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Network
2415406 - Disclosure - Schedule of Deferred Tax Assets and Liabilities (Details)
(http://www.atimetals.com/role/ScheduleOfDeferredTaxAssetsAndLiabilitiesDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001018963 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-12-31
2015-12-31
Income Tax Disclosure [Abstract]
 
 
Components of Deferred Tax Assets and Liabilities [Abstract]
 
 
Deferred income tax assets
 
 
Pensions
281,200,000  
281,000,000  
Postretirement benefits other than pensions
122,900,000  
144,700,000  
Federal and state net operating loss tax carryovers
400,900,000  
228,100,000  
Federal and state tax credits
57,200,000  
52,200,000  
Deferred compensation and other benefit plans
25,700,000  
25,900,000  
Self insurance reserves
9,700,000  
10,800,000  
Other items
106,300,000  
85,200,000  
Gross deferred income tax assets
1,003,900,000  
 
827,900,000  
 
Valuation allowance for deferred tax assets
(322,200,000) 
(105,100,000) 
Total deferred income tax assets
681,700,000  
 
722,800,000  
 
Deferred income tax liabilities
 
 
Bases of property, plant and equipment
533,800,000  
664,100,000  
Inventory valuation
77,800,000  
62,200,000  
Bases of amortizable intangible assets
23,300,000  
25,400,000  
Other items
50,400,000  
46,700,000  
Total deferred tax liabilities
685,300,000  
 
798,400,000  
 
Net deferred tax liability
(3,600,000) 
 
(75,600,000)