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Component: (Network and Table)
Network
2410410 - Disclosure - Employee Benefit Plans Expected Future Benefit Payments (Details)
(http://www.aleris.com/role/EmployeeBenefitPlansExpectedFutureBenefitPaymentsDetails)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001518587 (http://www.sec.gov/CIK)
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2016-12-31
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
United States Pension Plans of US Entity, Defined Benefit [Member]Foreign Pension Plans, Defined Benefit [Member]Gross Benefit Payment [Member]Defined Benefit Plan Payment Net of Medicare Part D Subsidy [Member]
2016
11,000,000  
4,000,000  
3,600,000  
3,400,000  
2017
10,900,000  
4,800,000  
3,500,000  
3,300,000  
2018
11,100,000  
4,600,000  
3,300,000  
3,100,000  
2019
11,500,000  
4,500,000  
3,100,000  
3,100,000  
2020
11,500,000  
4,900,000  
2,900,000  
2,900,000  
2021-2025
56,100,000  
26,100,000  
12,200,000  
12,200,000