XML 136 R122.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Selected Quarterly Financial Data (Unaudited) - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Restructuring costs |  |  |  |  |  |  | $ 48.8 |  |
Income taxes (above) below normal | $ (32.4) |  | $ (11.4) | $ 12.0 |  |  |  |  |
Federal tax rate |  |  |  |  |  |  | 35.00% |  |
NRV charge |  |  |  |  | $ 51.2 | $ 76.0 | $ (39.9) | $ 131.5 | $ (25.0)
NRV charge net of tax |  |  |  |  | 32.0 | 49.5 |  |  |
Deferred tax asset valuation allowance charge | (22.5) | $ 173.1 |  |  |  | $ 63.9 |  |  |
Impairment of goodwill |  |  |  |  |  |  | 0.0 | 126.6 | $ 0.0
Impairment of Long-Lived Assets Held-for-use, After Tax |  |  |  |  | 34.1 |  |  |  |
Flat Rolled Products [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Impairment of goodwill |  |  |  |  | 126.6 |  |  |  |
Impairment of goodwill net of tax |  |  |  |  | 79.2 |  |  |  |
High Performance Materials & Components and Corporate [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Severance and termination benefit costs |  |  |  |  | 6.3 |  |  |  |
Severance and termination benefit costs net of tax |  |  |  |  | 3.9 |  |  |  |
Employee Severance [Member] | Flat Rolled Products [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Restructuring costs |  |  |  | 9.0 |  |  |  |  |
Restructuring costs net of tax |  |  |  | 6.7 |  |  |  |  |
Work Stoppage and Return to Work [Member] | Flat Rolled Products [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Restructuring costs |  |  | 22.4 | 26.4 |  |  |  |  |
Restructuring costs net of tax |  |  | $ 8.4 | $ 19.7 |  |  |  |  |
Long-Lived Asset Impairment [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Restructuring costs |  | 471.3 |  |  |  |  |  |  |
Restructuring costs net of tax |  | 310.3 |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  |  |  |  |  | 54.5 |
Facility Closing [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Restructuring costs | 15.4 | 16.3 |  |  |  |  | 28.0 |  |
Restructuring costs net of tax | 10.0 | 10.7 |  |  | 2.2 |  |  |  |
Employee benefit costs [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Restructuring costs | 13.2 |  |  |  |  |  | 20.8 |  |
Restructuring costs net of tax | $ 8.6 |  |  |  |  |  |  |  |
Inventory Valuation Reserve [Member] | Titanium Sponge Inventory [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Inventory valuation charges |  | 11.3 |  |  |  |  | $ 11.3 |  |
Inventory valuation charges net of tax |  | $ 7.4 |  |  |  |  |  |  |
Inventory Valuation Reserve [Member] | Non-PQ grade titanium sponge [Member] |  |  |  |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Inventory valuation charges |  |  |  |  |  |  |  | $ 25.4 |
Inventory valuation charges net of tax |  |  |  |  | $ 15.9 |  |  |  |

X
- Definition Impairment of Long-Lived Assets Held-for-use, After Tax + References No definition available. + Details
Name: | ati_ImpairmentofLongLivedAssetsHeldforuseAfterTax
Namespace Prefix: | ati_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Income Taxes (Above) Below Normal + References No definition available. + Details
Name: | ati_IncomeTaxesAboveBelowNormal
Namespace Prefix: | ati_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Inventory, Net Realizable Value Reserve, Period Charge + References No definition available. + Details
Name: | ati_InventoryNetRealizableValueReservePeriodCharge
Namespace Prefix: | ati_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Inventory, Net Realizable Value Reserve, Period Charge, After Tax + References No definition available. + Details
Name: | ati_InventoryNetRealizableValueReservePeriodChargeAfterTax
Namespace Prefix: | ati_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Restructuring Charges, Net of Tax + References No definition available. + Details
Name: | ati_RestructuringChargesNetofTax
Namespace Prefix: | ati_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Severance Costs, After Tax + References No definition available. + Details
Name: | ati_SeveranceCostsAfterTax
Namespace Prefix: | ati_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Valuation Allowances and Reserves, Charged to Cost and Expense, After Tax + References No definition available. + Details
Name: | ati_ValuationAllowancesandReservesChargedtoCostandExpenseAfterTax
Namespace Prefix: | ati_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax of loss recognized that results from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References No definition available. + Details
Name: | us-gaap_GoodwillImpairmentLossNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
Name: | us-gaap_RestructuringCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 + Details
Name: | us-gaap_SeveranceCosts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_UnusualOrInfrequentItemLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=75116654&loc=d3e32123-109318 + Details
Name: | us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ati_FlatRolledProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ati_HighPerformanceMaterialsComponentsandCorporateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=ati_WorkStoppageandReturntoWorkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=ati_LongLivedAssetImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_FacilityClosingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=ati_EmployeebenefitcostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_InventoryValuationReserveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=ati_TitaniumSpongeInventoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=ati_NonPQgradetitaniumspongeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |