-0.42%
TOTAL ASSETS
Total Short-Term Assets	$2.093B	$2.508B
Total Long-Term Assets	$1.975B	$3.299B
Total Assets	$4.069B	$5.807B
YoY Change	-29.94%	5.76%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$324.8M	$424.6M
YoY Change	-23.5%	-6.74%
Accrued Expenses	$230.0M	$209.6M
YoY Change	9.73%	-4.9%
Deferred Revenue	$118.7M	$114.3M
YoY Change	3.85%	46.73%
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$15.70M	$310.7M
YoY Change	-94.95%	4754.69%
Total Short-Term Liabilities	$689.2M	$1.059B
YoY Change	-34.93%	39.37%
LONG-TERM LIABILITIES
Long-Term Debt	$1.598B	$1.390B
YoY Change	14.99%	-9.52%
Other Long-Term Liabilities	$207.1M	$163.5M
YoY Change	26.67%	32.82%
Total Long-Term Liabilities	$207.1M	$163.5M
YoY Change	26.67%	32.82%
TOTAL LIABILITIES
Total Short-Term Liabilities	$689.2M	$1.059B
Total Long-Term Liabilities	$207.1M	$163.5M
Total Liabilities	$3.459B	$3.615B
YoY Change	-4.3%	4.94%
SHAREHOLDERS EQUITY
Retained Earnings	$103.0M	$1.700B
YoY Change	-93.94%	18.33%
Common Stock	$1.593B	$1.605B
YoY Change	-0.72%	-0.47%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.700M	$800.0K
YoY Change	487.5%	-95.94%
Treasury Stock Shares	226.7K shares	68.23K shares
Shareholders Equity	$482.9M	$2.088B
YoY Change
Total Liabilities & Shareholders Equity	$4.069B	$5.807B
YoY Change	-29.94%	5.76%

Cashflow Statement

Concept	2021 Q1	2020 Q1
OPERATING ACTIVITIES
Net Income	-$7.900M	$21.10M
YoY Change	-137.44%	40.67%
Depreciation, Depletion And Amortization	$36.10M	$37.30M
YoY Change	-3.22%	-3.62%
Cash From Operating Activities	-$68.10M	-$115.4M
YoY Change	-40.99%	-11.23%
INVESTING ACTIVITIES
Capital Expenditures	-$26.40M	-$29.10M
YoY Change	-9.28%	23.31%
Acquisitions
YoY Change
Other Investing Activities	$100.0K	-$1.000M
YoY Change	-110.0%	-1100.0%
Cash From Investing Activities	-$25.10M	-$25.20M
YoY Change	-0.4%	6.78%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$11.00M	$288.8M
YoY Change	-103.81%	-2633.33%
NET CHANGE
Cash From Operating Activities	-$68.10M	-$115.4M
Cash From Investing Activities	-$25.10M	-$25.20M
Cash From Financing Activities	-$11.00M	$288.8M
Net Change In Cash	-$104.2M	$148.2M
YoY Change	-170.31%	-189.82%
FREE CASH FLOW
Cash From Operating Activities	-$68.10M	-$115.4M
Capital Expenditures	-$26.40M	-$29.10M
Free Cash Flow	-$41.70M	-$86.30M
YoY Change	-51.68%	-18.89%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021Q1	dei	Amendment Flag AmendmentFlag	false
CY2021Q1	dei	Entity Central Index Key EntityCentralIndexKey	0001018963
CY2021Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2021Q1	dei	Document Type DocumentType	10-Q
CY2021Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2021Q1	dei	Document Period End Date DocumentPeriodEndDate	2021-03-31
CY2021Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2021Q1	dei	Entity File Number EntityFileNumber	1-12001
CY2021Q1	dei	Entity Registrant Name EntityRegistrantName	ALLEGHENY TECHNOLOGIES INCORPORATED
CY2021Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	25-1792394
CY2021Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	1000 Six PPG Place
CY2021Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Pittsburgh,
CY2021Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2021Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	15222-5479
CY2021Q1	dei	City Area Code CityAreaCode	412
CY2021Q1	dei	Local Phone Number LocalPhoneNumber	394-2800
CY2021Q1	dei	Security12b Title Security12bTitle	Common stock, par value $0.10
CY2021Q1	dei	Trading Symbol TradingSymbol	ATI
CY2021Q1	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2021Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q1	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	127203072	shares
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	541700000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	645900000	USD
CY2021Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	423900000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	345800000	USD
CY2021Q1	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	42000000.0	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	38900000	USD
CY2021Q1	us-gaap	Inventory Net InventoryNet	1047800000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	997100000	USD
CY2021Q1	us-gaap	Other Assets Current OtherAssetsCurrent	38000000.0	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	38300000	USD
CY2021Q1	us-gaap	Assets Current AssetsCurrent	2093400000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	2066000000.0	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1478700000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1469200000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	241600000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	240700000	USD
CY2021Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	254800000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	259000000.0	USD
CY2021Q1	us-gaap	Assets Assets	4068500000	USD
CY2020Q4	us-gaap	Assets Assets	4034900000	USD
CY2021Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	324800000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	290600000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	118700000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	111800000	USD
CY2021Q1	us-gaap	Debt Current DebtCurrent	15700000	USD
CY2020Q4	us-gaap	Debt Current DebtCurrent	17800000	USD
CY2021Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	230000000.0	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	233100000	USD
CY2021Q1	us-gaap	Liabilities Current LiabilitiesCurrent	689200000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	653300000	USD
CY2021Q1	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1598400000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1550000000.0	USD
CY2021Q1	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	321700000	USD
CY2020Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	326700000	USD
CY2021Q1	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	642800000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	673600000	USD
CY2021Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	207100000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	189900000	USD
CY2021Q1	us-gaap	Liabilities Liabilities	3459200000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	3393500000	USD
CY2021Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2021Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2021Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q1	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2021Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2021Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	127429740	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	126820440	shares
CY2021Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	127203072	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	126817768	shares
CY2021Q1	us-gaap	Common Stock Value CommonStockValue	12700000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	12700000	USD
CY2021Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1580500000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1625500000	USD
CY2021Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	103000000.0	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	106500000	USD
CY2021Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	226668	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	2672	shares
CY2021Q1	us-gaap	Treasury Stock Value TreasuryStockValue	4700000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1208600000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1223600000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	482900000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	521100000	USD
CY2021Q1	us-gaap	Minority Interest MinorityInterest	126400000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	120300000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	609300000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	641400000	USD
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4068500000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4034900000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	692500000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	955500000	USD
CY2021Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	606700000	USD
CY2020Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	820700000	USD
CY2021Q1	us-gaap	Gross Profit GrossProfit	85800000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	134800000	USD
CY2021Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	54000000.0	USD
CY2020Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	58400000	USD
CY2021Q1	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2020Q1	us-gaap	Restructuring Charges RestructuringCharges	8000000.0	USD
CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	31800000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	68400000	USD
CY2021Q1	ati	Nonoperatingretirementbenefitexpense Nonoperatingretirementbenefitexpense	6800000	USD
CY2020Q1	ati	Nonoperatingretirementbenefitexpense Nonoperatingretirementbenefitexpense	11200000	USD
CY2021Q1	ati	Interest Expense Net InterestExpenseNet	23400000	USD
CY2020Q1	ati	Interest Expense Net InterestExpenseNet	21900000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	-2400000	USD
CY2021Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1500000	USD
CY2020Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-900000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	3100000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	34400000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5500000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10800000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	23600000	USD
CY2021Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5500000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2500000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	-7900000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	21100000	USD
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.06
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.06
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2021Q1	us-gaap	Profit Loss ProfitLoss	-2400000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	23600000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4800000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-23400000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	400000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-12300000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	1700000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1800000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-2500000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-1300000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-8000000.0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-22200000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-21300000	USD
CY2021Q1	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	-500000	USD
CY2020Q1	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	-700000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-4900000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-21700000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-15700000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15600000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-15700000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	13200000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	7900000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6100000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1700000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	7100000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6200000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	-2400000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	23600000	USD
CY2021Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36100000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37300000	USD
CY2021Q1	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-400000	USD
CY2020Q1	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	8300000	USD
CY2021Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1200000	USD
CY2020Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	2500000	USD
CY2021Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	50800000	USD
CY2020Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	25800000	USD
CY2021Q1	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	78100000	USD
CY2020Q1	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	39200000	USD
CY2021Q1	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	34100000	USD
CY2020Q1	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-96500000	USD
CY2021Q1	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-16600000	USD
CY2020Q1	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-23000000.0	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-11200000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-2400000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-68100000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-115400000	USD
CY2021Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	26400000	USD
CY2020Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	29100000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1400000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2900000	USD
CY2021Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	100000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1000000.0	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-25100000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-25200000	USD
CY2021Q1	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	3000000.0	USD
CY2020Q1	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2000000.0	USD
CY2021Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-3300000	USD
CY2020Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	298600000	USD
CY2021Q1	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	4700000	USD
CY2020Q1	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	7800000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-11000000.0	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	288800000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-104200000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	148200000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	645900000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	490800000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	541700000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	639000000.0	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2193200000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	23600000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-15700000	USD
CY2020Q1	ati	Employee Stock Plans EmployeeStockPlans	8500000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2192600000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	641400000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	-2400000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15600000	USD
CY2021Q1	ati	Employee Stock Plans EmployeeStockPlans	-100000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	609300000	USD
CY2021Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2021Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	692500000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	955500000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	692500000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	955500000	USD
CY2021Q1	ati	Revenuefrom Contractwith Customer Excluding Assessed Tax Percentageof Revenue RevenuefromContractwithCustomerExcludingAssessedTaxPercentageofRevenue	1
CY2020Q1	ati	Revenuefrom Contractwith Customer Excluding Assessed Tax Percentageof Revenue RevenuefromContractwithCustomerExcludingAssessedTaxPercentageofRevenue	1
CY2021Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1500000000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2100000000	USD
CY2021Q1	ati	Revenue Remaining Performance Obligation Current RevenueRemainingPerformanceObligationCurrent	0.75	USD
CY2021Q1	ati	Accountsreceivablewithcustomers Accountsreceivablewithcustomers	428100000	USD
CY2020Q4	ati	Accountsreceivablewithcustomers Accountsreceivablewithcustomers	350100000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4300000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4600000	USD
CY2021Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	200000	USD
CY2020Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	100000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	300000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	300000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4200000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4400000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	38900000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	38500000	USD
CY2021Q1	ati	Contractwith Customer Asset Current Period Increase ContractwithCustomerAssetCurrentPeriodIncrease	25700000	USD
CY2020Q1	ati	Contractwith Customer Asset Current Period Increase ContractwithCustomerAssetCurrentPeriodIncrease	25100000	USD
CY2021Q1	ati	Contractwith Customer Asset Current Reclassifiedto Receivable ContractwithCustomerAssetCurrentReclassifiedtoReceivable	19100000	USD
CY2020Q1	ati	Contractwith Customer Asset Current Reclassifiedto Receivable ContractwithCustomerAssetCurrentReclassifiedtoReceivable	20200000	USD
CY2021Q1	ati	Contractwith Customer Asset Current Impairment ContractwithCustomerAssetCurrentImpairment	0	USD
CY2020Q1	ati	Contractwith Customer Asset Current Impairment ContractwithCustomerAssetCurrentImpairment	0	USD
CY2021Q1	ati	Contractwith Customer Asset Current Reclassification ContractwithCustomerAssetCurrentReclassification	3500000	USD
CY2020Q1	ati	Contractwith Customer Asset Current Reclassification ContractwithCustomerAssetCurrentReclassification	0	USD
CY2021Q1	ati	Contract With Customers Asset Current Divestiture ContractWithCustomersAssetCurrentDivestiture	0	USD
CY2020Q1	ati	Contract With Customers Asset Current Divestiture ContractWithCustomersAssetCurrentDivestiture	-100000	USD
CY2021Q1	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	42000000.0	USD
CY2020Q1	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	43500000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	0	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	100000	USD
CY2021Q1	ati	Contractwith Customer Asset Nocurrent Period Increase ContractwithCustomerAssetNocurrentPeriodIncrease	0	USD
CY2020Q1	ati	Contractwith Customer Asset Nocurrent Period Increase ContractwithCustomerAssetNocurrentPeriodIncrease	0	USD
CY2021Q1	ati	Contractwith Customer Asset Noncurrent Reclassifiedto Receivable ContractwithCustomerAssetNoncurrentReclassifiedtoReceivable	0	USD
CY2020Q1	ati	Contractwith Customer Asset Noncurrent Reclassifiedto Receivable ContractwithCustomerAssetNoncurrentReclassifiedtoReceivable	0	USD
CY2021Q1	ati	Contractwith Customer Asset Noncurrent Impairment ContractwithCustomerAssetNoncurrentImpairment	0	USD
CY2020Q1	ati	Contractwith Customer Asset Noncurrent Impairment ContractwithCustomerAssetNoncurrentImpairment	0	USD
CY2021Q1	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	118700000	USD
CY2020Q1	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	114300000	USD
CY2021Q1	ati	Contractwith Customer Asset Noncurrent Reclassification ContractwithCustomerAssetNoncurrentReclassification	0	USD
CY2020Q1	ati	Contractwith Customer Asset Noncurrent Reclassification ContractwithCustomerAssetNoncurrentReclassification	100000	USD
CY2021Q1	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	0	USD
CY2020Q1	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	0	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	111800000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	78700000	USD
CY2021Q1	ati	Contractwith Customer Liability Current Period Increase ContractwithCustomerLiabilityCurrentPeriodIncrease	57100000	USD
CY2020Q1	ati	Contractwith Customer Liability Current Period Increase ContractwithCustomerLiabilityCurrentPeriodIncrease	71700000	USD
CY2021Q1	ati	Contractwith Customer Liability Current Reclassifiedto Revenue ContractwithCustomerLiabilityCurrentReclassifiedtoRevenue	-43000000.0	USD
CY2020Q1	ati	Contractwith Customer Liability Current Reclassifiedto Revenue ContractwithCustomerLiabilityCurrentReclassifiedtoRevenue	-22100000	USD
CY2021Q1	ati	Contractwith Customer Liability Current Revenue Recognized ContractwithCustomerLiabilityCurrentRevenueRecognized	-4000000.0	USD
CY2020Q1	ati	Contractwith Customer Liability Current Revenue Recognized ContractwithCustomerLiabilityCurrentRevenueRecognized	-17100000	USD
CY2021Q1	ati	Contractwith Customer Liability Current Other ContractwithCustomerLiabilityCurrentOther	0	USD
CY2020Q1	ati	Contractwith Customer Liability Current Other ContractwithCustomerLiabilityCurrentOther	-300000	USD
CY2021Q1	ati	Contractwith Customer Liability Current Reclassification ContractwithCustomerLiabilityCurrentReclassification	3200000	USD
CY2020Q1	ati	Contractwith Customer Liability Current Reclassification ContractwithCustomerLiabilityCurrentReclassification	-3400000	USD
CY2020Q1	ati	Contractwith Customer Liability Noncurrent Period Increase ContractwithCustomerLiabilityNoncurrentPeriodIncrease	7400000	USD
CY2021Q1	ati	Contractwith Customer Liability Noncurrent Period Increase ContractwithCustomerLiabilityNoncurrentPeriodIncrease	24300000	USD
CY2021Q1	ati	Contractwith Customer Liability Noncurrent Revenue Recognized ContractwithCustomerLiabilityNoncurrentRevenueRecognized	0	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	32000000.0	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	25900000	USD
CY2021Q1	ati	Contractwith Customer Liability Noncurrent Reclassifiedto Revenue ContractwithCustomerLiabilityNoncurrentReclassifiedtoRevenue	-300000	USD
CY2020Q1	ati	Contractwith Customer Liability Noncurrent Reclassifiedto Revenue ContractwithCustomerLiabilityNoncurrentReclassifiedtoRevenue	-200000	USD
CY2020Q1	ati	Contractwith Customer Liability Noncurrent Revenue Recognized ContractwithCustomerLiabilityNoncurrentRevenueRecognized	0	USD
CY2021Q1	ati	Contractwith Customer Liability Noncurrent Other ContractwithCustomerLiabilityNoncurrentOther	0	USD
CY2020Q1	ati	Contractwith Customer Liability Noncurrent Other ContractwithCustomerLiabilityNoncurrentOther	0	USD
CY2021Q1	ati	Contractwith Customer Liability Noncurrent Reclassification ContractwithCustomerLiabilityNoncurrentReclassification	300000	USD
CY2020Q1	ati	Contractwith Customer Liability Noncurrent Reclassification ContractwithCustomerLiabilityNoncurrentReclassification	3400000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	55700000	USD
CY2020Q1	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	29700000	USD
CY2021Q1	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	5300000	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	5400000	USD
CY2021Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	200000	USD
CY2020Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	300000	USD
CY2021Q1	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	224100000	USD
CY2020Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	207600000	USD
CY2021Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	736000000.0	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	690700000	USD
CY2021Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	164000000.0	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	181600000	USD
CY2021Q1	us-gaap	Inventory Gross InventoryGross	1124100000	USD
CY2020Q4	us-gaap	Inventory Gross InventoryGross	1079900000	USD
CY2021Q1	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	-37300000	USD
CY2020Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	-44100000	USD
CY2021Q1	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	113600000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	997100000	USD
CY2020Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	126900000	USD
CY2021Q1	us-gaap	Inventory Net InventoryNet	1047800000	USD
CY2021Q1	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	6800000	USD
CY2020Q1	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	-12000000.0	USD
CY2021Q1	ati	Inventory Net Realizable Value Reserve Period Charge InventoryNetRealizableValueReservePeriodCharge	-6800000	USD
CY2020Q1	ati	Inventory Net Realizable Value Reserve Period Charge InventoryNetRealizableValueReservePeriodCharge	12000000.0	USD
CY2021Q1	ati	Lifo Provision Benefitand Changein Debit Lifonr Vreservenet LifoProvisionBenefitandChangeinDebitLIFONRVreservenet	0	USD
CY2020Q1	ati	Lifo Provision Benefitand Changein Debit Lifonr Vreservenet LifoProvisionBenefitandChangeinDebitLIFONRVreservenet	0	USD
CY2021Q1	us-gaap	Land Land	34800000	USD
CY2020Q4	us-gaap	Land Land	34800000	USD
CY2021Q1	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	569500000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	564700000	USD
CY2021Q1	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	2768400000	USD
CY2020Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	2736900000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3372700000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3336400000	USD
CY2021Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1894000000.0	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1867200000	USD
CY2020Q1	us-gaap	Gain Loss On Sale Of Property GainLossOnSaleOfProperty	2500000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1478700000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1469200000	USD
CY2021Q1	us-gaap	Construction In Progress Gross ConstructionInProgressGross	252600000	USD
CY2021Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	9200000	USD
CY2021Q1	ati	Rent Royalty And Other Income RentRoyaltyAndOtherIncome	300000	USD
CY2020Q1	ati	Rent Royalty And Other Income RentRoyaltyAndOtherIncome	300000	USD
CY2021Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1200000	USD
CY2020Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	2500000	USD
CY2021Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3700000	USD
CY2021Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1500000	USD
CY2020Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-900000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	43400000	USD
CY2021Q1	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2021Q1	us-gaap	Payments For Restructuring PaymentsForRestructuring	6500000	USD
CY2021Q1	us-gaap	Restructuring Reserve RestructuringReserve	36900000	USD
CY2021Q1	us-gaap	Restructuring Reserve RestructuringReserve	36900000	USD
CY2021Q1	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	15100000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	14500000	USD
CY2021Q1	ati	Total Debt TotalDebt	1614100000	USD
CY2020Q4	ati	Total Debt TotalDebt	1567800000	USD
CY2021Q1	us-gaap	Debt Current DebtCurrent	15700000	USD
CY2020Q4	us-gaap	Debt Current DebtCurrent	17800000	USD
CY2021Q1	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1598400000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1550000000.0	USD
CY2021Q1	ati	Debt Instrument Convertible Cap Price DebtInstrumentConvertibleCapPrice	19.76
CY2021Q1	ati	Percentage Of Raw Material Usage Hedged PercentageOfRawMaterialUsageHedged	0.10
CY2021Q1	ati	Percentage Of Forecasted Natural Gas Usage Hedgedfor Year1 PercentageOfForecastedNaturalGasUsageHedgedforYear1	0.75
CY2021Q1	ati	Percentage Of Forecasted Natural Gas Usage Hedgedfor Year2 PercentageOfForecastedNaturalGasUsageHedgedforYear2	0.25
CY2021Q1	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	700000	USD
CY2021Q1	ati	Corporate Expenses CorporateExpenses	12200000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5500000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10800000	USD
CY2020Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.314
CY2021Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2021Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2021Q1	ati	Segment Earnings Before Income Taxes Depreciation Amortization Ebitda SegmentEarningsBeforeIncomeTaxesDepreciationAmortizationEBITDA	74300000	USD
CY2020Q1	ati	Segment Earnings Before Income Taxes Depreciation Amortization Ebitda SegmentEarningsBeforeIncomeTaxesDepreciationAmortizationEBITDA	117700000	USD
CY2021Q1	ati	Lifo Provision Benefitand Changein Debit Lifonr Vreservenet LifoProvisionBenefitandChangeinDebitLIFONRVreservenet	0	USD
CY2020Q1	ati	Lifo Provision Benefitand Changein Debit Lifonr Vreservenet LifoProvisionBenefitandChangeinDebitLIFONRVreservenet	0	USD
CY2020Q1	ati	Corporate Expenses CorporateExpenses	12300000	USD
CY2021Q1	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-500000	USD
CY2020Q1	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	6300000	USD
CY2021Q1	ati	Adjusted Earnings Before Income Taxes Depreciation Amortization Ebitda AdjustedEarningsBeforeIncomeTaxesDepreciationAmortizationEBITDA	62600000	USD
CY2020Q1	ati	Adjusted Earnings Before Income Taxes Depreciation Amortization Ebitda AdjustedEarningsBeforeIncomeTaxesDepreciationAmortizationEBITDA	99100000	USD
CY2021Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36100000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37300000	USD
CY2021Q1	ati	Interest Expense Net InterestExpenseNet	23400000	USD
CY2020Q1	ati	Interest Expense Net InterestExpenseNet	21900000	USD
CY2021Q1	ati	Restructuringandothercharges Restructuringandothercharges	0	USD
CY2020Q1	ati	Restructuringandothercharges Restructuringandothercharges	8000000.0	USD
CY2021Q1	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	USD
CY2020Q1	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	2500000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3100000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	34400000	USD
CY2020Q1	us-gaap	Restructuring And Related Cost Expected Number Of Positions Eliminated RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated	90	position
CY2020Q1	us-gaap	Gain Loss On Sale Of Property GainLossOnSaleOfProperty	2500000	USD
CY2021Q1	ati	Entity Number Of Employees Covered By Usw Collective Bargaining Agreements That Expired February282021 EntityNumberOfEmployeesCoveredByUSWCollectiveBargainingAgreementsThatExpiredFebruary282021	1100	employee
CY2021Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-7900000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	21100000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-7900000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	23400000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	126800000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	126100000	shares
CY2021Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	400000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	126800000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146400000	shares
CY2021Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.06
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.17
CY2021Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.06
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.16
CY2021Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	25700000	shares
CY2020Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1223600000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-5100000	USD
CY2021Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-20100000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15000000.0	USD
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1208600000	USD
CY2020Q4	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	21200000	USD
CY2021Q1	ati	Other Comprehensive Income Loss Before Reclassification Adjustments Net Of Tax Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeReclassificationAdjustmentsNetOfTaxAttributableToNoncontrollingInterest	600000	USD
CY2021Q1	ati	Reclassificationfrom Accumulated Other Comprehensive Income Loss Current Period Netof Tax Attributableto Noncontrolling Interest ReclassificationfromAccumulatedOtherComprehensiveIncomeLossCurrentPeriodNetofTaxAttributabletoNoncontrollingInterest	0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	600000	USD
CY2021Q1	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	21800000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1201700000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-32000000.0	USD
CY2020Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-17100000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-14900000	USD
CY2020Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1216600000	USD
CY2019Q4	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	9800000	USD
CY2020Q1	ati	Other Comprehensive Income Loss Before Reclassification Adjustments Net Of Tax Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeReclassificationAdjustmentsNetOfTaxAttributableToNoncontrollingInterest	-800000	USD
CY2020Q1	ati	Reclassificationfrom Accumulated Other Comprehensive Income Loss Current Period Netof Tax Attributableto Noncontrolling Interest ReclassificationfromAccumulatedOtherComprehensiveIncomeLossCurrentPeriodNetofTaxAttributabletoNoncontrollingInterest	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-800000	USD
CY2020Q1	ati	Accumulated Other Comprehensive Income Loss Netof Tax Attributableto Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossNetofTaxAttributabletoNoncontrollingInterest	9000000.0	USD
CY2021Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	13000000	USD
CY2021Q1	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	4000000	USD
CY2021Q1	ati	Environmental Remediation Obligation Federal Superfund Sites EnvironmentalRemediationObligationFederalSuperfundSites	3000000	USD
CY2021Q1	ati	Environmental Remediation Obligation For Formerly Owned Sites EnvironmentalRemediationObligationForFormerlyOwnedSites	8000000	USD
CY2021Q1	ati	Environmental Remediation Obligation For Owned Or Controlled Sites With Closed Operations EnvironmentalRemediationObligationForOwnedOrControlledSitesWithClosedOperations	1000000	USD
CY2021Q1	ati	Environmental Remediation Obligation For Ongoing Operations EnvironmentalRemediationObligationForOngoingOperations	1000000	USD
CY2020Q1	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	2500000	USD
CY2021Q1	ati	Entity Number Of Employees Covered By Usw Collective Bargaining Agreements That Expired February282021 EntityNumberOfEmployeesCoveredByUSWCollectiveBargainingAgreementsThatExpiredFebruary282021	1100	employee
CY2021Q1	ati	Entity Number Of Employees Covered By Usw Collective Bargaining Agreements That Expired February282021 EntityNumberOfEmployeesCoveredByUSWCollectiveBargainingAgreementsThatExpiredFebruary282021	1100	employee
CY2021Q1	ati	Entity Number Of Employees Covered By Usw Collective Bargaining Agreements That Expired February282021 EntityNumberOfEmployeesCoveredByUSWCollectiveBargainingAgreementsThatExpiredFebruary282021	1100	employee

Files In Submission

Name	View Source	Status
0001628280-21-008044-index-headers.html	Edgar Link	pending
0001628280-21-008044-index.html	Edgar Link	pending
0001628280-21-008044.txt	Edgar Link	pending
0001628280-21-008044-xbrl.zip	Edgar Link	pending
ati-20210331.htm	Edgar Link	pending
ati-20210331.xsd	Edgar Link	pending
ati-20210331_cal.xml	Edgar Link	unprocessable
ati-20210331_def.xml	Edgar Link	unprocessable
ati-20210331_htm.xml	Edgar Link	completed
ati-20210331_lab.xml	Edgar Link	unprocessable
ati-20210331_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
fy2021q1exhibit311.htm	Edgar Link	pending
fy2021q1exhibit312.htm	Edgar Link	pending
fy2021q1exhibit321.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$ATI
ATI INC Stock $ati

2021 Q1 Form 10-Q Financial Statement

#000162828021008044 Filed on April 29, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ATI ATI INC Stock $ati

2021 Q1 Form 10-Q Financial Statement

#000162828021008044 Filed on April 29, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ATI
ATI INC Stock $ati