Rendering

Component: (Network and Table)
Network
1082 - Disclosure - Pension and Other Postretirement Benefits - Net Periodic Pension and Other Postretirement Benefit Costs (Detail)
(http://www.ampcopittsburgh.com/taxonomy/role/DisclosurePensionAndOtherPostretirementBenefitsNetPeriodicPensionAndOtherPostretirementBenefitCosts)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000006176 (http://www.sec.gov/CIK)
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
U.S. Pension Benefits [Member]Foreign Pension Benefits [Member]Other Postretirement Benefits [Member]U.S. Pension Benefits [Member]Foreign Pension Benefits [Member]Other Postretirement Benefits [Member]U.S. Pension Benefits [Member]Foreign Pension Benefits [Member]Other Postretirement Benefits [Member]
Service cost
1,714,000  
314,000  
504,000  
2,743,000  
0  
384,000  
3,683,000  
0  
505,000  
Interest cost
9,977,000  
2,250,000  
722,000  
7,990,000  
2,394,000  
474,000  
8,762,000  
2,695,000  
688,000  
Expected return on plan assets
(13,424,000) 
(2,461,000) 
0  
(10,996,000) 
(2,681,000) 
0  
(10,747,000) 
(3,157,000) 
0  
Amortization of:
 
 
 
 
 
 
 
 
 
Prior service cost (credit)
44,000  
0  
(1,277,000) 
371,000  
0  
(672,000) 
854,000  
0  
(441,000) 
Actuarial loss
3,324,000  
670,000  
36,000  
5,440,000  
845,000  
26,000  
4,183,000  
599,000  
104,000  
Curtailment (gain) loss
(887,000) 
0  
0  
1,303,000  
0  
0  
0  
0  
0  
Net cost
748,000  
 
773,000  
 
(15,000) 
 
6,851,000  
 
558,000  
 
212,000  
 
6,735,000  
 
137,000  
 
856,000